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Sample records for hickory carya ovata

  1. Development of SSR Markers in Hickory (Carya cathayensis Sarg.) and Their Transferability to Other Species of Carya.

    Science.gov (United States)

    Li, Juan; Zeng, Yanru; Shen, Dengfeng; Xia, Guohua; Huang, Yinzhi; Huang, Youjun; Chang, Jun; Huang, Jianqin; Wang, Zhengjia

    2014-10-01

    Hickory (Carya cathayensis Sarg.), an important nut-producing species in Southeastern China, has high economic value, but so far there has been no cultivar bred under species although it is mostly propagated by seeding and some elite individuals have been found. It has been found recently that this species has a certain rate of apomixis and poor knowledge of its genetic background has influenced development of a feasible breeding strategy. Here in this paper we first release SSR (Simple sequence repeat) markers developed in this species and their transferability to other three species of the same genus, Carya. A total of 311 pairs of SSR primers in hickory were developed based on sequenced cDNAs of a fruit development-associated cDNA library and RNA-seq data of developing female floral buds and could be used to distinguish hickory, C. hunanensis Cheng et R. H. Chang ex R. H. Chang et Lu, C. illinoensis K. Koch (pecan) and C. dabieshanensis M. C. Liu et Z. J. Li, but they were monomorphic in both hickory and C. hunanensis although multi-alleles have been identified in all the four species. There is a transferability rate of 63.02% observed between hickory and pecan and the markers can be applied to study genetic diversity of accessions in pecan. When used in C. dabieshanensis, it was revealed that C. dabieshanensis had the number of alleles per locus ranging from 2 to 4, observed heterozygosity from 0 to 0.6667 and expected heterozygosity from 0.333 to 0.8667, respectively, which supports the existence of C. dabieshanensis as a separate species different from hickory and indicates that there is potential for selection and breeding in this species.

  2. Cloning and bioinformatics analysis of CcPILS gene of Hickory (Carya cathayensis)

    Science.gov (United States)

    Guo, Wenbin; Yuan, Huwei; Gao, Liuxiao; Guo, Haipeng; Qiu, Lingling; Xu, Dongbin; Yan, Daoliang; Zheng, Bingsong

    2017-04-01

    PILS is a key auxin efflux carrier protein in the auxin signal transduction. A CcPILS gene related to hickory (Carya carthayensis) grafting process was obtained by RACE techniques. The full length of CcPILS gene was1541bp contained a 1263bp length open reading flame (ORF). The CcPILS encoded 294 amino acids with molecular weight of 46 kDa, PI 5.38 and localized at endoplasmic reticulum membrane. The gene contained a central hydrophilic loop separating two hydrophobic domains of about five transmembrane regions each. The gene of CcPILS belonged to Clade III sub-family of PILS and its sequence had high homology with Arabidopsis. Real Time RT-PCR analysis showed that the gene expressions were weakly induced in bud, inflorescence, fruit, leaf and stem, while strongly in root. The expression levels were strongly induced and reached a peak at the third day of grafting in scion and rootstock of hickory, which were 1.45 and 3.45 times higher, respectively, compared to that of control. The results indicated that CcPILS may be involved in regulating the expression of genes related to auxin signal transduction during hickory graft process.

  3. Comparative Proteomic Analysis of the Graft Unions in Hickory (Carya cathayensis Provides Insights into Response Mechanisms to Grafting Process

    Directory of Open Access Journals (Sweden)

    Daoliang Yan

    2017-04-01

    Full Text Available Hickory (Carya cathayensis, a tree with high nutritional and economic value, is widely cultivated in China. Grafting greatly reduces the juvenile phase length and makes the large scale cultivation of hickory possible. To reveal the response mechanisms of this species to grafting, we employed a proteomics-based approach to identify differentially expressed proteins in the graft unions during the grafting process. Our study identified 3723 proteins, of which 2518 were quantified. A total of 710 differentially expressed proteins (DEPs were quantified and these were involved in various molecular functional and biological processes. Among these DEPs, 341 were up-regulated and 369 were down-regulated at 7 days after grafting compared with the control. Four auxin-related proteins were down-regulated, which was in agreement with the transcription levels of their encoding genes. The Kyoto Encyclopedia of Genes and Genomes (KEGG analysis showed that the ‘Flavonoid biosynthesis’ pathway and ‘starch and sucrose metabolism’ were both significantly up-regulated. Interestingly, five flavonoid biosynthesis-related proteins, a flavanone 3-hyfroxylase, a cinnamate 4-hydroxylase, a dihydroflavonol-4-reductase, a chalcone synthase, and a chalcone isomerase, were significantly up-regulated. Further experiments verified a significant increase in the total flavonoid contents in scions, which suggests that graft union formation may activate flavonoid biosynthesis to increase the content of a series of downstream secondary metabolites. This comprehensive analysis provides fundamental information on the candidate proteins and secondary metabolism pathways involved in the grafting process for hickory.

  4. Cottonwoods of the Midwest: A Community Profile

    Science.gov (United States)

    2008-05-01

    Bitternut hickory Carya cordiformis X X Pignut hickory Carya glabra X Pecan Carya illinoensis X Shellbark hickory Carya lacinios X Shagbark...rugosa X Pawpaw Asimina triloba X River birch Betula nigra X American hornbeam Carpinus caroliniana X Water hickory Carya aquatica X...hickory Carya ovata X Mockernut hickory Carya tomentosa X Sugarberry Celtis laevigata X Hackberry Celtis occidentalis X X Eastern redbud

  5. Characterization of the complete chloroplast genome of the endangered species Carya sinensis (Juglandaceae)

    Science.gov (United States)

    Yiheng Hu; Xi Chen; Xiaojia Feng; Keith E. Woeste; Peng Zhao

    2016-01-01

    Carya sinensis (Chinese Hickory, beaked walnut, or beaked hickory) is an endangered species that needs urgent conservation action. Here, we reported the complete chloroplast (cp) genome sequence and the genomic features of the C. sinensis cp, which is the first complete cp genome of any member of Carya. The...

  6. Hot-air drying characteristics and technical parameters optimization of kernel hickory (Carya cathayensis Sarg.)%山核桃坚果热风干燥特性及其工艺参数优化

    Institute of Scientific and Technical Information of China (English)

    朱德泉; 曹成茂; 丁正耀; 刘伟伟; 张念生; 王继先

    2011-01-01

    针对山核桃坚果热风干燥质量难以控制、干后品质差等问题,采用单因素试验方法,研究了热风温度、装载量及风速对山核桃坚果干燥特性的影响.通过3因素5水平的二次回归正交试验,分析了热风温度、装载量及风速与干燥过程单位时间干燥速率、单位质量干燥能耗以及干后物料蛋白质保存率、不饱和脂肪酸保存率、感官品质指标综合分值的关系,建立了二次同归数学模型,分析了3因素对各指标影响的显著性;利用多目标非线性优化方法,确定了山核桃坚果热风干燥的最佳工艺参数组合,即热风温度为72℃,装载量为0.08 kg,风速为65 m/min.在此条件下,单位时间干燥速率为0.458%/min、单位质量干燥能耗为5.986 kWh/kg、蛋白质保存率为92.12%、不饱和脂肪酸保存率为90.65%、感官品质指标综合分值为32.89分,综合评分为0.802.研究结果为山核桃坚果的干燥和工业化生产提供一定的理论依据.%According to the proplems of difficult control for hot-air drying process and poor quality of dried hickory kernels (Carya cathayensis Sarg.), the effects of drying temperature, material load and airflow rate on hot-air drying characteristics of kernels were investigated by the single factor experimental method. The quadratic regression orthogonal experimental method with three factors and five levels for each factor was employed. Drying temperature, material load and airflow rate were the influence factors, and dehydration rate, energy consumption of drying process, protein retention ratio, unsaturated fatty acid retention ratio and synthetic score of sensory quality indicator of dried kernels were the experimental indices. The relationships between the experimental indices and the influence factors were analyzed. The regression mathematical models describing the relations between the experimental indices and the influence factors were established to analyze the

  7. The Buffalo Creek Archaeological Project. Volume 1: Background and Testing at 3MS346 and 3CG847 Mississippi and Craighead Counties, Arkansas

    Science.gov (United States)

    1992-01-01

    shagbark hickory ( Carya ovata), and pecan ( Carya illinoensis ). These trees dominate the vegetation on well-drained elevated land such as tho-se areas...strongly acidic soil (Steyermark 1959:95, 120). Chinquapin (Castanea ozarkensis), black or sourgum (Nyssa sylvatica), black hickory ( Carya texana...white oak, mockernut hickory ( Carya tomentosa), black hickory, white hickory ( Carya alba), flowering dogwoo-T-,whiT𔃻eFash(Fraxinus americana

  8. Environmental Impact Research Program. Eastern Gray Squirrel (Sciurus carolinensis). Section 4.7.1, US Army Corps of Engineers Wildlife Resources Management Manual.

    Science.gov (United States)

    1986-07-01

    Palmetto Sabal spp. Pawpaw Asimina triloba Pecan Carya illinoensis Persimmon Diospyros virginiana Pine Pinus app. Loblolly pine P. taeda Red mulberry...grandifotia Bitter pecan Carya aquatica Blackberry Rubus app. Black cherry Prunus serotina Blackgum Nyssa sylvatica Black walnut Jugtans nigra Blueberry...americana Hickory Carya Spp. Bitternut hickory C. cordiformis Shagbark hickory C. ovata Shellbark hickory C. Zaciniosa Hophornbeam Ostrya virginiana

  9. Early Holocene pecan, Carya illinoensis, in the Mississippi River Valley near Muscatine, Iowa*1

    Science.gov (United States)

    Bettis, E. Arthur; Baker, Richard G.; Nations, Brenda K.; Benn, David W.

    1990-01-01

    A fossil pecan, Carya illinoensis (Wang.) K. Koch, from floodplain sediments of the Mississippi River near Muscatine, Iowa, was accelerator-dated at 7280 ± 120 yr B.P. This discovery indicates that pecan was at or near its present northern limit by that time. Carya pollen profiles from the Mississippi River Trench indicate that hickory pollen percentages were much higher in the valley than at upland locations during the early Holocene. Pecan, the hickory with the most restricted riparian habitat, is the likely candidate for producing these peaks in Carya pollen percentages. Therefore, pecan may have reached its northern limit as early as 10,300 yr B.P. Its abundance in Early Archaic archaeological sites and the co-occurrence of early Holocene Carya pollen peaks with the arrival of the Dalton artifact complex in the Upper Mississippi Valley suggest that humans may have played a role in the early dispersal of pecan.

  10. Early Holocene pecan, Carya illinoensis, in the Mississippi River Valley near Muscatine, Iowa

    Science.gov (United States)

    Bettis, E. Arthur; Baker, R.G.; Nations, B.K.; Benn, D.W.

    1990-01-01

    A fossil pecan, Carya illinoensis (Wang.) K. Koch, from floodplain sediments of the Mississippi River near Muscatine, Iowa, was accelerator-dated at 7280 ?? 120 yr B.P. This discovery indicates that pecan was at or near its present northern limit by that time. Carya pollen profiles from the Mississippi River Trench indicate that hickory pollen percentages were much higher in the valley than at upland locations during the early Holocene. Pecan, the hickory with the most restricted riparian habitat, is the likely candidate for producing these peaks in Carya pollen percentages. Therefore, pecan may have reached its northern limit as early as 10,300 yr B.P. Its abundance in Early Archaic archaeological sites and the co-occurrence of early Holocene Carya pollen peaks with the arrival of the Dalton artifact complex in the Upper Mississippi Valley suggest that humans may have played a role in the early dispersal of pecan. ?? 1990.

  11. Impacts of Flooding Regime Modification on Wildlife Habitats of Bottomland Hardwood Forests in the Lower Mississippi Valley.

    Science.gov (United States)

    1981-10-01

    styraciflua), shellbark hickory ( Carya laciniosa), and shagbark hickory (C. ovata) dominating in the control while American hornbeam and silver maple (Acer...Trees and Shrubs in the Lower Mississippi Valley (After Whitlow and Harris 1979) Common Name Scientific Name Very Tolerant* Water hickory Carya ...aquatica Pecan C. illinoensis Buttonbush Cephalanthus occidentalis Swamp privet Forestiera acuminata Green ash Fraxinus pennsylvanica Water locust Gleditsia

  12. After 25 years, what does the Pennsylvania Regeneration Study tell us about oak/hickory forests under stress?

    Science.gov (United States)

    William H. McWilliams; James A. Westfall; Patrick H. Brose; Shawn L. Lehman; Randall S. Morin; Todd E. Ristau; Alejandro A. Royo; Susan L. Stout

    2017-01-01

    The Pennsylvania Regeneration Study was initiated in 1989 because of concerns about a long history of stress on oak/hickory (Quercus/Carya) forests from herbivory and other factors. The study, which addresses the need for landscape-level information about regeneration quality and abundance, comprises a suite of regeneration indicator measurements...

  13. Evaluation of the antioxidant activity of Chinese Hickory (Carya ...

    African Journals Online (AJOL)

    STORAGESEVER

    2008-07-04

    Jul 4, 2008 ... therapeutic component and has been claimed to have ... the residue was then extracted with two additional portions (100 mL ..... Reactive Oxygen Species as Mediators of Signal. Transduction in Cardiovascular Disease.

  14. Prehistory of the Little Blue River Valley, Western Missouri: Archaeological Investigations at Blue Springs Lake.

    Science.gov (United States)

    1989-01-01

    Components Carya cordiformis, bitternut hickory fall Carya ovata, shagbark hickory fall Celtis occidentalis, hackberry fall Ouercus alba, white oak...plantain) summer Dalea multiflora (many-flowered prairie clover) summer Dalea purpurea (purple prairie clover) summer Desmanthus illinoensis ...include Illinois bundleflow,_r (Desmanthus illinoensis ), prairie clover (Dalea tenuiflora) and blacke :d susan (Rudbeckia hirta). By August many of the

  15. Milan Army Ammunition Plant. Remedial Investigation Report. Volume 4. Appendices M - T

    Science.gov (United States)

    1991-12-01

    oak Quercus alba Willow oak Quercus phellos Osage orange Maclura pomifera Pecan Carya illinoensis Persimmon Diospyros virginiana Loblolly pine Pinus...Sweet gum Liquidambar styraciflua Pignut hickory Carya glabra Shagbark hickory Ca,’ya ovata Holly h1ex opaca Black locust Acer rubrum Black oak Quercus

  16. Cultural Resources Survey and Testing for Davis Pond Freshwater Diversion, St. Charles Parish, Louisiana. Volume 1

    Science.gov (United States)

    1994-05-01

    virginiana, Q. alba, Q. nigra), shagbark hickory (Carya ovata), hackberry (Celtis laevigata ), sweetgum (Liquidambar styaciflua), pecan (Carya illinoiensis...Subdominants include the sweet gum (Liquidambar stryaciflua), hackberry (Celtis laevigata ), and live oak (Quercus virginiana). Other forest species...common shrub species are palmetto (Sabal minor) and green haw ( Crataegus viridis), but thickets of possum-haw (Ilex decidua) also occur. Within

  17. [Changes in soil organic carbon and soil microbial functional diversity of Carya cathayensis plantations under intensive managements].

    Science.gov (United States)

    Wu, Jia-Sen; Qian, Jin-Fang; Tong, Zhi-Peng; Huang, Jian-Qin; Zhao, Ke-Li

    2014-09-01

    The change characteristics of soil organic carbon and microbial function diversity in Chinese hickory Carya cathayensis stands with different intensive-management durations (5, 10, 15 and 20 years) were studied. The results showed that soil total organic carbon (TOC), microbial biomass carbon (MBC), water-soluble organic carbon (WSOC) decreased significantly, while the stability of soil C pool increased significantly after the conversion from evergreen and deciduous broadleaf forest to intensively-managed forest (IMF). TOC, MBC and WSOC in the hickory forest soil decreased by 28.4%, 34.1% and 53.3% with 5-year intensive management, and by 38.6%, 48.9% and 64.1% with 20-year intensive management, respectively. The proportions of carboxyl C, phenolic C and aromatic C in the hickory forest soil all increased significantly, and the aromaticity of soil organic C increased by 23.0%. Soil microbial functional diversity decreased greatly af- ter intensive management of Chinese hickory forest. Significant differences in average well color development (AWCD) were found between the 0- and 5-year treatments and the 10-, 15- and 20- year treatments. The microbial diversity indexes (H) and evenness indexes (E) in the 0- and 5-year treatments were much greater than in the 10- and 20-year treatments. Correlation analysis showed that there were significant correlations among soil TOC, WSOC, MBC, AWCD, H and E.

  18. PCR detection of Babesia ovata from questing ticks in Japan.

    Science.gov (United States)

    Sivakumar, Thillaiampalam; Tattiyapong, Muncharee; Okubo, Kazuhiro; Suganuma, Keisuke; Hayashida, Kyoko; Igarashi, Ikuo; Zakimi, Satoshi; Matsumoto, Kotaro; Inokuma, Hisashi; Yokoyama, Naoaki

    2014-04-01

    Babesia ovata is a tick-transmitted hemoprotozoan parasite of cattle. In the present study, we analyzed tick DNA samples (n=1459) prepared from questing ticks collected from various cattle pastures in Hokkaido (Shibecha, Taiki, Otofuke, Memuro, and Shin-Hidaka districts) and Okinawa (Yonaguni Island) prefectures of Japan for B. ovata. When all the tick DNA samples were screened by a previously described B. ovata-specific apical membrane antigen-1 (AMA-1) gene-based polymerase chain reaction (PCR) assay, none of the DNA samples was positive. Therefore, we developed a PCR assay based on the protozoan beta-tubulin (β-tubulin) gene to detect B. ovata from ticks in Japan. In the specificity test, the PCR assay amplified the expected 444-bp target gene fragment from B. ovata DNA. No PCR products were amplified from DNA samples from other blood pathogens, bovine blood, or ticks. In addition, the PCR assay detected 100 fg of B. ovata-genomic DNA extracted from an in vitro culture of the parasites. Subsequently, when all the tick DNA samples were screened by this new PCR assay, 18 were positive for B. ovata. Positive samples were found only in the Yonaguni and Memuro areas. In Okinawa, where all the ticks were identified as Haemaphysalis longicornis, 9.7% of the samples were PCR-positive, while a single tick (Ixodes ovatus) from Memuro was infected with B. ovata. When the nucleotide sequences of the PCR amplicons were phylogenetically analyzed, they formed a separate clade containing a previously described β-tubulin gene sequence from B. ovata (Miyake strain), confirming that the PCR assay had detected only B. ovata from the tick DNA samples. This is the first report that describes the PCR detection of B. ovata in ticks. The findings warrant transmission experiments to evaluate I. ovatus as a potential vector of B. ovata.

  19. Natural Areas Inventory 1981 (GREAT III)

    Science.gov (United States)

    1982-01-01

    lanuginosa 3 Campsis radicans Carpinus caroliniana Carya cordifonnis Carya illinoensis Carya laciniosa Carya ovalis 2. Carya ovata Carya ...texana Carya toraentosa Ceanothus americanus Celastrus scandens 2, Celtis laevigata ^Celtis occidentalis Celtis tenuifolia 3 Cephalanthus

  20. Phase 1 Cultural Resources Inventory of Public Access Lands in the Atchafalaya Basin, Vicinity of the Sherburne Wildlife Management Area, Pointe Coupee, St. Martin and Iberville Parishes, Louisiana

    Science.gov (United States)

    1994-03-16

    Quercus virginiana, Q. alba, Q. nigra, Q. lyrata), shagbark hickory (Carya ovata), hackberry (Celtie laevigata ), sweetgum and blackgum 51...aquatica), boxelder (Acer negur’ o), rough-leaf dogwood (Cornus drummondili), mayhaw ( Crataegus opaca), and waxmyrtle (Myrica cerifera) (Gibson 1978...Celtis laevigata ), and live oak (Quercus virginiana). Other forest species include the box-elder (Acer negundo), honey-locust (Gleditsia triacanthos

  1. National Wetland Plant List Indicator Rating Definitions

    Science.gov (United States)

    2012-07-01

    cut grass), Acorus americanus (sweetflag), Carex aquatilis (leafy tussock sedge ), and Toxicodendron vernix (poison sumac). FACW (Facultative Wetland...where water saturates the soils or floods the soil surface at least seasonally. Examples include Carex scoparia (broom sedge ), Aconitum columbianum...Ambrosia artemisifolia (annual ragweed), Betula papyrifera (paper birch), Carex eburnea (bristle-leaf sedge ), Carya ovata (shag-bark hickory), Elymus

  2. Assessment of genetic diversity in Isabgol (Plantago ovata Forsk ...

    African Journals Online (AJOL)

    sandeep kaswan

    using random amplified polymorphic DNA ... RAPD markers appeared more informative than ISSR in determining the genetic ... Key words: Plantago ovata, molecular marker, RAPD, ISSR, genetic diversity, medicinal plant. .... monomorphic.

  3. Effect of 26 years of intensively managed Carya cathayensis stands on soil organic carbon and fertility.

    Science.gov (United States)

    Wu, Jiasen; Huang, Jianqin; Liu, Dan; Li, Jianwu; Zhang, Jinchi; Wang, Hailong

    2014-01-01

    Chinese hickory (Carya cathayensis), a popular nut food tree species, is mainly distributed in southeastern China. A field study was carried out to investigate the effect of long-term intensive management on fertility of soils under a C. cathayensis forest. Results showed that after 26 years' intensive management, the soil organic carbon (SOC) content of the A and B horizons reduced by 19% and 14%, respectively. The reduced components of SOC are mainly the alkyl C and O-alkyl C, whereas the aromatic C and carbonyl C remain unchanged. The reduction of active organic matter could result in degradation of soil fertility. The pH value of soil in the A horizon had dropped by 0.7 units on average. The concentrations of the major nutrients also showed a decreasing trend. On average the concentrations of total nitrogen (N), phosphorus (P), and potassium (K) of tested soils dropped by 21.8%, 7.6%, and 13.6%, respectively, in the A horizon. To sustain the soil fertility and C. cathayensis production, it is recommended that more organic fertilizers (manures) should be used together with chemical fertilizers. Lime should also be applied to reduce soil acidity.

  4. Effect of 26 Years of Intensively Managed Carya cathayensis Stands on Soil Organic Carbon and Fertility

    Directory of Open Access Journals (Sweden)

    Jiasen Wu

    2014-01-01

    Full Text Available Chinese hickory (Carya cathayensis, a popular nut food tree species, is mainly distributed in southeastern China. A field study was carried out to investigate the effect of long-term intensive management on fertility of soils under a C. cathayensis forest. Results showed that after 26 years’ intensive management, the soil organic carbon (SOC content of the A and B horizons reduced by 19% and 14%, respectively. The reduced components of SOC are mainly the alkyl C and O-alkyl C, whereas the aromatic C and carbonyl C remain unchanged. The reduction of active organic matter could result in degradation of soil fertility. The pH value of soil in the A horizon had dropped by 0.7 units on average. The concentrations of the major nutrients also showed a decreasing trend. On average the concentrations of total nitrogen (N, phosphorus (P, and potassium (K of tested soils dropped by 21.8%, 7.6%, and 13.6%, respectively, in the A horizon. To sustain the soil fertility and C. cathayensis production, it is recommended that more organic fertilizers (manures should be used together with chemical fertilizers. Lime should also be applied to reduce soil acidity.

  5. First record of Ostreopsis cfr. ovata on macroalgae in the Northern Adriatic Sea

    Energy Technology Data Exchange (ETDEWEB)

    Monti, Marina [Department of Biological Oceanography, National Institute of Oceanography and Applied Geophysics, Via Auguste Piccard 54, 34010 Trieste (Italy)]. E-mail: mmonti@inogs.it; Minocci, Marco [Department of Biological Oceanography, National Institute of Oceanography and Applied Geophysics, Via Auguste Piccard 54, 34010 Trieste (Italy); Beran, Alfred [Department of Biological Oceanography, National Institute of Oceanography and Applied Geophysics, Via Auguste Piccard 54, 34010 Trieste (Italy); Ivesa, Ljiljana [Ruder Boskovic Institute, Center for Marine Research, G. Paliaga 5, 52210 Rovinj (Croatia)

    2007-05-15

    Ostreopsis ovata is an epiphytic potentially toxic dinoflagellate. It has a world-wide distribution, normally associated with other epiphytic or benthic dinoflagellates. In tropical seas O. ovata is often associated with the genera Gambierdiscus, Coolia and Prorocentrum, causing cinguatera fish poisoning. Recently, Ostreopsis spp. blooms in the Tyrrhenian and southern Adriatic Sea have been related to human health problems, such as breathing and skin irritation. Here we report the first record of Ostreopsis cfr. ovata in the Northern Adriatic Sea. O. cfr. ovata was isolated from macroalgae in two areas, the Gulf of Trieste (Italy) and close to Rovinj (Croatia). The microalga was identified by scanning electron microscopy and by fluorescence light microscopy. Size range and thecal pore structure were similar to those described for O. cfr. ovata in previous studies. Ostreopsis cfr. ovata was present on all the macroalgae collected, particularly browns and reds. The microalgal association on macroalgae was mostly composed of Ostreopsis sp., Coolia monotis and Coscinodiscus sp.

  6. Antioxidation effect of Carya cathayensis sarg oil

    Institute of Scientific and Technical Information of China (English)

    Li Zhule; Xu Yingbi; Chen Honghong

    2007-01-01

    [Objective] The antioxidation effect of Carya cathayensis sarg (CCS) Oil was qualitatively and quantitatively detected.[Method] 50 male mice were divided into 5 groups equally and randomly and among them,the three groups were either negative, or model control, or positive control (ginseng saponins), respectively.Two remaining groups were orally fed with low and high dosages of CCS oil ((9 ml/(kg·d) and (33 ml/(kg·d)), respectively.All groups were injected D galactose through hypodermic except the negative control ones which were only treated with equals amount of distilled water.The superoxide dismutase (SOD), maleic dialdehyde(MDA) and monoamine oxidase(MAO) were analyzed with blood sample and brain tissue 42 days post treatment.[Result] It was showed that the activity of SOD enzyme was increased in the CCS oil groups, while MDA and MAO content were decreased in the CCS oil groups compared with that of other groups with significance observed in the group fed with high dose of CCS oil.[Conclusion] The result indicated that the CCS oil has the ability of antioxidation and is useful to human health.

  7. [Study of the new settler Beroe ovata in the Black sea].

    Science.gov (United States)

    Shiganova, T A; Bulgakova, Iu V; Sorokin, P Iu; Lukashev, Iu F

    2000-01-01

    Primary data on population, size, and distribution of a new settler--comb jelly Beroe ovata--in the Black Sea are presented. We studied certain aspects of its nutrition, consumed organisms, and digestion time. Comb jellies Mnemiopsis leidyi and Pleurobachia pileus were established as the nutritional targets of B. ovata. Mnemiopsis proved to be more accessible and assimilable. Preliminary data on metabolic level and threshold oxygen content in B. ovata were obtained; proportions of dry and wet weight of B. ovata were determined. Population changes of new settler Mnemiopsis and other jellylike animals in the Northeast part of the sea induced by B. ovata were analyzed. We observed sharp decrease in population of Mnemiopsis, a species that induced degradation of the Black Sea ecosystem within the last decade.

  8. The Input-output Status and Farmers’Willingness to Choose Ecological Operation of Hickory

    Institute of Scientific and Technical Information of China (English)

    LIU Qiang; LI Shi-yong; WU Wei-guang

    2012-01-01

    This study takes Lin’an City which early carries out the experiment of ecological operation of hickory as the study site.On the basis of the input-output data on hickory and farmers’ land,we analyze the input-output status of hickory land which practises ecological operation,the operators’ willingness to accept ecological operation and the influencing factors.The results show that in the short term,ecological operation of hickory will have a certain negative impact on the economic benefits;within the experimental area,the degree of operators’ willingness to accept ecological operation of hickory is high,and the operators have a clear understanding of long-term comprehensive benefits which may be brought by ecological operation;the ecological experiment and demonstration of hickory have achieved certain results;family income level,characteristics of householders,education and training,and so on,are the main factors that affect the operators’ willingness to choose ecological operation.Finally,for how to further improve the promotion efficiency of ecological operation of hickory,we put forth some constructive recommendations.

  9. Ultrastructural features of the benthic dinoflagellate Ostreopsis cf. ovata (Dinophyceae).

    Science.gov (United States)

    Escalera, Laura; Benvenuto, Giovanna; Scalco, Eleonora; Zingone, Adriana; Montresor, Marina

    2014-05-01

    The toxic benthic dinoflagellate Ostreopsis cf. ovata has considerably expanded its distribution range in the last decade, posing risks to human health. Several aspects of this species are still poorly known. We studied ultrastructural features of cultivated and natural populations of Ostreopsis cf. ovata from the Gulf of Naples (Mediterranean Sea) using confocal laser scanning, and scanning and transmission electron microscopy. New information on the morphology and location of several sulcal plates was gained and a new plate designation is suggested that better fits the one applied to other Gonyaulacales. The microtubular component of the cytoskeleton, revealed using an anti-β-tubulin antibody, consisted of a cortical layer of microtubules arranged asymmetrically in the episome and in the hyposome, complemented by a complex inner microtubular system running from the sulcal area towards the internal part of the cell. The conspicuous canal was delimited by two thick, burin-shaped lobes ending in a tubular ventral opening. The canal was surrounded by mucocysts discharging their content into it. A similar structure has been reported in other benthic and planktonic dinoflagellates and may be interpreted as an example of convergent evolution in species producing large amounts of mucus. Copyright © 2014 Elsevier GmbH. All rights reserved.

  10. Outcrossing rates and relatedness estimates in pecan (Carya illinoinensis) populations.

    Science.gov (United States)

    Rüter, B; Hamrick, J L; Wood, B W

    2000-01-01

    Estimates of single and multilocus outcrossing rates as well as relatedness among progeny of individual seed trees were obtained for 14 populations of pecan [Carya illinoinensis (Wangenh.) K. Koch]. Mean outcrossing estimates were not significantly different from 1.0 and relatedness values indicate that most progeny within families are half sibs. Biparental inbreeding was insignificant in all study sites, and inbreeding coefficients indicated that populations were close to inbreeding equilibrium.

  11. Ostreopsis cf. ovata dynamics in the NW Mediterranean Sea in relation to biotic and abiotic factors.

    Science.gov (United States)

    Carnicer, Olga; Guallar, Carles; Andree, Karl B; Diogène, Jorge; Fernández-Tejedor, Margarita

    2015-11-01

    An expansion of the distribution of Ostreopsis cf. ovata, a dinoflagellate which produces palytoxin-like compounds, has been reported in recent years. Economical and social interests are affected by blooms, as they are responsible for respiratory and skin problems in humans and may cause damage to marine organisms. In order to identify the most influential environmental factors that trigger proliferations of O. cf. ovata in the area of the adjacent shallow rocky coast of the Ebro Delta (NW Mediterranean Sea) a three-year survey was performed on the metaphytic microalgae community growing on the macrophytes Jania rubens and Corallina elongata. Small-size diatoms were more abundant than dinoflagellates; O. cf. ovata was identified as the only species present from the genus. Seawater temperature was the primary driver defining the ecological niche of O. cf. ovata. Freshwater and groundwater fluxes were more pronounced in southern than in northern sites, which may have resulted in a distinct O. cf. ovata spatial distribution, with the highest records of abundance and more frequent blooms in the north. In consequence, negative correlations between the abundance of O. cf. ovata and nitrate concentrations and significant positive correlation with salinity were observed. The temporal pattern of O. cf. ovata dynamics from mid-July to early-November is probably due to the fact that this species is observed only above a certain threshold temperature of seawater. Metaphytic cells of O. cf. ovata were smaller in the northern site than in the south, possibly as a result of an increase in cell division, coinciding with higher abundance, and this could be an indicator of favorable conditions. Toxicity in planktonic cells was negatively correlated with cell abundance in the water column, achieving maximum concentrations of 25pg. PLTX eqcell(-1). Copyright © 2015 Elsevier Inc. All rights reserved.

  12. Growth inhibition of Sporomusa ovata by incorporation of benzimidazole bases into cobamides.

    Science.gov (United States)

    Mok, Kenny C; Taga, Michiko E

    2013-05-01

    Phenolyl cobamides are unique members of a class of cobalt-containing cofactors that includes vitamin B12 (cobalamin). Cobamide cofactors facilitate diverse reactions in prokaryotes and eukaryotes. Phenolyl cobamides are structurally and chemically distinct from the more commonly used benzimidazolyl cobamides such as cobalamin, as the lower axial ligand is a phenolic group rather than a benzimidazole. The functional significance of this difference is not well understood. Here we show that in the bacterium Sporomusa ovata, the only organism known to synthesize phenolyl cobamides, several cobamide-dependent acetogenic metabolisms have a requirement or preference for phenolyl cobamides. The addition of benzimidazoles to S. ovata cultures results in a decrease in growth rate when grown on methanol, 3,4-dimethoxybenzoate, H2 plus CO2, or betaine. Suppression of native p-cresolyl cobamide synthesis and production of benzimidazolyl cobamides occur upon the addition of benzimidazoles, indicating that benzimidazolyl cobamides are not functionally equivalent to the phenolyl cobamide cofactors produced by S. ovata. We further show that S. ovata is capable of incorporating other phenolic compounds into cobamides that function in methanol metabolism. These results demonstrate that S. ovata can incorporate a wide range of compounds as cobamide lower ligands, despite its preference for phenolyl cobamides in the metabolism of certain energy substrates. To our knowledge, S. ovata is unique among cobamide-dependent organisms in its preferential utilization of phenolyl cobamides.

  13. Cultural Resources of the Ohio River Floodplain in Illinois,

    Science.gov (United States)

    1977-10-15

    americana), hickories, .nd sweet gum, with occasional black walnut (Juailapns _igrij), butternut (Iluglans cinerea), and pecan ( Carya illinoensis ) on better...Quercius velutina), shingle oak (Quercus imbricaria), and various hickories, particularly the more xeric species such as black hickory ( Carya texana...where soil is thin or exposure hazardous. Stands of various hickories ( Carya ) are interspersed. Smaller trees might include dogwood (Cornus spp.) and

  14. Lower Mississippi River Environmental Program. Report 2. A Physical Description of Main Stem Levee Borrow Pits along the Lower Mississippi River

    Science.gov (United States)

    1988-02-01

    Table BI (Continued) Scientific Name Common Name Carya cordiformis Bitternut hickoryCarya illinoensis PecanCarya laciniosa Shagbark hickoryCassia...Carex spp. Sedges Carex stipata Awl-fruited sedge Carpinus caroliniana American hornbeam Carya aquatica Water hickory (Continued) (Sheet 1 of 6) B2

  15. Identification of phenolyl cobamide from the homoacetogenic bacterium Sporomusa ovata.

    Science.gov (United States)

    Stupperich, E; Eisinger, H J; Kräutler, B

    1989-12-22

    Phenolyl cobamide was isolated from cyanide extractions of the anaerobic eubacterium Sporomusa ovata. The proposed corrinoid structure [Co alpha,Co beta-(monocyano,monoaquo)-phenolyl cobamide] has been deduced from 1H NMR, fast-atom-bombardment mass spectroscopy and ultraviolet/visible spectroscopy data. The complete corrinoid resembled p-cresolyl cobamide [Co alpha,Co beta-(monocyano,monoaquo)-p-cresolyl cobamide], which recently has been obtained from cyanide extractions of the same bacterium. The structures and chemical properties of both cobamides with uncoordinated nucleotides differed significantly from those of vitamin B12 [Co alpha-[alpha-(5,6-dimethylbenzimidazolyl)]-Co beta-cyanocobamide]. Sporomusa synthesized coenzymes of phenolyl cobamide and p-cresolyl cobamide in considerable amounts of 400 nmol/g and 1700 nmol/g dry cells, respectively. More than 90% of the complete corrinoid pool of the homoacetogenic bacterium consisted of these two corrinoids, indicating that they are physiologically important coenzymes of the bacterial metabolism.

  16. Mapping of Carya cathayensis Spatial Distribution with Linear Spectral Mixture Model%基于线性混合像元分解技术提取山核桃空间分布

    Institute of Scientific and Technical Information of China (English)

    奚祯苑; 刘丽娟; 陆灯盛; 葛宏立; 陈耀亮

    2015-01-01

    【目的】利用混合像元分解技术研究一种快速、准确提取山核桃空间分布信息的新方法,为亚热带经济林资源及其动态变化的快速检测提供新手段。【方法】以浙江省临安市西部为研究区,首先,采用线性混合像元分解技术获取植被(GV)、阴影(shade)和土壤(soil)3个分量图,据实地考察,基于山核桃的 GV,shade 和 soil分量与其他植被的区分性较大的特征,构建植被-土壤指数、植被-阴影指数和归一化多分量指数3种新的指数;然后,基于归一化植被指数和新的指数建立决策树模型提取山核桃;最后,将研究区的土地覆盖类型分为山核桃和其他地类,并通过地面调查收集的样地数据和 Google Earth高分辨率影像对分类结果进行验证。【结果】归一化多分量指数可最大限度地扩大山核桃与其他在光谱上易混淆的植被之间的差距,与其他植被的可分离性最好,因此,将归一化多分量指数作为提取山核桃的最优指数。基于该指数提取山核桃的总体精度达88.67%,Kappa系数为0.76,成功实现临安西部区域的山核桃信息提取,证明使用线性混合像元分解模型提取山核桃的潜力。【结论】针对山核桃经济林提取而提出的归一化多分量指数,物理意义明确,实现简单,易于理解和分析,尽可能地降低由于步骤复杂、样本类数多而造成的系统误差和人为误差,其结果还可为今后其他地区山核桃的提取或具有相似生长条件的经济林空间分布信息的提取提供参考,具有较高的应用潜力和推广价值。%Objective]Hickory( Carya cathayensis) ,one of the most important cash forests in Zhejiang province,plays an important role in improving economic conditions for local people and government. Currently,the hickory plantation area is mainly calculated from the estimation of hickory owners,but this area

  17. Antimicrobial activity and phytochemical characterization of Carya illinoensis.

    Science.gov (United States)

    Bottari, Nathieli Bianchin; Lopes, Leonardo Quintana Soares; Pizzuti, Kauana; Filippi Dos Santos Alves, Camilla; Corrêa, Marcos Saldanha; Bolzan, Leandro Perger; Zago, Adriana; de Almeida Vaucher, Rodrigo; Boligon, Aline Augusti; Giongo, Janice Luehring; Baldissera, Matheus Dellaméa; Santos, Roberto Christ Vianna

    2017-03-01

    Carya illinoensis is a widespread species, belonging to the Juglandaceae family, commonly known as Pecan. Popularly, the leaves have been used in the treatment of smoking as a hypoglycemic, cleansing, astringent, keratolytic, antioxidant, and antimicrobial agent. The following research aimed to identify for the first time the phytochemical compounds present in the leaves of C. illinoensis and carry out the determination of antimicrobial activity of aqueous and ethanolic extracts. The antimicrobial activity was tested against 20 microorganisms by determining the minimum inhibitory concentration (MIC). Phenolic acids (gallic acid and ellagic acid), flavonoids (rutin), and tannins (catechins and epicatechins) were identified by HPLC-DAD and may be partially responsible for the antimicrobial activity against Gram-positive, Gram-negative, and yeast. The results showed MIC values between 25 mg/mL and 0.78 mg/mL. The extracts were also able to inhibit the production of germ tubes by Candida albicans.

  18. Multiple Ceratocystis smalleyi infections associated with reduced stem water transport in bitternut hickory.

    Science.gov (United States)

    Park, J-H; Juzwik, J; Cavender-Bares, J

    2013-06-01

    Hundreds of cankers caused by Ceratocystis smalleyi are associated with hickory bark beetle-attacked bitternut hickory exhibiting rapid crown decline in the north-central and northeastern United States. Discolored sapwood colonized by the fungus commonly underlies the cankers. Field studies were conducted to test the hypothesis that C. smalleyi infections cause vascular system dysfunction in infected trees. Fifty C. smalleyi inoculations made at 1.8 to 3.8 m in height on stems of healthy bitternut hickory trees (13 to 28 cm in diameter at 1.4 m in height) resulted in extensive canker formation and sapwood discoloration 12 to 14 months after treatment compared with water-inoculated and noninoculated controls. Sap flow velocity (midday) was significantly lower in the infected trees compared with that in the controls. Sap flow velocity also was inversely correlated with the proportion of bark area with cankered tissues and with tylose abundance in the youngest two growth rings. Tylose formation in current-year vessels associated with C. smalleyi infections is likely responsible for much of the water transport disruption. It is hypothesized that multiple stem infections of C. smalleyi and the resulting xylem dysfunction contribute to crown wilt development in bitternut hickory exhibiting rapid crown decline.

  19. Hickory, N.C., Receives $200,000 EPA Brownfield Grants to Revitalize, Strengthen Local Economy

    Science.gov (United States)

    ATLANTA - At a press conference in Huntington, W.Va., today, the U.S. Environmental Protection Agency (EPA) announced a $200,000 Brownfields Area-Wide Planning (AWP) grant to the City of Hickory, N.C., for reuse planning that includes residential an

  20. ArsAB, a novel enzyme from Sporomusa ovata activates phenolic bases for adenosylcobamide biosynthesis.

    Science.gov (United States)

    Chan, Chi Ho; Escalante-Semerena, Jorge C

    2011-08-01

    In the homoacetogenic bacterium Sporomusa ovata, phenol and p-cresol are converted into α-ribotides, which are incorporated into biologically active cobamides (Cbas) whose lower ligand bases do not form axial co-ordination bonds with the cobalt ion of the corrin ring. Here we report the identity of two S. ovata genes that encode an enzyme that transfers the phosphoribosyl group of nicotinate mononucleotide (NaMN) to phenol or p-cresol, yielding α-O-glycosidic ribotides. The alluded genes were named arsA and arsB (for alpha-ribotide synthesis), arsA and arsB were isolated from a genomic DNA library of S. ovata. A positive selection strategy using an Escherichia coli strain devoid of NaMN:5,6-dimethylbenzimidazole (DMB) phosphoribosyltransferase (CobT) activity was used to isolate a fragment of S. ovata DNA that contained arsA and arsB, whose nucleotide sequences overlapped by 8 bp. SoArsAB was isolated to homogeneity, shown to be functional as a heterodimer, and to have highest activity at pH 9. SoArsAB also activated DMB to its α-N-glycosidic ribotide. Previously characterized CobT-like enzymes activate DMB but do not activate phenolics. NMR spectroscopy was used to confirm the incorporation of phenol into the cobamide, and mass spectrometry was used to identify SoArsAB reaction products. © 2011 Blackwell Publishing Ltd.

  1. Isolation, characterization and investigation of Plantago ovata husk polysaccharide as superdisintegrant.

    Science.gov (United States)

    Pawar, Harshal; Varkhade, Chhaya

    2014-08-01

    Psyllium husk (Plantago ovata, Family: Plantaginaceae) contains a high proportion of hemicellulose, composed of a xylan backbone linked with arabinose, rhamnose, and galacturonic acid units (arabinoxylans). Polysaccharide was isolated from Psyllium husk using solvent precipitation method. The isolated polysaccharide was evaluated for various physicochemical parameters. The rheological behavior of polysaccharide (1% w/v in water) was studied using Brookfield viscometer. Polysaccharide derived from the husk of P. ovata was investigated as superdisintegrant in the fast dissolving tablets. Valsartan, an antihypertensive drug, was selected as a model drug. The tablets of Valsartan were prepared separately using different concentrations (1, 2.5, 5, 7.5% w/w) of isolated Plantago ovata (P. ovata) husk polysaccharide (Natural) and crospovidone as a synthetic superdisintegrant by direct compression method. The prepared tablets were evaluated for various pre-compression and post-compression parameters. The drug excipient interactions were characterized by FTIR studies. The formulation F4 containing7.5% polysaccharide showed rapid wetting time and disintegration time as compared to formulation prepared using synthetic superdisintegrant at the same concentration level. Hence batch F4 was considered as optimized formulation. The stability studies were performed on formulation F4. The disintegration time and in vitro drug release of the optimized formulation was compared with the marketed formulation (Conventional tablets).

  2. An Archaeological Survey of the Shoreline at Public Use Areas Pomme de Terre Lake, Hickory and Polk Counties, Missouri

    Science.gov (United States)

    1988-01-01

    O 1C A II Copy Pomme de Terre Lake US Army Corps Missouri of Engineers Kansas City District Fischer-Stein Associates, Inc. Carbondale, Illinois An...Archaeological Survey of Ou The Shoreline at Public Use Areas Pomme de Terre Lake, Hickory and Polk Counties, Missouri I’I DISRIBU11ON STA7EMIENIT DT!C...of shore- line at nine Corps of Engineer Public Use Areas at Pomme de Terre Lake, Hickory and Polk counties, Missouri, is presented. Previous

  3. Laboratory mortality and mycosis of adult Curculio caryae (Coleoptera: Curculionidae) following application of Metarhizium anisopliae in the laboratory and field

    Science.gov (United States)

    The pecan weevil, Curculio caryae, is a key pest of pecans. Our objective was to determine the potential of Metarhizium anisopliae to control emerging C. caryae adults. First, a laboratory test was conducted to compare four Beauveria bassiana strains (Bb GA2, BbLA3, BbMS1, and GHA) and three M. an...

  4. Detection of Drought-Induced Hickory Disturbances in Western Lin An County, China, Using Multitemporal Landsat Imagery

    Directory of Open Access Journals (Sweden)

    Zhenyuan Xi

    2016-04-01

    Full Text Available Hickory plantations play an important role in improving local farmers’ economic conditions, but extreme drought in July–August 2013 seriously influenced hickory nut production. It is necessary to understand the extent and magnitude of this drought-induced hickory disturbance through mapping its spatial distribution using remote sensing data. This paper proposes a new approach to examine hickory disturbance based on multitemporal Landsat imagery. Ratios of green vegetation to soil fractions were calculated, in which the green vegetation and soil fractions were extracted from Landsat multispectral imagery using the linear spectral mixture analysis approach. We used the differences between before-drought and after-drought ratios to detect hickory disturbances. Four disturbance levels—non-disturbance, light, medium, and severe—were grouped according to the field survey data. The spatial distribution of these four levels was developed using the ratio-based approach. The result indicates that this approach is effective to detect drought-induced hickory disturbance and may be transferred to detect other kinds of disturbances, such as forest disease and selective logging. Cautions should be taken to properly select image acquisition dates and the change detection period, in addition to the approach itself.

  5. Natural and Human-Induced Dynamics on Big Hickory Island, Florida

    Directory of Open Access Journals (Sweden)

    Tiffany M. Roberts Briggs

    2016-02-01

    Full Text Available Big Hickory Island, located in Lee County along the mixed-energy west Florida coast, experiences high long-term rates of shoreline recession, with much of the erosion concentrated along the central and southern portions of the island. In 2013, approximately 86,300 cubic meters of sand from an adjacent tidal inlet to the north were placed along 457 m to restore the beach and dune system. In an effort to combat erosion, seven concrete king-pile groins with adjustable panels were constructed subsequent to the completion of the beach nourishment. Natural and human-induced dynamics of Big Hickory Island are discussed through analysis of shoreline and morphologic change using historic aerial photographs and topographic and bathymetric field surveys of the recent beach erosion mitigation project. Although much of the long-term anomalously high rates of erosion for the area are related to natural interchanges between the sand resources of the barrier islands and adjacent ebb tidal shoals, additional reduction in sand supply is a result of human-interventions updrift of Big Hickory over the last several decades. The coupled natural and anthropogenic influences are driving the coastal processes toward a different morphodynamic state than would have occurred under natural processes alone.

  6. The toxic benthic dinoflagellate Ostreopsis ovata: quantification of proliferation along the coastline of Genoa, Italy.

    Science.gov (United States)

    Mangialajo, L; Bertolotto, R; Cattaneo-Vietti, R; Chiantore, M; Grillo, C; Lemee, R; Melchiorre, N; Moretto, P; Povero, P; Ruggieri, N

    2008-06-01

    Toxic harmful algal bloom (HAB) occurrence is becoming more frequent and problematic in highly urbanized coastal zones. In summer 2005 along the urbanized Genoa coastline (Ligurian Sea, North western Mediterranean Sea), local first aid stations treated about 200 people, who all showed similar symptoms following exposure to marine aerosols. The link with proliferation of Ostreopsis ovata was made, and it highlighted for the first time, the risks that benthic HABs may represent in highly urbanised temperate areas. Subsequently, a specific monitoring plan was designed and implemented in the same area in July 2006, before the first signs of Ostreopsis proliferation were detected. Here we report on this quantification of an Ostreopsis ovata bloom in the Ligurian Sea. Cells were quantified both in the water column and in the epiphytic community on macrophytes. Our results suggest a role of sea water temperature and weather conditions in favouring bloom development.

  7. First recording of the non-native species Beroe ovata Mayer 1912 in the Aegean Sea

    Directory of Open Access Journals (Sweden)

    T.A. SHIGANOVA

    2007-06-01

    Full Text Available A new alien species Beroe ovata Mayer 1912 was recorded in the Aegean Sea. It is most likely that this species spread on the currents from the Black Sea. Beroe ovata is also alien to the Black Sea, where it was introduced in ballast waters from the Atlantic coastal area of the northern America. The species is established in the Black Sea and has decreased the population of another invaderMnemiopsis leidyi, which has favoured the recovery of the Black Sea ecosystem.We compare a new 1 species with the native species fam. Beroidae from the Mediterranean and predict its role in the ecosystem of the Aegean Sea using the Black Sea experience.

  8. First recording of the non-native species Beroe ovata Mayer 1912 in the Aegean Sea

    Directory of Open Access Journals (Sweden)

    T.A. SHIGANOVA

    2012-12-01

    Full Text Available A new alien species Beroe ovata Mayer 1912 was recorded in the Aegean Sea. It is most likely that this species spread on the currents from the Black Sea. Beroe ovata is also alien to the Black Sea, where it was introduced in ballast waters from the Atlantic coastal area of the northern America. The species is established in the Black Sea and has decreased the population of another invaderMnemiopsis leidyi, which has favoured the recovery of the Black Sea ecosystem.We compare a new 1 species with the native species fam. Beroidae from the Mediterranean and predict its role in the ecosystem of the Aegean Sea using the Black Sea experience.

  9. New insights on cytological and metabolic features of Ostreopsis cf. ovata Fukuyo (Dinophyceae: a multidisciplinary approach.

    Directory of Open Access Journals (Sweden)

    Giorgio Honsell

    Full Text Available The harmful dinoflagellate Ostreopsis cf. ovata has been causing toxic events along the Mediterranean coasts and other temperate and tropical areas, with increasing frequency during the last decade. Despite many studies, important biological features of this species are still poorly known. An integrated study, using different microscopy and molecular techniques, Raman microspectroscopy and high resolution liquid chromatography-mass spectrometry (HR LC-MS, was undertaken to elucidate cytological aspects, and identify main metabolites including toxins. The species was genetically identified as O. cf. ovata, Atlantic-Mediterranean clade. The ultrastructural results show unique features of the mucilage network abundantly produced by this species to colonize benthic substrates, with a new role of trichocysts, never described before. The amorphous polysaccharidic component of mucilage appears to derive from pusule fibrous material and mucocysts. In all stages of growth, the cells show an abundant production of lipids. Different developmental stages of chloroplasts are found in the peripheral cytoplasm and in the centre of cell. In vivo Raman microspectroscopy confirms the presence of the carotenoid peridinin in O. cf. ovata, and detects in several specimen the abundant presence of unsaturated lipids structurally related to docosahexaenoic acid. The HR LC-MS analysis reveals that ovatoxin-a is the predominant toxin, together with decreasing amounts of ovatoxin-b, -d/e, -c and putative palytoxin. Toxins concentration on a per cell basis increases from exponential to senescent phase. The results suggest that benthic blooms of this species are probably related to features such as the ability to create a unique mucilaginous sheath covering the sea bottom, associated with the production of potent toxins as palytoxin-like compounds. In this way, O. cf. ovata may be able to rapidly colonize benthic substrates outcompeting other species.

  10. Philometra ovata (Nematoda: Philometroidea): a potential sentinel species of heavy metal accumulation.

    Science.gov (United States)

    Barus, V; Jarkovský, J; Prokes, M

    2007-04-01

    To assess the bioindicator value of parasites, the concentrations of six heavy metals (Cr, Cu, Pb, Cd, Ni and Zn) were analyzed by atomic absorption spectrometry in gravid females of the nematode Philometra ovata, body cavity parasites of gudgeon (Gobio gobio) and muscle samples of infected and uninfected hosts. The concentration of heavy metals was significantly higher in specimens of P. ovata compared to the host muscle tissue. The parasite-to-muscle ratio of heavy metals varied from 3.2 to 121.7, in increasing concentrations for Cr, Cd, Cu, Pb, Ni and Zn. The presence of parasites did not influence the heavy metal content of the hosts, and no significant differences were found between muscle tissues of parasitized and non-parasitized fishes. The bioconcentration factor (BF = Cparasite/Csediment)varied between 0.4 and 25.8, in increasing order for Cd, Zn, Cu, Pb, Ni and Cr. These results indicate that P. ovata may serve as sensitive indicator species of heavy metal pollution in freshwater ecosystems.

  11. Formulation and evaluation of glipizide-loaded fast-dissolving tablets using husk of Plantago ovata as a superdisintegrant

    Directory of Open Access Journals (Sweden)

    Antesh Kumar Jha

    2011-01-01

    Full Text Available The objective of the present study was to develop fast-dissolving tablets (FDTs of glipizide, a sulfonylurea antidiabetic drug. The husk of Plantago ovata and pregelatinized husk of P. ovata were used as disintegrating agents. Microcrystalline cellulose was used as binder and starch (soluble was used as bulk-forming agent. The powder blends were evaluated for angle of repose, compressibility index and Hausner ratio. The results of angle of repose, compressibility index (% and Hausner ratio ranged from 24.23±0.57 to 29.34±0.78, 15.76±0.82 to 20.12±1.25 and 1.18±0.011 to 1.25±0.019, respectively. The tablet blends were converted into tablets by using direct compression method. The tablets were evaluated for disintegration test, hardness test, friability test, drug entrapment efficiency, content uniformity tests and drug release study. Formulations, which contained pregelatinized husk of P. ovata as a superdisintegrant, showed faster disintegration, higher percentage friability and lesser hardness than formulations containing husk of P. ovata as a superdisintegrant. Drug entrapment efficiency was found to be uniform among different batches of the tablets and ranged from 97.53±0.52 to 99.72±0.45. The results of content uniformity test of all the batches were found in the official range. The batches containing husk of P. ovata as a superdisintegrant released 15%-27% of glipizide per minute and those containing pregelatinized husk of P. ovata as a superdisintegrant released more than 95% of the drug within a minute. These results revealed that pregelatinized husk of P. ovata can be used as a superdisintegrant for obtaining FDTs.

  12. Rapid Development of Microsatellite Markers for Plantago ovata Forsk.: Using Next Generation Sequencing and Their Cross-Species Transferability

    Directory of Open Access Journals (Sweden)

    Ranbir Singh Fougat

    2014-06-01

    Full Text Available Isabgol (Plantago ovata Forsk. is an important medicinal plant having high pharmacological activity in its seed husk, which is substantially used in the food, beverages and packaging industries. Nevertheless, isabgol lags behind in research, particularly for genomic resources, like molecular markers, genetic maps, etc. Presently, molecular markers can be easily developed through next generation sequencing technologies, more efficiently, cost effectively and in less time than ever before. This study was framed keeping in view the need to develop molecular markers for this economically important crop by employing a microsatellite enrichment protocol using a next generation sequencing platform (ion torrent PGM™ to obtain simple sequence repeats (SSRs for Plantago ovata for the very first time. A total of 3447 contigs were assembled, which contained 249 SSRs. Thirty seven loci were randomly selected for primer development; of which, 30 loci were successfully amplified. The developed microsatellite markers showed the amplification of the expected size and cross-amplification in another six species of Plantago. The SSR markers were unable to show polymorphism within P. ovata, suggesting that low variability exists within genotypes of P. ovata. This study suggests that PGM™ sequencing is a rapid and cost-effective tool for developing SSR markers for non-model species, and the markers so-observed could be useful in the molecular breeding of P. ovata.

  13. Production of butyrate and caproate from a coculture of Sporomusa ovata and Clostridium kluyveri during MES

    DEFF Research Database (Denmark)

    Ammam, Fariza; Tremblay, Pier-Luc; Faraghi Parapari, Neda;

    2014-01-01

    the lack of genetic tools. S. ovata is able to produceethanol and acetate while C. kluyveri uses these two compounds as carbon source and producesbutyrate and caproate.The first step was to optimize the growth medium for S. ovata to increase ethanol production. Theeffect of trace metal ions such as SeO4...

  14. Chemical Constituents from Sonneratia ovata Backer and their in vitro Cytotoxicity and Acetylcholinesterase Inhibitory Activities

    DEFF Research Database (Denmark)

    Nguyen, Thi Hoai Thu; Huu Viet Thong, Phamb; Nguyen, KimTuyen Phamc

    2015-01-01

    -benzyl-β-d-glucopyranose (21) isolated from the leaves of Sonneratia ovata. Their chemical structures were established by spectroscopic data, as well as high resolution mass spectra and comparison with literature data. The in vitro acetylcholinesterase (AChE) inhibition and cytotoxic activities against HeLa (human epithelial...... carcinoma), NCI-H460 (human lung cancer), MCF-7 (human breast cancer) cancer cell lines and PHF (primary human fibroblast) cell were evaluated on some extracts and purified compounds at a concentration of 100 μg/mL. Compounds (5, 6, 23) exhibited cytotoxicity against the MCF-7 cell line with the IC50 values...

  15. Bacterial communities associated with the ctenophores Mnemiopsis leidyi and Beroe ovata.

    Science.gov (United States)

    Daniels, Camille; Breitbart, Mya

    2012-10-01

    Residing in a phylum of their own, ctenophores are gelatinous zooplankton that drift through the ocean's water column. Although ctenophores are known to be parasitized by a variety of eukaryotes, no studies have examined their bacterial associates. This study describes the bacterial communities associated with the lobate ctenophore Mnemiopsis leidyi and its natural predator Beroe ovata in Tampa Bay, Florida, USA. Investigations using terminal restriction fragment length polymorphism (T-RFLP) and cloning and sequencing of 16S rRNA genes demonstrated that ctenophore bacterial communities were distinct from the surrounding water. In addition, each ctenophore genus contained a unique microbiota. Ctenophore samples contained fewer bacterial operational taxonomic units (OTUs) by T-RFLP and lower diversity communities by 16S rRNA gene sequencing than the water column. Both ctenophore genera contained sequences related to bacteria previously described in marine invertebrates, and sequences similar to a sea anemone pathogen were abundant in B. ovata. Temporal sampling revealed that the ctenophore-associated bacterial communities varied over time, with no single OTU detected at all time points. This is the first report of distinct and dynamic bacterial communities associated with ctenophores, suggesting that these microbial consortia may play important roles in ctenophore ecology. Future work needs to elucidate the functional roles and mode of acquisition of these bacteria. © 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.

  16. Occurrences of the toxic dinoflagellate Ostreopsis ovata in relation with environmental factors in Kerkennah Island (Southern coast of Tunisia)

    Institute of Scientific and Technical Information of China (English)

    Mounir Ben brahim; Morsi Feki; Abderahmene Bouain

    2015-01-01

    Objective: To study the seasonal and monthly variability of the toxic dinoflagellate Ostreopsis ovata (O. ovata) in relation to environmental parameters in Kerkennah Island. Methods: Three water samples replicate of one-litter were taken daily for ten consecutive days on 12 months. All sampling water was kept in the dark at ambient temperature until their microscopic observation. Environmental variables such as salinity and temperature were measured in the field concomitantly as phytoplankton sampling. Nutrients (ammonium, nitrite, nitrate, phosphate and silicate) were analysed in laboratory with Auto-analyser Luebbe type. Cell identification and enumeration in water samples were performed with an inverted microscope after the sedimentation. Results: The highest abundance of O. ovata was recorded in summer. Analysis of variance showed significant difference of abundance between seasons, whereas no significant difference for month was detected. Factorial analysis ordination showed a positive correlation of Ostreopsis mainly with temperature and low correlation with nitrite and nitrate whereas the second axis (with 26.30% of variance) showed that Ostreopsis was correlated with temperature and salinity. Conclusions: The maximum abundance of Ostreopsis was reached in summer when temperature was high and a low relationship between O. ovata and nutrient was detected.

  17. Occurrences of the toxic dinoflagellate Ostreopsis ovata in relation with environmental factors in Kerkennah Island (Southern coast of Tunisia

    Directory of Open Access Journals (Sweden)

    Mounir Ben brahim

    2015-08-01

    Full Text Available Objective: To study the seasonal and monthly variability of the toxic dinoflagellate Ostreopsis ovata (O. ovata in relation to environmental parameters in Kerkennah Island. Methods: Three water samples replicate of one-litter were taken daily for ten consecutive days on 12 months. All sampling water was kept in the dark at ambient temperature until their microscopic observation. Environmental variables such as salinity and temperature were measured in the field concomitantly as phytoplankton sampling. Nutrients (ammonium, nitrite, nitrate, phosphate and silicate were analysed in laboratory with Auto-analyser Luebbe type. Cell identification and enumeration in water samples were performed with an inverted microscope after the sedimentation. Results: The highest abundance of O. ovata was recorded in summer. Analysis of variance showed significant difference of abundance between seasons, whereas no significant difference for month was detected. Factorial analysis ordination showed a positive correlation of Ostreopsis mainly with temperature and low correlation with nitrite and nitrate whereas the second axis (with 26.30% of variance showed that Ostreopsis was correlated with temperature and salinity. Conclusions: The maximum abundance of Ostreopsis was reached in summer when temperature was high and a low relationship between O. ovata and nutrient was detected.

  18. Pecan (Carya illinoinensis/Wangenh./K. Koch: A new species of the Allochthonous dendroflora in Serbia

    Directory of Open Access Journals (Sweden)

    Bobinac Martin

    2014-01-01

    Full Text Available This paper presents the alien species Carya illinoinensis (Wangenh. K. Koch, carya-pecan, (Juglandaceae A. Richard ex Kunth that has not been mentioned so far in the dendroflora of Serbia. One tree was recorded within the first Serbian sugar factory in Čukarica that is now a protected cultural property in the City of Belgrade. The tree is about 35 years old and about 20 m high. The length of the trunk without branches is 6.0 m and the diameter at breast height is 57 cm. Carya-pecan is a native species of the southeastern part of North America, and is grown in Europe for edible fruits and quality wood. The recorded tree in Belgrade is fruitful and characterized by good vitality and rapid growth. Due to its special characteristics, it can have multiple practical application in the territory of Serbia for decoration in urban areas, for forest plantations and in orchards. [Projekat Ministarstva nauke Republike Srbije, br. 31041: Šumski zasadi u funkciji povećanja pošumljenosti Srbije

  19. [New settlers comb jellies Mnemiopsis leidyi (A. Agassiz) and Beroe ovata Mayer 1912 and their influence on the pelagic ecosystem of the northeastern part of the Black Sea].

    Science.gov (United States)

    Shiganova, T A; Musaeva, E I; Bulgakova, Iu V; Mirzoian, Z A; MartynIuk, M L

    2003-01-01

    We analyzed the condition of pelagic ecosystem of northeastern Black Sea influenced by expansion of a new settler Beroe ovata in 1999-2001. Expansion of B. ovata considerably decreased the population of another new settler Mnemiopsis leidyi that deformed the Black Sea ecosystem for over a decade. Reduction of M. leidyi population limited its influence on the ecosystem and, consequently, we observed reestablishment of the main components of the Black Sea pelagic ecosystem--zooplankton and fish, their spawn and larvae. The relationship between annual and seasonal variability of the population and biomass of the both new settlers M. leidyi and B. ovata are discussed.

  20. Efectos de la fibra soluble cáscaras de plantago ovata sobre factores lípidicos de riesgo cardiovascular

    OpenAIRE

    Anguera i Vilà, Anna

    2007-01-01

    TESIS DOCTORALANNA ANGUERA3 Mayo 2007Efectos de la fibra soluble cáscaras de Plantago ovata sobre factores lipídicos de riesgo cardiovascularAntecedentes: La fibra dietética puede reducir el riesgo de enfermedad cardiovascular. No obstante, los efectos de las cáscaras del Plantago ovata (c-Po), una fibra soluble o de las semillas del Plantago ovata (s-Po), una fibra insoluble sobre los factores lipídicos de riesgo cardiovascular son poco conocidos, en especial, en pacientes con enfermedad car...

  1. Inhibitory effect of polyunsaturated aldehydes (PUAs) on the growth of the toxic benthic dinoflagellate Ostreopsis cf. ovata.

    Science.gov (United States)

    Pichierri, Salvatore; Pezzolesi, Laura; Vanucci, Silvana; Totti, Cecilia; Pistocchi, Rossella

    2016-10-01

    Diatoms have been shown to produce and release a wide range of secondary metabolites that mediate interactions between individuals of different species. Among these compounds, different types of fatty acid derived long-chained polyunsaturated aldehydes (PUAs) have been related to multiple functions such as intra- or interspecific signals and adverse effect on the reproduction of marine organisms. Several studies have reported changes on growth, cell membrane permeability, flow cytometric properties and cell morphology in phytoplankton organisms exposed to PUAs, but little information is available on the effect of these compounds on benthic microalgae. Ostreopsis cf. ovata is a toxic benthic dinoflagellate which causes massive blooms along the Mediterranean coasts typically during the late summer period. In this study the effects of three toxic PUAs known to be produced by several algae (2E,4E-decadienal, 2E,4E-octadienal and 2E,4E-heptadienal) on the growth, cytological features and cell morphology of O. cf. ovata were investigated. Our results show a clear decrease of O. cf. ovata growth with longer-chain molecules than with shorter-chain ones, confirmed also by EC50 values calculated at 48h for 2E,4E-decadienal and 2E,4E-octadienal (6.6±1.5, 17.9±2.6μmolL(-1) respectively) and at 72h for 2E,4E-heptadienal (18.4±0.7μmolL(-1)). Moreover, morphological analysis highlighted up to 79% of abnormal forms of O. cf. ovata at the highest concentrations of 2E,4E-decadienal tested (9, 18 and 36μmolL(-1)), a gradual DNA degradation and an increase of lipid droplets with all tested PUAs. Further studies are needed to better clarify the interactions between diatoms and O. cf. ovata, especially on bloom-forming dynamics.

  2. 76 FR 69693 - Tolerance Crop Grouping Program III

    Science.gov (United States)

    2011-11-09

    ... pumila; Filbert (hazelnut), Corylus spp.; Hickory nut, Carya spp.; Macadamia nut (bush nut), Macadamia spp.; Pecan, Carya illinoensis; Walnut, black and English (Persian), Juglans spp. EPA proposes to... (Makino) Rehder, J. ailantifolia Carri re) Hickory nut (Carya cathayensis Sarg., C. glabra (Mill.)...

  3. Ethnoarchaeological Investigations of the Mountain Creek Area, North Central Texas. Volume 2. Historic Farming on the Hogwallow Prairies

    Science.gov (United States)

    1988-05-01

    Carya illinoensis Wangh. Pecan .6 4.2 Carya spp. Hickory 1.1 Aralia spinosa L. Prickly Ash Ulnus rubra Muhl. Slippery Elm Zanthoxylum clava-heralis L...Cercis canadensis L. Redbud .6 Juglans spp. Walnut 1.6 Carya illinoensis Wangh. Pecan .9 4.8 1.6 4.8 Carya spp. Hickory Aralia spinosa L. Prickly Ash...Walnut 3.4 2.1 Carya illinoenis Wangh. Pecan 1.2 10.2 3.6 4.2 5.7 1.4 7.1 Carya spp. Hickory 2.2 Aralia spinosa L. Prickly Ash Ulnus rubra Muhl

  4. The Summary and Developmental Trend of Carya illinoensis%薄壳山核桃研究进展概述

    Institute of Scientific and Technical Information of China (English)

    孙玉栓; 韩应彬

    2013-01-01

    简要介绍了薄壳山核桃生物学与地理生态学特性特性,阐述了薄壳山核桃引种驯化、种苗繁育、栽培技术等方面当前研究进展概况,指出薄壳山核桃研究的发展趋势,以期为六安市的林农经济结构调整和农民致富做出贡献。%The paper introduces biology characteristics and geographic ecological characteristics of Carya illinoensis, it elaborates Carya illinoensis’many aspects of introduced cultivation;the seedling breeding, cultivation techniques, and etc. It also indicates research trend for Carya illinoensis’cultivation and plantation. which becomes make a contribution to the structure adjustment of the agricultural e-conomy and the farmer's well-off.

  5. Estresses hídrico e salino no processo germinativo das sementes de Plantago ovata Forsk. (Plantaginaceae Water and saline stresses on the germination of Plantago ovata Forsk. (Plantaginaceae seeds

    Directory of Open Access Journals (Sweden)

    Marcílio Pereira Sousa

    2008-02-01

    Full Text Available Plantago ovata é espécie medicinal de grande importância cultivada na Índia, no Irã e no Paquistão. As sementes possuem de 20 a 30% de mucilagem utilizada pelas indústrias farmacêuticas nos tratamentos de constipação crônica, câncer intestinal e amebíase. A Índia é o principal exportador mundial das sementes de Plantago ovata, tendo o produto comercial com essas sementes, no Brasil, o nome de Agiolax. O objetivo deste trabalho foi avaliar os possíveis efeitos dos estresses hídrico e salino na germinação de sementes de Plantago ovata. As sementes foram colocadas para germinar em papel umedecido com 15 mL de soluções nos potenciais osmóticos de 0,0; -0,2; -0,4; -0,6; e -0,8 MPa, induzidos com polietileno glicol (PEG 6000, NaCl e CaCl2. O experimento constou de quatro repetições com 50 sementes cada, na temperatura de 25 ºC, na presença de luz. A análise dos resultados permitiu a conclusão de que o estresse hídrico acarreta maior redução na porcentagem e velocidade de germinação das sementes de P. ovata do que o estresse salino, e, independentemente da substância utilizada para indução do estresse, o limite para germinação está entre -0,4 e 0,6 MPa.Plantago ovata is a medicinal species of great importance cultivated in India, Iran and Pakistan.The seeds contain 20 to 30% of mucilage, used by the pharmaceutical industry for the treatment of chronic constipation, intestinal cancer and amoeba. India is the main exporter of Plantago ovata seeds, worldwide. In Brazil, this species has been given the corporate name of Agiolax. This work aimed to evaluate the possible effects of water and salt stresses on the germination of Plantago ovata seeds. The seeds were put to germinate in paper moistened with 15mL of solutions with the potentials of 0.0; -0.2; -0.4; -0.6 and -0.8MPa, induced with polyethylene glycol (PEG 6000, NaCl and CaCl2. Each experiment consisted of 50 seeds, 4 repetitions, and temperature at 25ºC in

  6. INTERACCIONES NUTRIMENTALES Y NORMAS DE DIAGNÓSTICO DE NUTRIMENTO COMPUESTO EN NOGAL PECANERO (Carya illinoensis)

    OpenAIRE

    J. L. García-Hernández; I. Orona-Castillo; G. González-Cervantes; R. D. Valdez-Cepeda; B. Murillo-Amador; E. Troyo-Diéguez; M. Fortis-Hernández; M. A. Segura-Castruita

    2009-01-01

    El cultivo de nogal pecanero (Carya illinoensis) es actualmente uno de los de mayor rentabilidad en el norte de México. En la región conocida como la Comarca Lagunera que comprende parte de los estados de Coahuila y Durango se han reportado diversos desbalances nutrimentales que afectan el rendimiento y productividad de este cultivo. Este estudio fue desarrollado para determinar las normas de diagnóstico de nutrimento compuesto (DNC) y para estudiar las interacciones entre nutrimentos de dich...

  7. Sequencing and characterizing odorant receptors of the cerambycid beetle Megacyllene caryae

    OpenAIRE

    Mitchell, Robert F.; Hughes, David T.; Luetje, Charles W.; Millar, Jocelyn G.; Soriano-Agatón, Flor; Hanks, Lawrence M.; Robertson, Hugh M.

    2012-01-01

    Odorant receptors (Ors) are a unique family of ligand-gated ion channels and the primary mechanism by which insects detect volatile chemicals. Here, we describe 57 putative Ors sequenced from an antennal transcriptome of the cerambycid beetle Megacyllene caryae (Gahan). The male beetles produce a pheromone blend of nine components, and we functionally characterized Ors tuned to three of these chemicals: receptor McOr3 is sensitive to (S)-2-methyl-1-butanol; McOr20 is sensitive to (2S,3R)-2,3-...

  8. Means-End Chain Based Brand Positioning Strategy for Lin’an Carya Cathayensis Sarg

    Institute of Scientific and Technical Information of China (English)

    Lingyan; GAO; Yueli; ZHANG

    2014-01-01

    Based on the theory of Means-End Chain,this paper surveyed value cognition structure of 36 member consumers through the laddering interview. According to the survey,it made an in-depth analysis on brand positioning strategy for Lin’an Carya Cathayensis Sarg,and obtained the existing brand operating model. It is hoped to explore effective strategy of brand positioning for agricultural product enterprises in Zhejiang Province,and accordingly lift core competitiveness of agricultural products of Zhejiang Province.

  9. Adaptation of the autotrophic acetogen Sporomusa ovata to methanol accelerates the conversion of CO2 to organic products

    DEFF Research Database (Denmark)

    Tremblay, Pier-Luc; Höglund, Daniel; Koza, Anna

    2015-01-01

    Acetogens are efficient microbial catalysts for bioprocesses converting C1 compounds into organic products. Here, an adaptive laboratory evolution approach was implemented to adapt Sporomusa ovata for faster autotrophic metabolism and CO2 conversion to organic chemicals. S. ovata was first adapted...... to grow quicker autotrophically with methanol, a toxic C1 compound, as the sole substrate. Better growth on different concentrations of methanol and with H2-CO2 indicated the adapted strain had a more efficient autotrophic metabolism and a higher tolerance to solvent. The growth rate on methanol......, and biochemical studies revealed that the molecular mechanisms responsible for the novel characteristics of the adapted strain were associated with the methanol oxidation pathway and the Wood-Ljungdahl pathway of acetogens along with biosynthetic pathways, cell wall components, and protein chaperones. The results...

  10. Effects of Myrcia ovata Cambess. essential oil on planktonic growth of gastrointestinal microorganisms and biofilm formation of Enterococcus faecalis

    Directory of Open Access Journals (Sweden)

    Cinthya S. Cândido

    2010-10-01

    Full Text Available The essential oil from the leaves of Myrcia ovata Cambess., commonly used in Brazil for the treatment of gastric illnesses, was screened for antimicrobial activity and action in the formation of microbial biofilms by Enterococcus faecalis. The oil was obtained by hydrodistillation using a clevenger-type system. Its chemical composition was analyzed using GC and GC-MS. Both MIC and MBC of the essential oil were determined by broth microdilution techniques and agar dilution method. The essential oil showed antimicrobial activity against E. faecalis, Escherichia coli, Pseudomonas aeruginosa, Salmonella choleraesuis, Staphylococcus aureus, Streptococcus pneumoniae and Candida parapsilosis. The results showed that the essential oil of M. ovata Cambess. was effective against the formation of biofilm by E. faecalis when compared with the control. Four volatile compounds, representing 92.1 % of the oil, were identified and geranial was the major component (50.4 %. At the best of our knowledge, this is the first report of the chemical composition and antimicrobial activity of the essential oil from leaves of M. ovata.

  11. [Effects of understory removal on soil greenhouse gas emissions in Carya cathayensis stands].

    Science.gov (United States)

    Liu, Juan; Chen, Xue-shuang; Wu, Jia-sen; Jiang, Pei-kun; Zhou, Guo-mo; Li, Yong-fu

    2015-03-01

    CO2, N2O and CH4 are important greenhouse gases, and soils in forest ecosystems are their important sources. Carya cathayensis is a unique tree species with seeds used for high-grade dry fruit and oil production. Understory vegetation management plays an important role in soil greenhouse gases emission of Carya cathayensis stands. A one-year in situ experiment was conducted to study the effects of understory removal on soil CO2, N2O and CH4 emissions in C. cathayensis plantation by closed static chamber technique and gas chromatography method. Soil CO2 flux had a similar seasonal trend in the understory removal and preservation treatments, which was high in summer and autumn, and low in winter and spring. N2O emission occurred mainly in summer, while CH4 emission showed no seasonal trend. Understory removal significantly decreased soil CO, emission, increased N2O emission and CH4 uptake, but had no significant effect on soil water soluble organic carbon and microbial biomass carbon. The global warming potential of soil greenhouse gases emitted in the understory removal. treatment was 15.12 t CO2-e . hm-2 a-1, which was significantly lower than that in understory preservation treatment (17.04 t CO2-e . hm-2 . a-1).

  12. Establishment of a SRAP analysis protocol in Carya cathayensis and a comparison among SRAP,RAPD,ISSR analysis protocols%山核桃SRAP体系的建立及与RAPD和ISSR标记的比较

    Institute of Scientific and Technical Information of China (English)

    李元春; 沈林; 曾燕如

    2011-01-01

    In order to have a good molecular marker to reflect inherent genetic characteristics of Lin'an hickory (Carya cathayensis), the genomic DNA extracted from hickory leaves was used to optimize parameters (constituents) included in a sequence-related amplified polymorphism-polymerase chain reaction (SRAP-PCR) protocol run under the following conditions: pre-denaturing at 94 ℃ for 5 min; 5 cycles, each of which denatured at 94 ℃ for 30 s and annealed at 35 ℃ for 30 s with an extension at 72 ℃ for 2 min; 30 cycles,each of which denatured at 94 ℃ for 30 s and annealed at 50 ℃ for 30 s with an extension at 72 ℃ for 2 min;and a final extension at 72 ℃ for 8 min.Then, 15 pairs of primers out of 100 pairs were screened for SRAP analysis and a comparison was made among SRAP, random amplified polymorphic DNA (RAPD), and intersimple sequence repeat(ISSR).The optimized(SRAP-PCR)protocol was as follows: a total volume of 25.00 μL containing 1 × buffer, 0.20 mmol· L-1 dNTPs ( deoxynucleotide triphosphates ), 0.20 μ mol· L-1 p rimers,2.00 mmol· L-1 Mg2+, 33.34 nkat Taq DNA polymerase, and 0.80 mg·L-1 genomic DNA(all at a final concentration).On the average, SRAP, compared to RAPD and ISSR, had the most loci and polymorphic loci amplified by each pair of primers, but SRAP percentages for both polymorphic primer pairs and polymorphic loci were between RAPD and ISSR.The optimized SRAP-PCR reduced the reaction time by half compared with the former protocols.It has been shown that both SRAP and RAPD should be considered when studying hickory.%以山核桃Carya cathayensis 基因组DNA为模板,对聚合酶链式反应(PCR)体系各组分进行了梯度实验,优化出条带清晰、重复性好的相关序列扩增多态性聚合酶链式反应(SRAP-PCR)扩增体系,并筛选了引物.该体系(25.00μL)为:1×缓冲液0.20 mmol·L-1,脱氧核糖核苷酸(dNTPs),0.20μmol·L-1引物,2.00mmol·L-1镁离子(Mg2+),33.34 nkat Taq DNA聚合酶,0.80 mg·L-1基因组DNA

  13. Treatment of water turbidity and bacteria by using a coagulant extracted from Plantago ovata

    Directory of Open Access Journals (Sweden)

    Bahman Ramavandi

    2014-08-01

    Full Text Available A biocoagulant was successfully extracted from Plantago ovata by using an FeCl3-induced crude extract (FCE. The potential of FCE to act as a natural coagulant was tested for clarification using the turbid water of a river. Experimental tests were performed to evaluate the effects of turbidity concentration, coagulant quantity, water pH, and humic acid concentration on the coagulation of water turbidity by FCE. The maximum turbidity removal was occurred at water pH<8. At the optimum dosage of FCE, only 0.8 mg/L of dissolved organic carbon was released to the treated water. An increase in the humic acid led to the promotion of the water turbidity removal. Results demonstrated that the FCE removed more than 95.6% of all initial turbidity concentrations (50–300 NTU. High bacteriological quality was achieved in the treated water. FCE as an eco-friendly biocoagulant was revealed to be a very efficient coagulant for removing turbidity from waters.

  14. Effects of light intensity and temperature on Cryptomonas ovata (Cryptophyceae) growth and nutrient uptake rates

    Science.gov (United States)

    Cloern, James E.

    1977-01-01

    Specific growth rate of Cryptomonas ovata var. palustris Pringsheim was measured in batch culture at 14 light-temperature combinations. Both the maximum growth rate (μm) and optimum light intensity (Iopt) fit an empirical function that increases exponentially with temperature up to an optimum (Topt), then declines rapidly as temperature exceeds Topt. Incorporation of these functions into Steele's growth equation gives a good estimate of specific growth rate over a wide range of temperature and light intensity. Rates of phosphate, ammonium and nitrate uptake were measured separately at 16 combinations of irradiance and temperature and following a spike addition of all starved cells initially took up nutrient at a rapid rate. This transitory surge was followed by a period of steady, substrate-saturated uptake that persisted until external nutrient concentration fell. Substrate-saturated NO3−-uptake proceeded at very slow rates in the dark and was stimulated by both increased temperature and irradiance; NH4+-uptake apparently proceeded at a basal rate at 8 and l4 C and was also stimulated by increased temperature and irradiance. Rates of NH4−-uptake were much higher than NO3−-uptake at all light-temperature combinations. Below 20 C, PO4−3-uptake was more rapid in dark than in light, but was light enhanced at 26 C.

  15. General Classification Handbook for Floodplain Vegetation in Large River Systems. Chapter 1 of Book 2, Collection of Environmental Data

    Science.gov (United States)

    2004-01-01

    tuberculatus WM Amorpha A. fruiticosa WMS Betula B. nigra FF, LF Bidens B. cernua, B. frondosa SMA Carex C. spp.1 SM Carya C. cordiformis, C. illinoensis LF...include pecan ( Carya ), hickory ( Carya ), river birch (Betula), sycamore (Platanus), and red/black oak (Quercus). This general class is most com- mon...near the edge of the floodplain, or out of the floodplain. This general class typi- cally consists of red or white oak (Quercus), hickory ( Carya

  16. (Z)-9-nonacosene-major component of the contact sex pheromone of the beetle Megacyllene caryae.

    Science.gov (United States)

    Ginzel, Matthew D; Moreira, Jardel A; Ray, Ann M; Millar, Jocelyn G; Hanks, Lawrence M

    2006-02-01

    Male Megacyllene caryae (Gahan) (Coleoptera: Cerambycidae) respond to females only after touching them with their antennae, indicating that mate recognition is mediated by a contact sex pheromone. Gas chromatography-mass spectrometry analyses of whole-body solvent extracts of male and female M. caryae revealed substantial differences in hydrocarbon profiles, with nearly half of the compounds in the extracts from females being absent from those of males. Biological activities of fractions of crude extracts of females, and reconstructed blends of the most abundant straight-chain (nC(27), nC(28), nC(29)), methyl-branched (2Me-C(26), 9Me-C(29), 11, 13, 15Me-C(29)), and unsaturated (Z9:C(29), Z13:C(29), Z14:C(29), Z13:C(31), Z14:C(31), Z15:C(31)) compounds in extracts of females were tested in arena bioassays, assessing four steps in the mating behavior sequence of males (orientation, arrestment, body alignment, mounting and attempting to couple the genitalia). Males showed limited response to dead females treated with fractions of the crude extract or blends of synthetic straight-chain and methyl-branched alkanes, but responded strongly to the blend of synthetic monoenes. Further trials determined that the complete sequence of mating behaviors, up to and including coupling the genitalia, was elicited by Z9:C(29) alone. Z9:C(29) is a homolog of the contact pheromone (Z9:C(25)) of the congener M. robiniae (Förster). Previous work with M. robiniae suggested that wipe sampling of cuticular hydrocarbons of females by solid phase microextraction yielded a more representative profile of components actually encountered by a male's antennae, and so provided a more readily interpretable profile of potential semiochemicals present in the wax layer than does solvent extraction. We tested this hypothesis by comparing hydrocarbon profiles of female M. caryae by the two sampling methods. Z9:C(29) was the only compound among the dominant hydrocarbons that was present in higher

  17. Effects of fluidized bed combustion residue on pecan seedling growth and nutrient content. [Carya illinoensis

    Energy Technology Data Exchange (ETDEWEB)

    Edwards, J.H.; White, A.W. Jr.; Bennett, O.L.

    1985-01-01

    Fluidized bed combustion residue from a calcitic limestone source (FBCRC), a by-product of scrubbing SO/sub 2/ from fossil fuel fired boilers using the FBC technique was evaluated as a source of calcium for pecan (Carya illinoensis (Wang.) K. Koch) seedlings. Fluidized bed combustion residue produced following injection of calcitic limestone into the combustion chamber was more effective in neutralizing soil acidity and increasing extractable soil Ca levels than agricultural calcitic limestone. The Ca concentration in the pecan leaves was increased linearly by Ca rates for both 12- and 24-week growth periods, but stem and petiole Ca concentration was increased linearly for the second 12-week growth period. Macronutrient concentrations were affected by Ca rates for both 12- and 24-week growth periods, but no effect was observed with Ca source. The primary difference was between the control and all other Ca rates.

  18. Characterization of Carya illinoiensis and Juglans regia oils obtained by different extraction systems

    Directory of Open Access Journals (Sweden)

    Tainara Costa-Singh

    2015-05-01

    Full Text Available It is extremely important to evaluate the extraction processes of vegetable oils used in food, considering that the nuts are rich sources of triacylglycerols. Thus, the present study aimed at comparing the methods of solvent extraction and extraction by pressing of the lipid fractions of walnut (Juglans regia and pecan nut (Carya illinoensis, in order to elucidate their influence on the content of bioactive substances. The samples were analyzed regarding fatty acid profile, tocopherols, phytosterols, carotenoids, and phenolic compounds, presenting relevant quantities of these bioactive substances. It was found that the extraction of oils by pressing minimized degradation of tocopherol when compared to solvent extraction. However, solvent extraction is more efficient to extract bioactive compounds such as phytosterols, carotenoids, and phenolic compounds.

  19. Sequencing and characterizing odorant receptors of the cerambycid beetle Megacyllene caryae.

    Science.gov (United States)

    Mitchell, Robert F; Hughes, David T; Luetje, Charles W; Millar, Jocelyn G; Soriano-Agatón, Flor; Hanks, Lawrence M; Robertson, Hugh M

    2012-07-01

    Odorant receptors (Ors) are a unique family of ligand-gated ion channels and the primary mechanism by which insects detect volatile chemicals. Here, we describe 57 putative Ors sequenced from an antennal transcriptome of the cerambycid beetle Megacyllene caryae (Gahan). The male beetles produce a pheromone blend of nine compovnents, and we functionally characterized Ors tuned to three of these chemicals: receptor McOr3 is sensitive to (S)-2-methyl-1-butanol; McOr20 is sensitive to (2S,3R)-2,3-hexanediol; and McOr5 is sensitive to 2-phenylethanol. McOr3 and McOr20 are also sensitive to structurally-related chemicals that are pheromones of other cerambycid beetles, suggesting that orthologous receptors may be present across many cerambycid species. These Ors are the first to be functionally characterized from any species of beetle and lay the groundwork for understanding the evolution of pheromones within the Cerambycidae.

  20. Compositional changes of Australia-grown Western Schley pecans [Carya illinoinensis (Wangenh.) K. Koch] during maturation.

    Science.gov (United States)

    Singanusong, Riantong; Mason, Richard L; D'Arcy, Bruce R; Nottingham, Stephen M

    2003-01-15

    Changes in composition during the maturation of Western Schley pecans [Carya illinoinensis(Wangenh.) K. Koch] grown in Australia were investigated. Pecans of different maturity levels were collected at monthly intervals between March and June in 1999 and 2000 and analyzed for the concentrations of moisture, total lipid, sucrose, raffinose, protein, and the minerals aluminum, boron, calcium, copper, iron, potassium, magnesium, manganese, sodium, phosphorus, sulfur, and zinc. Moisture, total lipid, and calcium contents changed significantly (p < 0.05) with harvest time and maturity, whereas the other components did not. Western Schley pecans grown in Australia should be harvested after the shuck has opened and it is either green or brown in color to maximize total lipid content and quality. This occurred after May 11 in 1999 and after May 17 in 2000.

  1. Dissecting the Genetic Basis for Seed Coat Mucilage Heteroxylan Biosynthesis in Plantago ovata Using Gamma Irradiation and Infrared Spectroscopy

    Science.gov (United States)

    Tucker, Matthew R.; Ma, Chao; Phan, Jana; Neumann, Kylie; Shirley, Neil J.; Hahn, Michael G.; Cozzolino, Daniel; Burton, Rachel A.

    2017-01-01

    Seeds from the myxospermous species Plantago ovata release a polysaccharide-rich mucilage upon contact with water. This seed coat derived mucilage is composed predominantly of heteroxylan (HX) and is utilized as a gluten-free dietary fiber supplement to promote human colorectal health. In this study, a gamma-irradiated P. ovata population was generated and screened using histological stains and Fourier Transform Mid Infrared (FTMIR) spectroscopy to identify putative mutants showing defects in seed coat mucilage HX composition and/or structure. FTMIR analysis of dry seed revealed variation in regions of the IR spectra previously linked to xylan structure in Secale cereale (rye). Subsequent absorbance ratio and PCA multivariate analysis identified 22 putative mutant families with differences in the HX IR fingerprint region. Many of these showed distinct changes in the amount and subtle changes in structure of HX after mucilage extrusion, while 20% of the putative HX mutants identified by FTMIR showed no difference in staining patterns of extruded mucilage compared to wild-type. Transcriptional screening analysis of two putative reduced xylan in mucilage (rxm) mutants, rxm1 and rxm3, revealed that changes in HX levels in rxm1 correlate with reduced transcription of known and novel genes associated with xylan synthesis, possibly indicative of specific co-regulatory units within the xylan biosynthetic pathway. These results confirm that FTMIR is a suitable method for identifying putative mutants with altered mucilage HX composition in P. ovata, and therefore forms a resource to identify novel genes involved in xylan biosynthesis. PMID:28377777

  2. Effect of tungstate on acetate and ethanol production by the electrosynthetic bacterium Sporomusa ovata

    DEFF Research Database (Denmark)

    Ammam, Fariza; Tremblay, Pier-Luc; Lizak, Dawid Mariusz

    2016-01-01

    successfully converted to their corresponding alcohols 1-propanol and 1-butanol by S. ovata during gas fermentation. Increasing tungstate concentration enhanced conversion efficiency for both propionate and butyrate. Gene expression analysis suggested that tungsten-containing aldehyde ferredoxin...... oxidoreductases (AORs) and a tungsten-containing formate dehydrogenase (FDH) were involved in the improved biosynthesis of acetate, ethanol, 1-propanol, and 1-butanol. AORs and FDH contribute to the fatty acids re-assimilation pathway and the Wood-Ljungdahl pathway, respectively. This study presented here shows...

  3. Elaboration and sensory evaluation of pecan nut butter (Carya Illinoensis K suitable for people with chronic diseases

    Directory of Open Access Journals (Sweden)

    L. E. Chacón-Garza

    2016-12-01

    Full Text Available The objective of the present work was to elaborate two butters with pecan nut (Carya Illinoensis K, suitable for people with chronic degenerative diseases and with cardio vascular risk. Because are these diseases are one of the leading causes of death in the world. The pecan nut (Carya Illinoensis K is a food rich in monounsaturated fatty acids (MUFAs such as oleic acid and polyunsaturated fatty acids (PUFAs such as linoleic acid, which have been shown to be effective in lowering LDL cholesterol levels. A sensorial test was also carried out to see the grade level of this product, finding that it was well accepted by potential consumers. The parameters that most influenced the choice and acceptability of butter were the appearance and consistency.

  4. Influence of yield on in vitro accumulation of aflatoxins in pecan (Carya illinoensis (Wang.) K. Koch) nutmeats.

    OpenAIRE

    McMeans, J L

    1983-01-01

    Pecans were harvested from trees (Carya illinoensis (Wang.) K. Koch) in November of 1977 through 1979. Kernel meals from high-, medium-, and low-yielding trees were inoculated with a spore suspension of Aspergillus parasiticus and incubated for 7 days at 25 degrees C. Significant differences in aflatoxin accumulation were found among the three substrates, with a direct correlation between high aflatoxin concentration and tree yield.

  5. Influence of yield on in vitro accumulation of aflatoxins in pecan (Carya illinoensis (Wang.) K. Koch) nutmeats.

    Science.gov (United States)

    McMeans, J L

    1983-02-01

    Pecans were harvested from trees (Carya illinoensis (Wang.) K. Koch) in November of 1977 through 1979. Kernel meals from high-, medium-, and low-yielding trees were inoculated with a spore suspension of Aspergillus parasiticus and incubated for 7 days at 25 degrees C. Significant differences in aflatoxin accumulation were found among the three substrates, with a direct correlation between high aflatoxin concentration and tree yield.

  6. 山核桃属部分种的核型分析%Karyotypes of Three Carya Nutt. Species

    Institute of Scientific and Technical Information of China (English)

    吕芳德; 杨帆; 张日清

    2002-01-01

    对山核桃属中的美国山核桃Carya illinoensis、浙江山核桃Carya cathayensis、云南山核桃Carya tonkinensis的核型进行了研究.结果表明:浙江山核桃和云南山核桃染色体数目为32,核型类型为2A,浙江山核桃核型公式为K(2n)=8sm+22m+2T,云南山核桃核型公式K(2n)=8sm+22m(SAT)+2T;美国山核桃染色体数目为32,核型类型为2B,核型公式为K(2n)=10sm+20m+2T.根据分析结果,讨论了它们的亲缘关系、进化地位及分类等问题.

  7. TECHNOLOGICAL CHARACTERISTICS OF THE WOOD OF Luehea divaricata, Carya illinoinensis AND Platanus x acerifolia WHEN SUBMITTED TO BENDING

    Directory of Open Access Journals (Sweden)

    Darci Alberto Gatto

    2009-10-01

    Full Text Available This work was conducted with the purpose of investigating bending characteristics of the wood of Platanus x acerifolia (Ait. Willd., Luehea divaricata Mart. et Zucc and Carya illinoinensis (Wangenh K. Koch. Such species were collected from non-managed forests located in Depressão Central and Encosta Superior do Nordeste, Rio Grande do Sul, Brazil. Five representative adult trees from each species per studied area were cut down, corresponding to a total of thirty trees. From the trunk, a 2.5 m long log was taken and, afterwards, transported to a sawmill for processing. A central 8 cm thick plank was sawn, from which samples for bending were manufactured. The samples were conditioned in standard room to a moisture content of approximately 14%. Then, the samples were placed in boiling water during 35 minutes and bended in rays of 16 and 21cm. For the qualification of the bending defects, the methodology presented by Vorreiter (1958 was used. Results showed that the wood of Carya illinoinensis (Wangenh K. Koch had the best bending characteristics when compared to the other two species, independently of the ray bending tested. It seems that the ring porosity, characteristic of the Carya illinoinensis wood, contributed to the result. On the other hand, the wood of Platanus x acerifolia (Ait. Willd. and Luehea divaricata Mart. et Zucc, with diffuse porosity and larger parenchyma proportion, presented more defective pieces.

  8. Transmission of the Aegilops ovata chromosomes carrying gametocidal factors in hexaploid triticale (×Triticosecale Wittm.) hybrids.

    Science.gov (United States)

    Kwiatek, M; Majka, M; Ślusarkiewicz-Jarzina, A; Ponitka, A; Pudelska, H; Belter, J; Wiśniewska, H

    2016-08-01

    The main aim of this work was to induce the chromosome rearrangements between Aegilops ovata (UUMM) and hexaploid triticale (AABBRR) by expression of the gametocidal factor located on the chromosome 4M. The Aegilops ovata × Secale cereale (UUMMRR) amphiploids and triticale 'Moreno' were used to produce hybrids by reciprocal crosses. Chromosome dynamics was observed in subsequent generations of hybrids during mitotic metaphase of root meristems and first metaphase of meiosis of pollen mother cells. Chromosomes were identified by genomic in situ hybridisation (GISH) and fluorescence in situ hybridisation (FISH) using pTa71, pTa791, pSc119.2 and pAs1 DNA probes. It has been shown that the origin of the genetic background had an influence on Aegilops chromosome transmission. Moreover, it has been reported that the preferential transmission of chromosome 4M appeared during both androgenesis and gynogenesis. It is also hypothesised that the expression of the triticale Gc gene suppressor had an influence on the semi-fertility of hybrids but did not inhibit the chromosome rearrangements. This paper also describes the double haploid production, which enabled to obtain plants with two identical copies of triticale chromosomes with translocations of Aegilops chromatin segments.

  9. Physically (CO2) activated hydrochars from hickory and peanut hull: preparation, characterization, and sorption of methylene blue, lead, copper, and cadmium

    Science.gov (United States)

    The effects of carbon dioxide activation temperature (600-900 degree Celsius °C) and time (1 and 2 h) on the physicochemical and sorptive characteristics of hickory and peanut hull hydrochars were investigated. The extent of burn-off increased with increasing activation times and temperatures, and r...

  10. Contrasting responses to drought of forest floor CO2 efflux in a loblolly pine plantation and a nearby Oak-Hickory forest

    Science.gov (United States)

    S. Palmroth; Chris A. Maier; Heather R. McCarthy; A. C. Oishi; H. S. Kim; Kurt H. Johnsen; Gabrial G. Katul; Ram Oren

    2005-01-01

    Forest floor C02 efflux (Fff) depends on vegetation type, climate, and soil physical properties. We assessed the effects of biological factors on Fff by comparing a maturing pine plantation (PP) and a nearby mature Oak-Hickory-type hardwood forest (HW). Fff was measured...

  11. Growth and competitive abilities of the federally endangered Lindera melissifolia and the potentially invasive Brunnichia ovata in varying densities, hydrologic regimes, and light availabilities

    Science.gov (United States)

    Tracy S. Hawkins; Nathan Schiff; A. Dan Wilson; Theodor D. Leininger; Margaret S. Devall

    2016-01-01

    Brunnichia ovata (Walter) Shinners is a native, perennial, woody vine with the potential to become an aggressive competitor of the federally endangered shrub Lindera melissifolia (Walt.) Blume. Our study simulated habitat disturbances to hydrologic regime and light availability that may occur naturally, or through active...

  12. Cross-adaptation to cadmium stress in Plantago ovata by pre-exposure to low dose of gamma rays: Effects on metallothionein and metal content.

    Science.gov (United States)

    Ghoshal, Nirmalya; Talapatra, Shonima; Talukder, Pratik; Sengupta, Mandar; Ray, Suman Kumar; Chakraborty, Anindita; Raychaudhuri, Sarmistha Sen

    2015-08-01

    To investigate the effects of gamma pre-exposure on cadmium accumulation in Plantago ovata seedlings. Metallothionein (MT) localization was also studied following Cadmium (Cd) treatment in P. ovata. DNA damage was determined by alkaline comet assay. MT gene and protein expression were studied by real-time polymerase chain reaction and flow cytometry, respectively, in root and shoot tissues. Metal accumulation (Cd, zinc [Zn], iron [Fe]) was evaluated by Atomic Absorption Spectroscopy. Cd treatment decreased seed germination rate, biomass and free radical scavenging activity and increased DNA damage in a dose-dependent manner. When P. ovata seeds were pre- exposed to 5 Gy gamma dose (prior to Cd treatment) seed germination rate, biomass and free radical scavenging activity increased significantly. MT genes (PoMT1, PoMT2 and PoMT3) and MT protein expression enhanced when 5 Gy gamma-irradiated seeds were grown in Cd containing medium and Cd accumulation also increased in a dose-dependent manner. Higher Cd accumulation in P. ovata seedlings may be attributed to the upregulation of PoMT genes in gamma pretreated seedlings. Localization of metallothionein in cytosol and nucleus indicated its positive role against Cd-mediated cytotoxic and genotoxic effects.

  13. Antioxidant Properties of Pecan Nut [Carya illinoinensis (Wangenh. C. Koch] Shell Infusion

    Directory of Open Access Journals (Sweden)

    Fett, Roseane

    2009-09-01

    Full Text Available The nutritional composition of Pecan nut [Carya illinoinensis (Wangenh. C. Koch] shells and the total phenolic and condensed tannin contents of Pecan nut shell infusion were determined and the antioxidant activity of the infusion was evaluated through ABTS, DPPH and β-carotene/linoleic acid systems. The shell presented high fiber content (48% ± 0.06, the total phenolic content ranged from 116 to 167 mg GAE/g and the condensed tannin content was between 35 and 48 mg CE/g. The antioxidant activity varied from 1112 and 1763 μmol TEAC/g in the ABTS system. In the DPPH method, the antioxidant activity was from 305 to 488 mg TEAC/g (30 minutes reaction and from 482 to 683 mg TEAC/g (24 h reaction. The oxidation inhibition percentage obtained in the β-carotene/linoleic acid system varied from 70 to 96%. The results indicated the high phenolic content and antioxidant activity of Pecan nut shell infusion.La composición nutricional de la cáscara de nuez Pecana [Carya illinoinensis (Wangenh. C. Koch] y los contenidos de fenoles totales y de taninos condensados de la infusión de la cáscara de nuez Pecana se determinaron en este trabajo. La actividad antioxidante de la infusión se evaluó a través de los sistemas ABTS, DPPH y β-caroteno/ácido linoleico. La cáscara presentó un contenido elevado de fibras (48% ± 0,06, el contenido de fenoles totales varió de 116 a 167 mg GAE/g y el de taninos condensados se encontró entre 35 y 48 mg CE/g. La actividad antioxidante varió entre 1112 y 1763 μmol TEAC/g en el sistema ABTS. Por el método DPPH, la actividad antioxidante fue de 305 a 488 mg TEAC/g (30 minutos de reacción y de 482 a 683 mg TEAC/g (24 h de reacción. El porcentaje de inhibición de la oxidación que se obtuvo en el sistema β -caroteno/ácido linoleico varió de 70 a 96%. Los resultados indicaron un elevado contenido de fenoles y una elevada actividad antioxidante para la infusión de la cáscara de nuez Pecana.

  14. Analysis on the Regional Brand Operation Mode for Carya Cathayensis——A Case Study of Lin’an in Zhejiang

    Institute of Scientific and Technical Information of China (English)

    Xiaoling; TU; Yueli; ZHANG

    2013-01-01

    Lin’an City has a long history of growing,processing and selling Carya Cathayensis,a traditional special local product for which the city is well known.In recent years,Lin’an Carya Cathayensis gives full play to the industry cluster advantages and gains the reputation of"regional name brand of Zhejiang".However,it faces the predicament of regional brand operation,so industry transformation and upgrading as well as intensive farming for this brand are inevitable and necessary.This paper analyzes the current regional brand operation mode of Carya Cathayensis in Lin’an to find out that the growth of this brand is constrained by messy business entities,weak brand protection effect,significant lemon market effect,insufficient industry association efforts and wanting brand culture construction,thus it puts forward the conception of a business alliance based regional brand operation mode for the Carya Cathayensis in Lin’an.The results of this study shall provide theoretical guidance and empirical basis for the marketing practice of the regional brand of Carya Cathayensis in Lin’an.

  15. Antimycobacterial activity of Juglans regia, Juglans mollis, Carya illinoensis and Bocconia frutescens.

    Science.gov (United States)

    Cruz-Vega, Delia Elva; Verde-Star, María Julia; Salinas-González, Noé; Rosales-Hernández, Bibiana; Estrada-García, Iris; Mendez-Aragón, Patricia; Carranza-Rosales, Pilar; González-Garza, María Teresa; Castro-Garza, Jorge

    2008-04-01

    Mycobacterium tuberculosis is a serious worldwide health threat, killing almost 2 million people per year. Alternative antimycobacterial drugs are urgently needed; studies have shown that medicinal plants traditionally used to treat respiratory diseases are a potential source of compounds to treat tuberculosis. This paper studied the antimycobacterial activity of 28 extracts from four different plant species that have been used in traditional Mexican medicine to treat tuberculosis. Bark and leaf crude extracts of Juglans regia L., Juglans mollis Engelm., Carya illinoensis (Wangenh) K. Koch and Bocconia frutescens showed in vitro anti-M. tuberculosis activity. Hexane bark extracts from C. illinoensis, J. mollis and J. regia were the most active with a minimal inhibitory concentration (MIC) of 31, 50 and 100 microg/mL, respectively. Ethanol bark extracts from C. illinoensis and J. mollis showed activity at 100 and 125 microg/mL, respectively. Leaf extracts had the lowest activity. Methanol and hexane leaves extracts from B. frutescens had a MIC of 125 microg/mL. None of the aqueous extracts showed antimycobacterial activity.

  16. Meloidogyne partityla on Pecan Isozyme Phenotypes and Other Host.

    Science.gov (United States)

    Starr, J L; Tomaszewski, E K; Mundo-Ocampo, M; Baldwin, J G

    1996-12-01

    Meloidogyne sp. from five pecan (Carya illinoensis) orchards in Texas were distinctive in host range and iszoyme profiles from common species of Meloidogyne but were morphologically congruent with Meloidogyne partityla Kleynhans, a species previously known only in South Africa. In addition to pecan, species of walnut (Juglans hindsii and J. regia) and hickory (C. ovata) also were hosts. No reproduction was observed on 15 other plant species from nine families, including several common hosts of other Meloidogyne spp. Three esterase phenotypes and two malate dehydrogenase phenotypes of M. partityla were identified by polyacrylamide gel electrophoresis. Each of these isozyme phenotypes was distinct from those of the more common species M. arenaria, M. hapla, M. incognita, and M. javanica.

  17. Archaeological Testing of the Bauman Site (23STG158) Ste. Genevieve County, Missouri.

    Science.gov (United States)

    1985-05-01

    with exception of the absence of black walnut, hazelnut and acorn remains. Identified remains include those of Carya illinoensis (pecan), Carya spp...spp.), black walnut (Juglans nigra), hickory nut ( Carya spp.), maize (Zea mays), knotweed (Polygonum erectum), and morning glory (Convolvulaceae). While...shagbark group), Carya spp. (kingnut group), and Juglandaceae (Table 24). Differen- " tiations among Carya taxa were made employing Lopinot’s (1983

  18. Toxin production, growth kinetics and molecular characterization of Ostreopsis cf. ovata isolated from Todos os Santos Bay, tropical southwestern Atlantic.

    Science.gov (United States)

    Mendes, Maria Cristina de Q; Nunes, José Marcos C; Menezes, Mariângela; Fraga, Santiago; Rodríguez, Francisco; Vázquez, José A; Blanco, Juan; Franco, José M; Riobó, Pilar

    2017-08-08

    The toxin profile and hemolytic activity of a strain of Ostreopsis cf. ovata (UFBA013) isolated from Todos os Santos Bay (northeastern Brazil) were evaluated under different levels of N and P. Phylogenetic analyses based on ITS rDNA region (ITS1-5.8S-ITS2) placed UFBA013 within the Atlantic/Mediterranean/Pacific clade of O. cf. ovata. Growth experiments were conducted in f/2 medium modified by adding N and P (P: 0-36 μM; N: 0-882 μM). The growth kinetics was adequately described by logistic equations. The best growth (highest Gm) was recorded under levels of N/P = 0/18, 129/5 and 441/36, while one of the lowest Gm was obtained under P-depletion. The maximum and specific maximum growth rates (as vm; cells mL(-1) d(-1) and μm; d(-1)) were achieved with N limitation (N/P = 441/36) and P-limitation/depletion (753/5.3 and 441/0) and are the highest values reported in the literature, most similar to isolates from Pacific and Mediterranean areas. The control experiment (N/P = 441/18) also yielded similar values to those from some Mediterranean isolates, but higher than formerly reported for Brazilian isolates. In all conditions assayed, no palytoxin (PLTX) was detected. The ovatoxins (OVTXs) a, b, c, d and e did not show significant differences in cell quota between exponential and stationary phases. A significant relationship was detected between OVTXs concentration and hemolytic activity. Copyright © 2017 Elsevier Ltd. All rights reserved.

  19. Antioxidant activity and high-performance liquid chromatographic analysis of phenolic compounds during in vitro callus culture of Plantago ovata Forsk. and effect of exogenous additives on accumulation of phenolic compounds.

    Science.gov (United States)

    Talukder, Pratik; Talapatra, Shonima; Ghoshal, Nirmalya; Sen Raychaudhuri, Sarmistha

    2016-01-15

    Plantago ovata, commonly called psyllium, is known to be a rich source of polyphenolic compounds. The present study was aimed at determining polyphenol content and studying their antioxidant activities in P. ovata during in vitro callus culture. An attempt was also made to enhance polyphenol content using external additives. The role of PAL gene in polyphenol accumulation was also studied. The study indicated the presence of significant amounts of polyphenols, including flavonoids, in P. ovata callus. A gradual increase in polyphenol and flavonoid content was observed up to the third passage (63 days) of callus culture, which declined at the next passage. The third-passage callus showed highest antioxidant activity. High-performance liquid chromatographic results indicated the presence of high amounts of gallic acid and rutin in P. ovata calli; however, other polyphenols were also present but to a lesser extent. Additive supplementation was effective in enhancing polyphenol production and in increasing antioxidant activity in P. ovata callus. The present research reported accumulation of polyphenols in callus culture of P. ovata, which could be applied to isolation of polyphenols for various beneficial purposes. It also indicated enhancement in the production of several polyphenols and also an increase in antioxidant activity in the additive-treated callus. © 2015 Society of Chemical Industry.

  20. 美国山核桃光合作用初探%Preliminary study of photosynthesis in Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    黄菁; 吕芳德; 和红晓

    2011-01-01

    利用Li-6400便携式光合作用测定仪,研究了美国山核桃田间条件下的光合特性,结果表明:净光合速率为双峰曲线,首峰值大于次峰值,有明显的"午休"现象,日最大峰值出现在10:00前后;其蒸腾速率的日变化为单峰曲线,最高值出现在中午12:00前后;通过光合速率与生理、环境因子进行分析得出,影响日变化的主要因子为气孔导度、胞间CO2浓度和光合有效辐射.%With the international advance Li-6400 portable photosynthesis, the photosynthetic characteristics of Carya illinoensis were studied.The main results were obtained as follows:Diurnal change in net photosynthetic rate(Pn) in Carya illinoensis was a "none-drop" bimodal curve.The first peak was higher more than the secondary peak.There was obvious "midday rest".The peak appeared at 10:00.Diurnal change of transpiration rate (Tr) showed only one peak.The peak appeared at 12:00.Analysis results in net photosynthetic rate, physical factors and environmental factors show that main influencing factors of net photosynthetic rate in Carya illinoensis were cond,Ci,PAR.

  1. The effects of gamma irradiation on the vitamin E content and sensory qualities of pecan nuts ( Carya illinoensis)

    Science.gov (United States)

    Taipina, Magda S.; Lamardo, Leda C. A.; Rodas, Maria A. B.; del Mastro, Nelida L.

    2009-07-01

    Pecan nuts ( Carya illinoensis) were treated with gamma irradiation and evaluated for changes in vitamin E content and sensory properties. Irradiation at 1 and 3 kGy resulted in no changes in vitamin E content measured as α-tocopherol equivalents by a colorimetric method. A trained sensory panel found that irradiation at 1 kGy produced no significant changes in appearance, aroma, texture and flavor attributes. The vitamin E content of irradiated pecan nuts remained stable, but from the point of view of sensory quality a dose of merely 1 kGy can be considered as recommendable.

  2. Production Situation of Carya illinoensis in USA%美国薄壳山核桃生产概况

    Institute of Scientific and Technical Information of China (English)

    耿国民; 周久亚

    2009-01-01

    The natural distribution,cultivation history,cultivation types,cultivars,field management,yield and sales status of Carya illinoensis in USA were summarized so as to provide references and be help for the research and development of C.illinoensis in China.%概述了薄壳山核桃在美国的自然分布、栽培历史、生产栽培类型、品种、田间管理以及产量和销售状况,以期为我国的薄壳山核桃生产发展提供借鉴与帮助.

  3. The effects of gamma irradiation on the vitamin E content and sensory qualities of pecan nuts (Carya illinoensis)

    Energy Technology Data Exchange (ETDEWEB)

    Taipina, Magda S. [Nuclear and Energy Research Institute, IPEN-CNEN/SP, Av. Prof. L. Prestes 2242, 05508-000 Sao Paulo (Brazil); Lamardo, Leda C.A.; Rodas, Maria A.B. [Instituto Adolfo Lutz, Av. Dr. Arnaldo 355, 01246-902 Sao Paulo, SP (Brazil); Mastro, Nelida L. del [Nuclear and Energy Research Institute, IPEN-CNEN/SP, Av. Prof. L. Prestes 2242, 05508-000 Sao Paulo (Brazil)], E-mail: nlmastro@ipen.br

    2009-07-15

    Pecan nuts (Carya illinoensis) were treated with gamma irradiation and evaluated for changes in vitamin E content and sensory properties. Irradiation at 1 and 3 kGy resulted in no changes in vitamin E content measured as {alpha}-tocopherol equivalents by a colorimetric method. A trained sensory panel found that irradiation at 1 kGy produced no significant changes in appearance, aroma, texture and flavor attributes. The vitamin E content of irradiated pecan nuts remained stable, but from the point of view of sensory quality a dose of merely 1 kGy can be considered as recommendable.

  4. Composition of pecan cultivars Wichita and Western Schley [Carya illinoinensis (Wangenh.)K. Koch] grown in Australia.

    Science.gov (United States)

    Wakeling, L T; Mason, R L; D'Arcy, B R; Caffin, N A

    2001-03-01

    Pecans from the cultivars Wichita and Western Schley [Carya illinoinensis (Wangenh.) K. Koch] collected over three years were analyzed for the following constituents: total lipid content; fatty acid profiles; sucrose content; protein; total dietary fiber; the minerals magnesium, calcium, potassium, sulfur, phosphorus, boron, copper, iron, manganese, sodium, zinc, and aluminum; vitamin C; and lipase and lipoxygenase activities. Year of harvest and cultivar had little effect on the composition of the pecans. Overall, protein content was the only constituent that differed between pecans grown in Australia and those grown in the United States. This difference is probably related to differences in growing location and horticultural practices between the two countries.

  5. Propagation techniques of Carya illinoensis%薄壳山核桃繁殖技术

    Institute of Scientific and Technical Information of China (English)

    佟海英; 吴文龙; 闾连飞; 李维林

    2005-01-01

    薄壳山核桃(Carya illinoensis k.koch)又名长山核桃、美国山核桃,是世界著名的干果之一。其果实营养丰富,适于生食、炒食或制作糕点。种仁是炸油的好原料,油中的脂肪酸主要为不饱和脂肪酸,是一种高级食用油。薄壳山核桃树干通直,木材坚固强韧,纹理致密,富有弹性,不易翘裂,也是优良的用材树种。薄壳山核桃生长迅速,树体高大,枝叶茂密,树姿优美,又是很好的城乡绿化树种。薄壳山核桃于1900年左右引入我国,先后在江苏的江阴、南京,浙江的杭州,福建的莆田等地栽植。目前引种范围较广,北至北京,南至海南岛都有引种,但以江苏、浙江、福建和安徽等地较多。

  6. Archeological Survey of Selected Fish and Wildlife Management Areas at Pomme de Terre and Stockton Lakes, Dade, Hickory, and Polk Counties, Missouri

    Science.gov (United States)

    1989-01-01

    Selected Fish and Wildlife Management Areas at Pomme de Terre and Stockton Lakes, Dade, Hickory, and Polk Counties, Missouri Contract No. DACW41-81-C...Jackson _________________________56 1989 907 0J) O . ARCHEOLOGICAL SURVEY OF SELECTED FISH AND WILDLIFE MANAGEMENT AREAS AT POMME DE TERRE AND...NO. NO. ACCESSION NO. 11. TITLE (Include Securrty Classification) Archeological Survey of Selected Fish and Wildlife Management Areas at Pomme de Terre

  7. Archaeological Investigations of the Little Cypress Bayou Site (3CT50) Crittenden County, Arkansas. Volume 2 - Appendices

    Science.gov (United States)

    1986-01-01

    Swanton 1946). Pecan ( Carya illinoensis ): Pecan shell was recovered from 32 features; the features also yielded the remains of other nut foods. 111-10...Scientific Common Acer sp. Maple Arundinaria gigantea Cane Asteraceae Composite Family Carya sp. Hickory Celtis sp. Hackberry or Sugarberry...presented below. 111-9 Hickory ( Carya sp.): Table 111-4 presents a summary of all nut remains recovered from various features and proveniences. It will be

  8. Tradition and Culture Change in the Oklahoma Delaware Big House Community: 1867-1924.

    Science.gov (United States)

    1981-01-01

    Viburnum prunifolium), pecans ( Carya adult Delaware settlers. Nor is their use of the illinoensis ), persimmon (Diospyro virginiana), cabin divergent from...preparations Sycamore Platanus occidentails xaxakw "tree" Chips of heartwood boiled to make a tea Pecans Carya illinoensis KIT:m Nuts eaten in fall I...Bark used to sweeten and preserve fat; inner bark used to repair baskets Hickory Carya hickori t~tpan%.ma;i "bitter nut tree" Used in basketry and for

  9. Toxicity and Growth Assessments of Three Thermophilic Benthic Dinoflagellates (Ostreopsis cf. ovata, Prorocentrum lima and Coolia monotis) Developing in the Southern Mediterranean Basin

    Science.gov (United States)

    Ben-Gharbia, Hela; Yahia, Ons Kéfi-Daly; Amzil, Zouher; Chomérat, Nicolas; Abadie, Eric; Masseret, Estelle; Sibat, Manoella; Zmerli Triki, Habiba; Nouri, Habiba; Laabir, Mohamed

    2016-01-01

    Harmful benthic dinoflagellates, usually developing in tropical areas, are expanding to temperate ecosystems facing water warming. Reports on harmful benthic species are particularly scarce in the Southern Mediterranean Sea. For the first time, three thermophilic benthic dinoflagellates (Ostreopsis cf. ovata, Prorocentrum lima and Coolia monotis) were isolated from Bizerte Bay (Tunisia, Mediterranean) and monoclonal cultures established. The ribotyping confirmed the morphological identification of the three species. Maximum growth rates were 0.59 ± 0.08 d−1 for O. cf. ovata, 0.35 ± 0.01 d−1 for C. monotis and 0.33 ± 0.04 d−1 for P. lima. Toxin analyses revealed the presence of ovatoxin-a and ovatoxin-b in O. cf. ovata cells. Okadaic acid and dinophysistoxin-1 were detected in P. lima cultures. For C. monotis, a chromatographic peak at 5.6 min with a mass m/z = 1061.768 was observed, but did not correspond to a mono-sulfated analogue of the yessotoxin. A comparison of the toxicity and growth characteristics of these dinoflagellates, distributed worldwide, is proposed. PMID:27754462

  10. Airborne pollen of Carya, Celtis, Cupressus, Fraxinus and Pinus in the metropolitan area of Monterrey Nuevo Leon, Mexico.

    Science.gov (United States)

    Rocha-Estrada, Alejandra; Alvarado-Vázquez, Marco Antonio; Torres-Cepeda, Teresa Elizabeth; Foroughbakhch-Pournavab, Rahim; Hernández-Piñero, Jorge Luis

    2008-01-01

    The concentration of pollen grains in the atmosphere over the metropolitan area of Monterrey, Nuevo Leon, Mexico, was analyzed throughout a year from March 2003-February 2004, focused on the genus Carya, Celtis, Cupressus, Fraxinus and Pinus owing to their interest as etiological pollinosis agents in diverse regions of the world. A 7-day Hirst type volumetric spore and pollen trap was located on a building roof of the city at 15 m from ground level for continuous sampling. The total quantity of pollen recorded for the study period was 21,083 grains/m(3), corresponding to 49.75 % of the taxa of interest. February and March were the months with higher pollen amounts in the air with 7,525 and 2,781 grains/m(3), respectively, and amounted to 49 % of total year through pollen. Fraxinus was the genus which contributed to the largest amount of pollen with 28 % of total grains (5,935 grains/m(3)) followed by Cupressus with 13 % (2,742 grains/ m(3)). Celtis, Pinus and Carya contributed with 5.3 % , 2.7 % , and 0.6 % of total pollen, respectively. These results indicate that Fraxinus and Cupressus are present in the area in sufficient quantity to indicate likely involvement in the origin of allergic disorders in the human population.

  11. Archeological Survey of Undeveloped Portions of Eaker Air Force Base, Mississippi County, Arkansas

    Science.gov (United States)

    1991-01-25

    Swamp (Quercus bicolor) T I White (Quercus alba)11 Pecan ( Carya illinoensis ) Persimmon (Diospyros virginiana) T 2 2 Plum (Prunus sp.) T Red Haw...Celtus occidentalis) 12 9 Hickory, ( Carya sp.) 5 4 Sheilbark ( Carya laciniosa) T Hornbeamn (Ostrya virginiana) 2 Kentucky Coffee Tree(Gymnocladus dioica

  12. A Cultural Resources Survey and Testing Report of the Elk Chute West Ditch Channel Cleanout Project, Dunklin and Pemiscot Counties, Missouri

    Science.gov (United States)

    1992-02-01

    T Red (Quercus rubra) 1 1 Spanish (Quercus falcata) I Swamp (Quercus bicolor) T I White (Quercus alba) 1 1 Pecan ( Carya illinoensis ) 1 1 Persimmon...Populus sp.) 1 3 Dogwood (Cornus sp.) I Hackberry (Celtus occidentalis) 12 9 Hickory ( Carya sp.) 5 4 Shellbark ( Carya laciniosa) T Hornbeam (Ostrya

  13. Monitoring oak-hickory forest change during an unprecedented red oak borer outbreak in the Ozark Mountains: 1990 to 2006

    Science.gov (United States)

    Jones, Joshua S.; Tullis, Jason A.; Haavik, Laurel J.; Guldin, James M.; Stephen, Fred M.

    2014-01-01

    Upland oak-hickory forests in Arkansas, Missouri, and Oklahoma experienced oak decline in the late 1990s and early 2000s during an unprecedented outbreak of a native beetle, the red oak borer (ROB), Enaphalodes rufulus (Haldeman). Although remote sensing supports frequent monitoring of continuously changing forests, comparable in situ observations are critical for developing an understanding of past and potential ROB damage in the Ozark Mountains. We categorized forest change using a normalized difference water index (NDWI) applied to multitemporal Landsat TM and ETM+ imagery (1990, 2001, and 2006). Levels of decline or growth were categorized using simple statistical thresholds of change in the NDWI over time. Corresponding decline and growth areas were then observed in situ where tree diameter, age, crown condition, and species composition were measured within variable radius plots. Using a machine learning decision tree classifier, remote sensing-derived decline and growth was characterized in terms of in situ observation. Plots with tree quadratic mean diameter at breast height ≥21.5 cm were categorized remotely as in severe decline. Landsat TM/ETM+-based NDWI derivatives reveal forest decline and regrowth in post-ROB outbreak surveys. Historical and future Landsat-based canopy change detection should be incorporated with existing landscape-based prediction of ROB hazard.

  14. A novel method for extraction of a proteinous coagulant from Plantago ovata seeds for water treatment purposes.

    Science.gov (United States)

    Ramavandi, Bahman; Hashemi, Seyedenayat; Kafaei, Raheleh

    2015-01-01

    Several chemicals have been applied in the process of coagulant extraction from herbal seeds, and the best extraction has been obtained in the presence of KCl or NaNO3[1-3], and NaCl [4]. However, the main challenge posed to these methods of coagulant extraction is their relatively low efficiency for water treatment purposes and the formation of dissolved organic matter during the treatment process. In these methods the salts, which have a one-valance metal (Na(+) and K(+)), are deposited in the internal structure and the pore of the coagulant, and may be useful for the coagulation/flocculation process. In this research, we found that modified methods produced more dense protein. Therefore, the modified procedure was better than the older one for removal of turbidity and harness from the contaminated water. Here we describe a method where: •According to the Hardy-Schulze rule, we applied the Fe(3+) ions instead of Na(+) and K(+) for the extraction of protein from Plantago ovata seeds.•The method was narrowed to extract protein by ethanol (defatting) and ammonium acetate and CM-Sepharose (protein extraction).•Two consecutive elutriations of crude extract was directly performed using 0.025-M FeCl3 and 0.05-M FeCl3 according to the basis of the ion-exchange processes.

  15. Discovery, Prevalence, and Persistence of Novel Circular Single-Stranded DNA Viruses in the Ctenophores Mnemiopsis leidyi and Beroe ovata.

    Science.gov (United States)

    Breitbart, Mya; Benner, Bayleigh E; Jernigan, Parker E; Rosario, Karyna; Birsa, Laura M; Harbeitner, Rachel C; Fulford, Sidney; Graham, Carina; Walters, Anna; Goldsmith, Dawn B; Berger, Stella A; Nejstgaard, Jens C

    2015-01-01

    Gelatinous zooplankton, such as ctenophores and jellyfish, are important components of marine and brackish ecosystems and play critical roles in aquatic biogeochemistry. As voracious predators of plankton, ctenophores have key positions in aquatic food webs and are often successful invaders when introduced to new areas. Gelatinous zooplankton have strong impacts on ecosystem services, particularly in coastal environments. However, little is known about the factors responsible for regulating population dynamics of gelatinous organisms, including biological interactions that may contribute to bloom demise. Ctenophores are known to contain specific bacterial communities and a variety of invertebrate parasites and symbionts; however, no previous studies have examined the presence of viruses in these organisms. Building upon recent studies demonstrating a diversity of single-stranded DNA viruses that encode a replication initiator protein (Rep) in aquatic invertebrates, this study explored the presence of circular, Rep-encoding single-stranded DNA (CRESS-DNA) viruses in the ctenophores Mnemiopsis leidyi and Beroe ovata collected from the Skidaway River Estuary and Savannah River in Georgia, USA. Using rolling circle amplification followed by restriction enzyme digestion, this study provides the first evidence of viruses in ctenophores. Investigation of four CRESS-DNA viruses over an 8-month period using PCR demonstrated temporal trends in viral prevalence and indicated that some of the viruses may persist in ctenophore populations throughout the year. Although future work needs to examine the ecological roles of these ctenophore-associated viruses, this study indicates that viral infection may play a role in population dynamics of gelatinous zooplankton.

  16. TWO SPECIES OF PROFUSULINELLA (P. ALJUTOVICA AND P. OVATA, EARLY MOSCOVIAN (PENNSYLVANIAN FUSULINES FROM SOUTHERN TURKEY AND SUBDIVISION OF PRIMITIVE GROUPS OF THE FAMILY FUSULINIDAE

    Directory of Open Access Journals (Sweden)

    FUMIO KOBAYASHI

    2011-03-01

    Full Text Available Early Moscovian (Pennsylvanian fusulines, Profusulinella aljutovica and Profusulinella ovata, from the Hadim area, southern Turkey are described systematically. They are contained in the bedded limestone (algal fusuline grainstone of the Yaricak Formation of the Aladag Unit in the Tauride Block. Morphologic analysis of these and similar species suggests: (1 Aljutovella should be synonymous with Profusulinella; (2 Ovatella, Depratina, Staffellaeformes, Aljutovella (Elongatella, Tikhonovichiella, Skelnevatella, and Priscoidella proposed in 1980’s and 1990’s are also synonymous with Profusulinella; and (3 the families Profusulinellidae and Aljutovellidae are not necessary and Profusulinella is included in the subfamily Fusulinellinae placed under the family Fusulinidae. 

  17. Effects of Different Growing Media and Polyethylene Pot Size on Some Morphological Seedling Characteristics of Caper (Capparis ovata Desf.

    Directory of Open Access Journals (Sweden)

    Zafer Ölmez

    2011-04-01

    Full Text Available Caper (Capparis ovata Desf. can be used to prevent destruction of the forests by providing an economical source to inhabitant and in order to combate against the soil erosion. The growing healthy and the best quality seedlings is an important issue in plantation and erosion control studies. Seedling morphology is an important indicator to obtain high quality seedlings. The mixtures of different materials such as road slope soil + sand (1:1, forest soil + creek sand + manure (3:1:1, forest soil and road slope soil, and polyethylene pots of different dimensions such as 12-22 cm, 15-23 cm, 19-30 cm were used as seedling growing media and pot in this study. The study was carried out to determine the effects of different seedling growing media and polyethylene pots on some morphological seedling characteristics such as shoot length (SL, root collar diameter (RCD, fresh shoot weight (FSW, dry shoot weight (DSW, fresh root weight (FRW and dry root weigh (DRW. The experimental design was a randomized complete block with three replications (30 polyethylene pots for each replication for every treatment under open field conditions. According to statistical analyses (α=0.05, the best SL (167.3 mm and RCD (2.01 mm were obtained from the growing media of forest soil + creek sand + manure (3:1:1 with polyethylene pots had 19-30 cm dimension. The best FRW (3.45 g, FSW (1.28 g, DRW (1.36 g and DSW (0.43 g were determined from forest soil + creek sand + manure (3:1:1 growing media with the pots had 15-23 cm dimension.

  18. Discovery, prevalence, and persistence of novel circular single-stranded DNA viruses in the ctenophores Mnemiopsis leidyi and Beroe ovata

    Directory of Open Access Journals (Sweden)

    Mya eBreitbart

    2015-12-01

    Full Text Available Gelatinous zooplankton, such as ctenophores and jellyfish, are important components of marine and brackish ecosystems and play critical roles in aquatic biogeochemistry. As voracious predators of plankton, ctenophores have key positions in aquatic food webs and are often successful invaders when introduced to new areas. Gelatinous zooplankton have strong impacts on ecosystem services, particularly in coastal environments. However, little is known about the factors responsible for regulating population dynamics of gelatinous organisms, including biological interactions that may contribute to bloom demise. Ctenophores are known to contain specific bacterial communities and a variety of invertebrate parasites and symbionts; however, no previous studies have examined the presence of viruses in these organisms. Building upon recent studies demonstrating a diversity of single-stranded DNA viruses that encode a replication initiator protein (Rep in aquatic invertebrates, this study explored the presence of circular, Rep-encoding single-stranded DNA (CRESS-DNA viruses in the ctenophores Mnemiopsis leidyi and Beroe ovata collected from the Skidaway River Estuary and Savannah River in Georgia, USA. Using rolling circle amplification followed by restriction enzyme digestion, this study provides the first evidence of viruses in ctenophores. Investigation of four CRESS-DNA viruses over an eight-month period using PCR demonstrated temporal trends in viral prevalence and indicated that some of the viruses may persist in ctenophore populations throughout the year. Although future work needs to examine the ecological roles of these ctenophore-associated viruses, this study indicates that viral infection may play a role in population dynamics of gelatinous zooplankton.

  19. In vitro -in vivo performance evaluation of treated Plantago ovata husk based fast dissolving tablets of glipizide: Flashtab technology

    Directory of Open Access Journals (Sweden)

    Antesh Kumar Jha

    2014-01-01

    Full Text Available Physicians suggest premeal administration of glipizide (30 min before a meal because of longer disintegration time (approximately 15 min of conventional tablet. Hence, the dosage form was developed, called as fast dissolving tablet (FDT, which disintegrates rapidly within a minute. FDTs by Flashtab technology is based on a swellable agent and a superdisintegrant. In the current study, treated Plantago ovata husk (TPOH, and microcrystalline cellulose were utilized as natural superdisintegrant and swellable agent, respectively. FDT formulations were prepared by direct compression and evaluated for in vitro tablet performance, such as disintegration time, wetting time, hardness, friability, swelling and percent drug release. On the basis of finding, formulation with 15% TPOH concentration (TPOH 7 was selected as optimized formulation. To evaluate the in vitro performance, the formulation TPOH 7 and the marketed tablets (glynase were administered to rabbits. In the case of marketed tablet, the peak plasma-concentration of glipizide was obtained in 2.83 h of administration whereas it was 2 h for TPOH 7 indicating immediate absorption and therefore faster onset of action of the prepared FDT formulation than the marketed one. Drug interaction studies, performed by using FTIR spectroscopy, X-ray diffractometry and differential scanning calorimetric methods, indicate that the glipizide is compatible with the formulation components. The accelerated stability study (40°C ± 2°C/75% ±5% relative humidity for the optimized formulation showed a negligible change over time for the in vitro parameters. The results suggest that TPOH has promising potential for faster disintegration and fulfills the requirement of FDTs.

  20. Non-targeted metabolite profiling and scavenging activity unveil the nutraceutical potential of psyllium (Plantago ovata Forsk

    Directory of Open Access Journals (Sweden)

    Manish Kumar Patel

    2016-04-01

    Full Text Available Non–targeted metabolomics implies that psyllium (Plantago ovata is a rich source of natural antioxidants, PUFAs (ω-3 and ω-6 fatty acids and essential and sulphur–rich amino acids, as recommended by the FAO for human health. Psyllium contains phenolics and flavonoids that possess reducing capacity and ROS scavenging activities. In leaves, seeds and husks, about 76%, 78%, 58% polyunsaturated, 21%, 15%, 20% saturated and 3%, 7%, 22% monounsaturated fatty acids were found, respectively. A range of FAs (C12 to C24 was detected in psyllium and among different plant parts, a high content of the nutritive indicators ω-3 alpha–linolenic acid (57% and ω-6 linoleic acid (18% was detected in leaves. Similarly, total content of phenolics and the essential amino acid valine were also detected utmost in leaves followed by sulphur-rich amino acids and flavonoids. In total, 36 different metabolites were identified in psyllium, out of which 26 (13 each metabolites were detected in leaves and seeds, whereas the remaining 10 were found in the husk. Most of the metabolites are natural antioxidants, phenolics, flavonoids or alkaloids and can be used as nutrient supplements. Moreover, these metabolites have been reported to have several pharmaceutical applications, including anti-cancer activity. Natural plant ROS scavengers, saponins, were also detected. Based on metabolomic data, the probable presence of a flavonoid biosynthesis pathway was inferred, which provides useful insight for metabolic engineering in the future. Non-targeted metabolomics, antioxidants and scavenging activities reveal the nutraceutical potential of the plant and also suggest that psyllium leaves can be used as a green salad as a dietary supplement to daily food.

  1. Effect of drought stress and sulphur fertilizer on quantity and quality yield of psyllium (Plantago ovata L. in Baluchestan

    Directory of Open Access Journals (Sweden)

    M. Mousavi nik

    2016-05-01

    Full Text Available Management of chemical fertilizers application is very important issues on environment and plant yield especially in arid and-semi arid region. In order to determine the effects of drought stresses and fertilizer levels on quantity and quality yields of psyllium (Plantago ovata L., a study was conducted as split plot based on randomized complete block design with four replications at the Natural Resources and Agriculture Researches Center of Balouchestan, Iran, during growing season of 2009-2010. Treatments included different irrigation regimes (three, five and eight times irrigation during the growing season as main plots and four levels of sulphur fertilizer (0, 75, 150 and 225 kg.ha-1 sulphur as sub plot. The results showed that the irrigation regimes and sulphur fertilizer had significant effects on seed and biological yield of psyllium, so the highest seed and biological yields obtained in eight times irrigation. Also, the maximum of these factors were achieved in 225 kg.ha-1 sulphur. The highest harvest index and 1000- seed weight, No. seed per spike and No. spike per plant were observed in eight times irrigation and 225 kg.ha-1 sulphur. The highest plant height was obtained in eight times irrigation and 225 kg.ha-1 sulphur and the maximum mucilage percentage and proline content were obtained in three times irrigation. The maximum mucilage yield and carbohydrate content were achieved in eight times irrigation. Among sulphur fertilizer, the highest amounts for all factors were achieved in 225 kg.ha-1 sulphur. There was positive and significant correlation between seed yield with spike No. per plant, Seed No. per spike, 1000-Seed, biological yield and mucilage yield.

  2. Introduction and Development of Carya illinoensis in Honghe Prefecture%红河州薄壳山核桃引种及产业发展分析

    Institute of Scientific and Technical Information of China (English)

    张荣贵

    2013-01-01

    Through 20 years of introduction observation,growing status of Carya illinoensis was normal in Honghe prefecture,and had better cultivation benefit.Third year grafted seedlings began to fruit,ten year grafted seedlings teemed with fruits; eight year grafted seedling produced 13 kg per strains maximum.The average yield per crown projected area was up to 0.17 kg.The seed is full,with the kernel easy to take,in pure flavor,and good quality.Carya illinoensis was suitable to be planted in area of altitude 800 ~ 1600 m.The favorable conditions and constraints of Carya illinoensis planting were analyzed.It was esteemed that as long as planning,planting and managing were carried out scientifically,the prospects of Carya illinoensis industry is promising.%通过20年的引种观察认为,薄壳山核桃在红河州生长结果正常,栽培效益好,嫁接苗种植第三年开始挂果,10年进入盛果初期,8 a生最高株产达13 kg,每树冠投影面积平均产量0.17 kg,种实饱满,取仁容易,味道香纯,品质优良,适宜在红河州海拔800 ~1 600 m的区域栽培.对红河州种植该树种的有利条件及制约因素进行分析,认为只要科学规划、种植、管理,发展薄壳山核桃产业前景广阔.

  3. 薄壳山核桃无性繁殖技术研究进展%Research Progress of Asexual Propagation Techniques of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    李俊南; 李莲芳; 熊新武; 陈宏伟; 习学良

    2012-01-01

    综述了薄壳山核桃无性繁殖技术的研究进展,指出薄壳山核桃是国外引进的高档干果树种和特色新产业.薄壳山核桃无性繁殖技术研究现状包括砧木培育,嫁接技术及影响嫁接成活的因素,扦插繁殖,分株繁殖等栽培研究现状,提出目前薄壳山核桃无性繁殖存在的问题,旨在为薄壳山核桃的良种繁育提供参考.%The research progress of Carya illinoensis asexual propagation technology was summarized. The research status of asexual propagation technique Of Carya illinoensis include rootstock cultivation, grafting techniques and influencing factors, cutting propagation, division propagation. The main existing problems were put forward, so as to provide reference for fine variety breeding of Carya illinoensis.

  4. Características tecnológicas das madeiras de Luehea divaricata, Carya illinoinensis e Platanus x acerifolia quando submetidas ao vergamento.

    Directory of Open Access Journals (Sweden)

    Darci Alberto Gatto

    2008-01-01

    Full Text Available This work was conducted with the purpose of investigating bending characteristics of the wood of Platanus x acerifolia (Ait. Willd., Luehea divaricata Mart. et Zucc and Carya illinoinensis (Wangenh K. Koch. Such species were collected from non-managed forests located in Depressão Central and Encosta Superior do Nordeste, Rio Grande do Sul, Brazil. Five representative adult trees from each species per studied area were cut down, corresponding to a total of thirty trees. From the trunk, a 2.5 m long log was taken and, afterwards, transported to a sawmill for processing. A central 8 cm thick plank was sawn, from which samples for bending were manufactured. The samples were conditioned in standard room to a moisture content of approximately 14%. Then, the samples were placed in boiling water during 35 minutes and bended in rays of 16 and 21cm. For the qualification of the bending defects, the methodology presented by Vorreiter (1958 was used. Results showed that the wood of Carya illinoinensis (Wangenh K. Koch had the best bending characteristics when compared to the other two species, independently of the ray bending tested. It seems that the ring porosity, characteristic of the Carya illinoinensis wood, contributed to the result. On the other hand, the wood of Platanus x acerifolia (Ait. Willd. and Luehea divaricata Mart. et Zucc, with diffuse porosity and larger parenchyma proportion, presented more defective pieces

  5. Analysis of Carya illinoensis main diseases occurrence and control%薄壳山核桃主要病害发生规律及防控

    Institute of Scientific and Technical Information of China (English)

    巨云为; 赵盼盼; 黄麟; 曹霞; 梁艳; 叶健; 高瑾

    2015-01-01

    The domestic and overseas literatures about diseases in Carya illinoensis were collected, and the species, pathogen, damage characteristics and bio⁃control of diseases in Carya illinoensis were summarized. There are 21 species diseases in Carya illinoensis, including 16 fungal diseases, 3 bacterial diseases and 2 nematode diseases. There are 8 main diseases and in which scab, powdery mildew and melasma have the most serious harm. Nowadays leaf scorch,crown gall,bunch,root knot nematode and dagger nematode have not been found yet at home.But the harm in foreign countries was serious, it should be got attention as quarantine disease. In recent years, the domestic pathogenesis trend of increased significantly. It caused serious harm to the trunk of many kinds of Carya illinoensis whose age were over 5⁃year⁃old and it often lead to the death of the whole tree. Zonate spot and maldel secco mostly belonged to weak parasitic fungal diseases;the harm of it was slight. The paper aims at providing theoretical guidance for control of the disease of Carya illinoensis.%对薄壳山核桃病害的种类、病原菌、发生规律及防治措施进行了总结,统计可知,已见报道的薄壳山核桃病害总计21种,其中真菌性病害16种、细菌性病害3种、线虫病害2种;主要的病害有8种,以疮痂病、白粉病、黑斑病危害最为严重。目前叶焦病、冠瘿病、丛枝病、根结线虫和剑线虫等危害薄壳山核桃现象在国内尚未被发现,但在国外危害情况比较严重,应作为我国检疫性病害重点关注对象;薄壳山核桃干腐病近几年在国内发病的趋势上升显著,尤其是对5年生以上多个品种的树干危害比较严重,经常导致整株死亡;轮斑病和干枯病等大多为弱寄生性真菌病害,其危害较轻。

  6. Protective effects of a by-product of the pecan nut industry (Carya illinoensis) on the toxicity induced by cyclophosphamide in rats Carya illinoensis protects against cyclophosphamide-induced toxicity.

    Science.gov (United States)

    Benvegnú, D; Barcelos, R C S; Boufleur, N; Reckziegel, P; Pase, C S; Müller, L G; Martins, N M B; Vareli, C; Bürger, M E

    2010-01-01

    This study investigated the antioxidant effects of pecan nut (Carya illinoensis) shell aqueous extract (AE) on toxicity induced by cyclophosphamide (CP) in the heart, kidney, liver, bladder, plasma and erythrocytes of rats. Rats were treated with water or pecan shell AE (5%) ad libitum, replacing drinking water for 37 days up to the end of the experiment. On day 30, half of each group received a single administration of vehicle or CP 200 mg/kg-ip. After 7 days, the organs were removed. Rats treated with CP showed an increase in lipid peroxidation (LP) and decrease in reduced glutathione (GSH) levels in all structures. Catalase (CAT) activity was increased in the heart and decreased in liver and kidney. Besides, CP treatment decreased plasmatic vitamin C (VIT C) levels and induced bladder macroscopical and microscopical damages. In contrast, co-treatment with pecan shell AE prevented the LP development and the GSH depletion in all structures, except in the heart and plasma, respectively. CAT activity in the heart and liver as well as the plasmatic VIT C levels remained unchanged. Finally, AE prevented CP-induced bladder injury. These findings revealed the protective role of pecan shell AE in CP-induced multiple organ toxicity.

  7. Phytotoxicity of 4,8-dihydroxy-1-tetralone isolated from Carya cathayensis Sarg. to various plant species.

    Science.gov (United States)

    Li, Xian-Xian; Yu, Min-Feng; Ruan, Xiao; Zhang, Yu-Zhu; Wang, Qiang

    2014-09-26

    The aqueous extract from Carya cathayensis Sarg. exocarp was centrifuged, filtered, and separated into 11 elution fractions by X-5 macroporous resin chromatography. A phenolic compound, 4,8-dihydroxy-1-tetralone (4,8-DHT) was isolated from the fractions with the strongest phytotoxicity by bioassy-guided fractionation, and investigated for phytotoxicity on lettuce (Latuca sativa L.), radish (Raphanus sativus L.), cucumber (Cucumis sativus L.), onion (Allium cepa L.) and wheat (Triticum aestivum L.). The testing results showed that the treatment with 0.6 mM 4,8-DHT could significantly depress the germination vigor of lettuce and wheat, reduce the germination rate of lettuce and cucumber, and also inhibit radicle length, plumule length, and fresh weight of seedlings of lettuce and onion, but could significantly promote plumule length and fresh weight of seedlings of cucumber (p seed germination and seedling growth of lettuce, indicating that the phytotoxicity of 4,8-DHT had the selectivity of dosage, action target (plant type) and content (seed germination or seedling growth).

  8. Phytotoxicity of 4,8-Dihydroxy-1-tetralone Isolated from Carya cathayensis Sarg. to Various Plant Species

    Directory of Open Access Journals (Sweden)

    Xian-Xian Li

    2014-09-01

    Full Text Available The aqueous extract from Carya cathayensis Sarg. exocarp was centrifuged, filtered, and separated into 11 elution fractions by X-5 macroporous resin chromatography. A phenolic compound, 4,8-dihydroxy-1-tetralone (4,8-DHT was isolated from the fractions with the strongest phytotoxicity by bioassy-guided fractionation, and investigated for phytotoxicity on lettuce (Latuca sativa L., radish (Raphanus sativus L., cucumber (Cucumis sativus L., onion (Allium cepa L. and wheat (Triticum aestivum L.. The testing results showed that the treatment with 0.6 mM 4,8-DHT could significantly depress the germination vigor of lettuce and wheat, reduce the germination rate of lettuce and cucumber, and also inhibit radicle length, plumule length, and fresh weight of seedlings of lettuce and onion, but could significantly promote plumule length and fresh weight of seedlings of cucumber (p < 0.05. For the tested five plants, the 4,8-DHT was the most active to the seed germination and seedling growth of lettuce, indicating that the phytotoxicity of 4,8-DHT had the selectivity of dosage, action target (plant type and content (seed germination or seedling growth.

  9. Analysis of the Infrared Spectrum of Oil Samples of 5 Pecan nut Varieties (Carya Illinoensis K and their Comparison with Other Vegetable oils

    Directory of Open Access Journals (Sweden)

    L. E. Chacón-Garza

    2016-12-01

    Full Text Available The objective of the present work was to evaluate the stability of pecan nut oil (Carya Illinoensis K from 5 different varieties, by chemical analysis of peroxides and saponification index, as well as an analysis of infrared spectroscopy in order to compare the spectra of the oils, and determine the degree of similarity they have with other vegetable oils rich in oleic and linolenic acid. The oil samples had a good stability over 3 months and no significant differences were found in the composition of the same, and they were very similar to other oils of vegetable origin.

  10. RESPUESTAS MORFOGÉNICAS EN LA PROPAGACIÓN in vitro DE NOGAL PECANERO (Carya illinoinensis [Wangenh] K. Koch

    Directory of Open Access Journals (Sweden)

    Jazmín A. Ávila-Treviño

    2013-01-01

    Full Text Available Las respuestas embriogénicas y organogénicas en nogal (Carya illinoinensis [Wangenh] K. Koch se observaron bajo el cultivo in vitro de segmentos de hojas, yemas axilares y embriones cigóti- cos. El necrosamiento se controló empleando carbón activado (CA: 1 %, polivinilpirrolidona (0.1 %, nitrato de plata (AgNO3: 1 %, ácido cítrico (150 mg·L-1 y ácido ascórbico (100 mg·L-1, con presencia de luz y en oscuridad. Se utilizó el medio básico de Murashige y Skoog suplementado con 0.40 mg·L-1 de tiamina, 100 mg·L-1 de myo-inositol, 3 % de sacarosa, incorporando 2,4-D para hojas, tidiazurón (TDZ para embriones, y las combinaciones de benciladenina (BA, kinetina (KIN, ácido naftalenacético (ANA y ácido indolbutírico (AIB para yemas axilares. El necrosamiento de tejidos se redujo en 75 % y 83 % adicionando CA y AgNO3, respectivamente. El 33 % y 66 % de los callos embriogénicos se indujeron a partir de hojas, utilizando 1 y 3 mg·L-1 de 2,4-D. La mayor producción de callos (58 % a partir de embriones se obtuvo con la concentración de 3 mg·L-1 de TDZ. En yemas axilares, la combinación de KIN (3.0 μM, BA (1.0 μM y AIB (0.3 μM incrementó el número de hojas y plántulas, y longitud de brotes.

  11. National Program of Inspection of Non-Federal Dams, Tennessee. Spring Lake Dam (Candlewood II) Old Hickory Dam (Candlewood III) (Inventory Numbers TN 06930 & TN 06926), Hatchie River Basin, near Saulsbury, Hardeman County, Tennessee. Phase I Investigation Report,

    Science.gov (United States)

    1981-09-01

    20314. 1.3 Past Inspections - Past inspections of Spring Lake and Old Hickory Lake Dams include cursory inspections by George Moore and Troy Wedekind of...aertificate Cursory Preliminary Site Review Damage Potential Category:One Two Three Undetermined Inspection by: George Moore and Troy Wedekind Inspection...Cursory Preliminary Site Review Damage Potential Category:One Two Three __ Undetermined Inspection by: George Moore and Troy Wedekind Inspection Results

  12. Study on Qingfeng Carya illinoensis Base Construction in Anhui Province%安徽青峰薄壳山核桃基地建设探讨

    Institute of Scientific and Technical Information of China (English)

    丁胜; 杨兰菊

    2013-01-01

    通过建设项目实例阐述薄壳山核桃基地建设方案、品种选择、工艺流程等,为基地建设提供技术理论参考。基地建设对周边区域的薄壳山核桃推广种植有辐射带动和示范作用,下一步就新品种引进及企业市场经营管理等需要更进一步研究。%This article described the construction project of Carya illinoensis base-building plan,species selection, technical process,etc.,to provide technical theoretical reference for construction. Based on the surrounding region through the promotion of planting Carya illinoensis radiation and exemplary role,the next step is to take further study about the introduction of new varieties and business market management.

  13. Analysis on the Planting of Carya Illinoensis in Lianyungang Regions%连云港地区种植薄壳山核桃的研究价值

    Institute of Scientific and Technical Information of China (English)

    汤成文; 郭斌

    2012-01-01

    Carya illinoensis, with straight trunk, widely ovate crowns and developed root system, is tolerant of moisture and can be isolated planted or mass planted beside the lake or on the lawns., etc. It is suitable for the shade trees and roadside trees, as well as the afforestations along the rivers or in the plain areas. It can be used as good urban greening tree species and fruit timber tree species. Carya illinoensis can be planted on both sides of the Yangtze River and build large economic forest. Its kernel is edible and delicious and the extracted oil can be used as food. Because of its resilience, it is good military materials. The kernel contains more than 70% oils.%薄壳山核桃树干端直,树冠近广卵形,根系发达,耐水湿,可孤植、丛植于湖畔、草坪等,宜作庭荫树,行道树,亦适于河流沿岸及平原地区绿化造林,为很好的城乡绿化树种和果材兼用树种,江苏省长江两岸可大片营造经济林.核仁可食,味美榨油供食用;材质坚韧,为优良的军工用材.种仁含油量达70%以上.

  14. A male-produced aggregation pheromone blend consisting of alkanediols, terpenoids, and an aromatic alcohol from the cerambycid beetle Megacyllene caryae.

    Science.gov (United States)

    Lacey, Emerson S; Moreira, Jardel A; Millar, Jocelyn G; Hanks, Lawrence M

    2008-03-01

    Bioassays conducted with a Y-tube olfactometer provided evidence that both sexes of the cerambycid beetle Megacyllene caryae (Gahan) were attracted to odor produced by males. Odor collected from male M. caryae contained eight male-specific compounds: a 10:1 blend of (2S,3R)- and (2R,3S)-2,3-hexanediols (representing 3.2 +/- 1.3% of the total male-specific compounds), (S)-(-)-limonene (3.1 +/- 1.7%), 2-phenylethanol (8.0 +/- 2.4%), (-)-alpha-terpineol (10.0 +/- 2.8%), nerol (2.1 +/- 1.5%), neral (63.3 +/- 7.3%), and geranial (8.8 +/- 2.4%). Initial field bioassays determined that none of these compounds was attractive as a single component. Further field trials that used a subtractive bioassay strategy determined that both sexes were attracted to the complete blend of synthetic components, but the elimination of any one component resulted in a decline in trap captures. Blends that were missing (2S,3R)-2,3-hexanediol, (2R,3S)-2,3-hexanediol, or citral (a 1:1 mixture of neral and geranial) attracted no more beetles than did controls. A pheromone blend of this complexity, composed of alkanediols, terpenoids, and aromatic alcohols, is unprecedented for cerambycid species.

  15. Theileria sergenti mixed infection with Babesia ovata in Chinese black-and-white cattle%中国黑白花牛瑟氏泰勒虫和卵形巴贝虫混合感染病例

    Institute of Scientific and Technical Information of China (English)

    许应天; 张守发

    2003-01-01

    @@ 最近,作者在整理以前的血涂片标本时意外地发现了一种血液原虫.根据原始记录、虫体形态等特征,综合判定为卵形巴贝虫(Babesia ovata),该原虫在本地区为首次发现.

  16. Les risques sanitaires liés à la présence d'Ostreopsis ovata dans les eaux de baignade ou d'activités nautiques

    OpenAIRE

    Kermarec, Florence; Dor, Frederic; Armengaud, Alexis; Charlet, Francis; Kantin,Roger; Sauzade, Didier; de Haro, Luc

    2008-01-01

    An initial surveillance system of Ostreopsis ovata was set Lip along the Mediterranean coast in the summer of 2007. To Strengthen and adapt this system, we reviewed the information available for a health risk assessment of this monocellular species of algae that produces palytoxin and is increasingly observed in the Mediterranean Sea. Since 2002, this species has been reported to be responsible for many human cases of irritation, Cough, fever and respiratory problems in Europe. It is not Curr...

  17. An inverse relationship between allelopathic activity and salt tolerance in suspension cultures of three mangrove species, Sonneratia alba, S. caseolaris and S. ovata: development of a bioassay method for allelopathy, the protoplast co-culture method.

    Science.gov (United States)

    Hasegawa, Ai; Oyanagi, Tomoya; Minagawa, Reiko; Fujii, Yoshiharu; Sasamoto, Hamako

    2014-11-01

    A bioassay method for allelopathy, the 'protoplast co-culture method' was developed to study the relationship between salt tolerance and allelopathy of three mangrove species, Sonneratia alba, S. caseolaris, and S. ovata. Plants of S. alba grow in the seaward-side high salinity region and plants of the latter two species grow in upstream-side regions of a mangrove forest, respectively. Effects of five sea salts (NaCl, KCl, MgCl2, MgSO4 and CaCl2) on the growth of the suspension cells of the latter two species were first investigated by a small-scale method using 24-well culture plates. S. ovata cells showed higher tolerance than S. caseolaris cells to NaCl and other salts, but were not as halophilic as S. alba cells. Protoplasts isolated from suspension cells were co-cultured with lettuce protoplasts in Murashige and Skoog's (MS) basal medium containing 1 μM 2,4-dichlorophenoxyacetic acid, 0.1 μM benzyladenine, 3% sucrose and 0.6-0.8 M osmoticum. S. caseolaris protoplasts had a higher inhibitory effect on lettuce protoplast cell divisions than S. alba protoplasts at any lettuce protoplast density, and the effect of S. ovata was intermediate between the two. These results were similar to those obtained from a different in vitro bioassay method for allelopathy, the 'sandwich method' with dried leaves. The inverse relationship between allelopathic activity and salt tolerance in suspension cells of Sonneratia mangroves is discussed.

  18. Litter Species Composition and Topographic Effects on Fuels and Modeled Fire Behavior in an Oak-Hickory Forest in the Eastern USA.

    Science.gov (United States)

    Dickinson, Matthew B; Hutchinson, Todd F; Dietenberger, Mark; Matt, Frederick; Peters, Matthew P

    2016-01-01

    Mesophytic species (esp. Acer rubrum) are increasingly replacing oaks (Quercus spp.) in fire-suppressed, deciduous oak-hickory forests of the eastern US. A pivotal hypothesis is that fuel beds derived from mesophytic litter are less likely than beds derived from oak litter to carry a fire and, if they do, are more likely to burn at lower intensities. Species effects, however, are confounded by topographic gradients that affect overstory composition and fuel bed decomposition. To examine the separate and combined effects of litter species composition and topography on surface fuel beds, we conducted a common garden experiment in oak-hickory forests of the Ohio Hills. Each common garden included beds composed of mostly oak and mostly maple litter, representative of oak- and maple-dominated stands, respectively, and a mixture of the two. Beds were replenished each fall for four years. Common gardens (N = 16) were established at four topographic positions (ridges, benches on south- and northeast-facing slopes, and stream terraces) at each of four sites. Litter source and topographic position had largely independent effects on fuel beds and modeled fire dynamics after four years of development. Loading (kg m-2) of the upper litter layer (L), the layer that primarily supports flaming spread, was least in more mesic landscape positions and for maple beds, implying greater decomposition rates for those situations. Bulk density in the L layer (kg m-3) was least for oak beds which, along with higher loading, would promote fire spread and fireline intensity. Loading and bulk density of the combined fermentation and humic (FH) layers were least on stream terrace positions but were not related to species. Litter- and FH-layer moistures during a 5-day dry-down period after a rain event were affected by time and topographic effects while litter source effects were not evident. Characteristics of flaming combustion determined with a cone calorimeter pointed to greater fireline

  19. ESTIMATION OF AGE OF SEGREGATION OF JUVENILE AND MATURE Carya illinoinensis (Wangenh K. Koch WOOD USING ANATOMICAL CHARACTERISTICS

    Directory of Open Access Journals (Sweden)

    Darci Alberto Gatto

    2010-12-01

    Full Text Available Knowledge of the demarcation of juvenile and mature wood is essential both for wood technology and forest management. Thinning, in most cases, must take into account this parameter, as the juvenile wood has inferior characteristics compared to mature wood, and different proportions of each type of wood will affect the quality and the use of the wood. Thus, this study aimed to determine the age of maturation of the wood using anatomical characteristics of Carya illinoinensis (Wangenh K. Koch wood, through the segregation of juvenile and mature wood. Three adult trees, of good trunk, with diameter greater than 30 cm DBH, were chosen from the region Encosta Superior do Nordeste in the State of the Rio Grande do Sul. From each tree, one disc was removed, with approximately 2 cm in thickness, at 0.10 m in height of the trunk. From each disc was removed a central portion of 2 cm in width, well oriented in the radial direction, including the pith in the center, and this central portion was divided into samples “A” and “B”. One of these two samples was selected for separation of the initial wood of each growth ring for maceration (Jeffrey method . First, the length, width and diameter of the lumen of one hundred fibers were measured in the first ring (next to the bark and later, thirty fibers were defined per growth ring as statistically sufficient for the assay. The thickness of the walls of the fiber was taken as the half of the difference of the diameter of the fiber and the lumen. The segregation of the two types of wood was defined by the radial variation (pith-bark of the anatomical characteristics (length, diameter, width of the lumen and thickness of the wall of fibers, through two simple linear regressions. The results indicate that the fiber length is the best characteristic for the definition of the year of segregation. The age of segregation of juvenile-mature wood was defined as 16 years. In their turn, the anatomical parameters

  20. Establishment of multiplex PCR for detection of bovine Theileria sergenti and Babesia ovata%牛瑟氏泰勒虫与牛卵形巴贝斯虫多重PCR检测方法的建立

    Institute of Scientific and Technical Information of China (English)

    王轶男; 钱年超; 黄国明; 胡诗悦; 薛书江; 贾立军; 张守发

    2013-01-01

    For simultaneous detection of Theileria sergenti and Babesia ovata ,a multiplex PCR was established using 2 pairs of specific primers designed on the basis of ITS gene of Theileria sergenti and CCTη gene of Babesia ovata. Reaction conditions of the multiplex PCR were optimized. Two targeting fragments, 1 020 bp(for T. sergenti) and 537 bp for (B. ovata), were amplified. The detection limit was 10 pg/μL for T. sergenti and 1 pg/μL for B. ovata, respectively. Twenty-three clinical samples from Hunchun in Jilin province were detected by the multiplex PCR and the detection rate was 69% for T. sergenti; 52% for B. ovata and 52% for mixed infection. This method could be useful in clinic diagnoses.%根据GenBank上登录的牛瑟氏泰勒虫内转录间隔子基因(ITS基因)和牛卵形巴贝斯虫CCTη基因序列,设计合成了2对特异性引物.通过对反应条件进行优化,建立了同时检测牛瑟氏泰勒虫和牛卵形巴贝斯虫的多重PCR方法.结果显示,用该多重PCR方法可同时扩增出2条与试验设计相符的1 020 bp(牛瑟氏泰勒虫)和537 bp(牛卵形巴贝斯虫)的特异性条带,对牛瑟氏泰勒虫和牛卵形巴贝斯虫的最低检出限分别为10 pg/μL和1 pg/μL.用该方法对采自吉林省珲春市的23份临床样本进行检测,结果牛瑟氏泰勒虫的阳性率为69%,牛卵形巴贝斯虫的阳性率为52%,混合感染率为52%.表明,建立的多重PCR方法可用于临床诊断.

  1. Environmental and Cultural Impact. Proposed Tennessee Colony Reservoir, Trinity River, Texas. Volume IV. Appendix F.

    Science.gov (United States)

    1972-01-01

    Some other species in this area are hackberry (Celtis laevigata), water oak (Quercus nigra), pecan ( Carya illinoensis ), and American elm (Ulmus...Some upland hickory species ( Carya ) will also be encountered. These areas should be maintained as such in order to prevent erosion of the future

  2. La Farge Lake, Kickapoo River, Vernon County, Wisconsin, Final Environmental Statement.

    Science.gov (United States)

    1972-02-18

    alternifolia (Wingstem), Asimina. triloba (Paw Paw), Aster vimineus, Buchloe dactylodes (Buffalo Grass), Carya glabra (Sweet Pg-ut), illinoensis (Pecan...black oak (Quercus velutina), white oak (Quercus alba), and hickory ( Carya cordiformes) generally occupy the drier uplands and slopes with south and

  3. Utilização de parâmetros morfoanatômicos na análise da fitotoxidez do flúor em folhas de Magnolia ovata (A. St.-Hil. Spreng. (Magnoliaceae Use of morphoanatomic parameters in the analysis of fluoride toxicity in leaves of Magnolia ovata (A. St.-Hil. Spreng. (Magnoliaceae

    Directory of Open Access Journals (Sweden)

    Bruno Francisco Sant'Anna-Santos

    2007-08-01

    Full Text Available Com os objetivos de avaliar o grau de suscetibilidade e caracterizar as injúrias na morfoanatomia de folhas de Magnolia ovata, mudas foram submetidas à chuva simulada com flúor (10 µg.ml-1 de F- por 10 dias consecutivos. No tratamento controle, utilizou-se apenas água deionizada. Folhas foram coletadas para quantificação de flúor na matéria seca e fixadas para análises em microscopia de luz e eletrônica de varredura. As folhas apicais apresentaram pequena porcentagem de necroses intervenais e marginais em uma ou ambas as faces e maior acúmulo de flúor, em relação ao controle, quando comparadas com as folhas da porção basal. A análise micromorfológica das folhas aparentemente sadias indicou alterações nas paredes periclinais externas da epiderme e formação de concavidades, além de cristas estomáticas danificadas, erosão de ceras epicuticulares e presença de esporos e hifas de fungos. A caracterização estrutural das injúrias evidenciou retração de protoplasto das células epidérmicas, colapso das células do mesofilo e da epiderme e acúmulo de compostos fenólicos em células das regiões necrosadas. As alterações micromorfológicas das folhas ocorreram antes que sintomas fossem observados, o que comprova a importância da micromorfologia na diagnose precoce da injúria. As plantas de M. ovata apresentaram poucos sintomas visuais em resposta ao flúor, entretanto as alterações morfoanatômicas indicam que essa espécie possui potencial para ser utilizada como bioindicadora.This work aimed to evaluate the degree of susceptibility and characterize the injuries caused by fluoride in the morphoanatomy of Magnolia ovata. Seedlings were subjected to fluoride simulated rain (10 µg.ml-1 of F- during 10 consecutive days. In the control treatment, only deionized water was used. Leaves were collected for quantification of fluoride in the dry weight and fixed for light and scanning electron microscopy analyses. The

  4. Removal of Pb(II), Cu(II), and Cd(II) from aqueous solutions by biochar derived from KMnO4 treated hickory wood.

    Science.gov (United States)

    Wang, Hongyu; Gao, Bin; Wang, Shenseng; Fang, June; Xue, Yingwen; Yang, Kai

    2015-12-01

    In this work, a novel approach was developed to prepare an engineered biochar from KMnO4 treated hickory wood through slow pyrolysis (600°C). Characterization experiments with various tools showed that the engineered biochar surface was covered with MnOx ultrafine particles. In comparison to the pristine biochar, the engineered biochar also had more surface oxygen-containing functional groups and much larger surface area. Batch sorption experiments showed that the engineered biochar had strong sorption ability to Pb(II), Cu(II), and Cd(II) with maximum sorption capacities of 153.1, 34.2, and 28.1mg/g, respectively, which were significantly higher than that of the pristine biochar. Batch sorption experiments also showed that the dosage, initial solution pH, and ionic strength affected the removal of the heavy metals by the biochars. The removal of the metals by the engineered biochar was mainly through surface adsorption mechanisms involving both the surface MnOx particles and oxygen-containing groups.

  5. Moisture changes in oak and hickory fuel chips on roofed and unroofed Louisiana air-drying grounds as affected by pile depth and turning of chips

    Energy Technology Data Exchange (ETDEWEB)

    Koch, P.

    1983-06-01

    Freshly cut whole-tree hickory chips had lower moisture content (MC) initially and dried more rapidly than those of southern red oak. Such chips spread during April, 1981 in roofed trays did not dry to 20 percent MC, ovendry-weight basis, faster than those spread in October, 1980. In roofed trays, unturned chips spread 4 inches deep generally dried more rapidly than if spread 8 or 12 inches deep. Times to 20 percent average MC for layers 4, 8, and 12 inches deep were 78 to 94, 79 to 136, and 81 to 150 days, respectively. Twelve-inch-thick layers of southern red oak chips in unroofed trays increased in MC with time, but less so if turned weekly. Twelve-inch-thick layers of southern red oak chips in roofed trays dried considerably faster if turned. Even when in roofed trays and turned weekly, however, 87 days of drying were required to reach 31 percent average MC, and 151 days to reach 29 percent MC.

  6. Sterling C. Robertson Dam and Limestone Lake on the Navasota River, Texas (Leon, Limestone and Robertson Counties).

    Science.gov (United States)

    1976-04-01

    flatsedge (Cyperus s p.) , and Spanish mulberry (Callicarpa americana). Common bottomland forest species included pecan ( Carya illinoensis ), post...ona-wiibT Bull Briar Smilax glauca Cat Greenbriar Salix nigra Black Willow Carya illinoensis Pecan Carya texana Black Hickory Q-erustlefata Post Oak... illinoensis ), post oak (Quercus stellata). hackberry (Ce/is sp.), elm (Ulmus sp.), and holly. Species common in the prairie site included Croton sp., prairie

  7. Cultural Resources Survey and Testing Along Ditch 19 and Extensive Testing of 23DU289, Dunklin and Stoddard Counties, Missouri.

    Science.gov (United States)

    1988-06-30

    Carya illinoensis ) 1 1 Persimmon (Diospyros virginiana) T 2 2 Pl.um (Prunus sp.) T Red Haw (Crataegus sp.) T 1 11 Red Mulberry (Morus rubra) T...2 Cherry (Prunus sp.) T Cottonwood (Populus sp.) 1 3 Dogwood (Cornus sp.) 1 Hackberry (Celtus occidentalis) 12 9 Hickory, ( Carya sp.) 5 4 Shellhark... Carya laciniosa) T Hornbeam (Ostrya virginiana) 2 Kentucky Coffee Tree( Gymnoeladus dioica)T Locust, T Black (Robinia pseudo-acacia) T Honey

  8. Effects of Nitrogen Nutrition and Salinity Stress on 1000-Grain Weight, Mucilage Content and Nutrient Uptake in Psyllium (Plantago ovata F.

    Directory of Open Access Journals (Sweden)

    M. Heidari

    2013-06-01

    Full Text Available In order to investigate the effects of salinity stress and three nitrogen fertilizers on some traits of psyllium (Plantago ovata plants, a factorial experiment, as completely randomized design with three replications, was carried out at University of Zabol, in 2010. Salinity at three levels (0, 100 and 200 mM sodium chloride was the main plot and three forms of nitrogen source (nitrate from calcium nitrate, ammonium from ammonium sulfate, and ammonium + nitrate (50: 50 were the sub-plot. Seeds were sown in pots containing clean sand. After germination, plants nutrition was by application of Hoagland solution, which was prepared according to the nitrogen treatments. Salinity stress was started at 2-leaf stage. Results showed that salinity significantly affected 1000-grain weight, spike length, mucilage content of grains, and swelling index of psyllium grains. By increasing salinity level, the spike length and 1000-grain weight were decreased 21.5% and 27.3%, respectively. Among the four mentioned traits, interaction of salinity and nitrogen treatment significantly affected only the spike length. Maximum spike length was obtained in non-saline treatment and ammonium fertilizer. Salinity stress increased the sodium and chlorine ions and decreased the potassium content in shoots. Nitrogen source and interaction between salinity and nitrogen significantly affected the content of these elements in plants. The highest concentration of sodium and potassium was obtained in 200 mM sodium chloride and non-saline treatments (control, respectively, along with application of ammonium fertilizer.

  9. Plantago ovata F. Mucilage-Alginate Mucoadhesive Beads for Controlled Release of Glibenclamide: Development, Optimization, and In Vitro-In Vivo Evaluation

    Directory of Open Access Journals (Sweden)

    Amit Kumar Nayak

    2013-01-01

    Full Text Available The current study deals with the development and optimization of ispaghula (Plantago ovata F. husk mucilage- (IHM- alginate mucoadhesive beads containing glibenclamide by ionotropic gelation technique. The effects of sodium alginate (SA to IHM and cross-linker (CaCl2 concentration on the drug encapsulation efficiency (DEE, %, as well as cumulative drug release after 10 hours (R10 h, %, were optimized using 32 factorial design based on response surface methodology. The observed responses were coincided well with the predicted values by the experimental design. The optimized mucoadhesive beads exhibited 94.43±4.80% w/w of DEE and good mucoadhesivity with the biological membrane in wash-off test and sustained drug release profile over 10 hours. The beads were also characterized by SEM and FTIR analyses. The in vitro drug release from these beads was followed by controlled release (zero-order pattern with super case-II transport mechanism. The optimized glibenclamide-loaded IHM-alginate mucoadhesive beads showed significant antidiabetic effect in alloxan-induced diabetic rats over prolonged period after oral administration.

  10. Market analysis of food products for detection of allergenic walnut (Juglans regia) and pecan (Carya illinoinensis) by real-time PCR.

    Science.gov (United States)

    López-Calleja, Inés María; de la Cruz, Silvia; González, Isabel; García, Teresa; Martín, Rosario

    2015-06-15

    Two real-time polymerase chain reaction (PCR)-based assays for detection of walnut (Juglans regia) and pecan (Carya illinoinensis) traces in a wide range of processed foods are described here. The method consists on a real-time PCR assay targeting the ITS1 region, using a nuclease (TaqMan) probe labeled with FAM and BBQ. The method was positive for walnut and pecan respectively, and negative for all other heterologous plants and animals tested. Using a series of model samples with defined raw walnut in wheat flour and heat-treated walnut in wheat flour with a range of concentrations of 0.1-100,000 mg kg(-1), a practical detection limit of 0.1 mg kg(-1) of walnut content was estimated. Identical binary mixtures were done for pecan, reaching the same limit of detection of 0.1 mg kg(-1). The assay was successfully trialed on a total of 232 commercial foodstuffs.

  11. 不同处理对美国山核桃种子发芽的影响%Treatments for germination of Carya illinoinensis seeds

    Institute of Scientific and Technical Information of China (English)

    李淑芳; 杨建华; 范志远; 习学良; 陈宏伟

    2011-01-01

    A germination test of Carya illinoinensis seeds was conducted with different storage times and methods as well as various soaking methods using phytohormones, and differing seed stratification procedures. Results showed that seeds of C. illinoinensis should not be sown immediately after harvest. For seeds stored for more than 2 months, a 3-5 ℃ cold storage was best; and as storage time increased, germination rate decreased. The germination rate improved remarkably with phytohormones and stratification. Among stratification methods, soaking the seeds in phytohormone for 8 d and then stratifying them indoors for 35 d, produced seed germination rates as high as 91%.%对美国山核桃Carya illinoensis,种子分别进行了不同储藏时间、不同储藏方式和不同植物生长调节物质浸种,结合层积处理的种子发芽试验.结果表明:美国山核桃种子不宜即采即播,种子储藏在2个月以上用3~5℃冷库保存效果较好,随着储藏时间的推移,发芽率会降低;植物生长调节物质浸种和层积催芽可显著地提高美国山核桃种子的发芽率.层积催芽前最好用植物生长调节物质浸种8 d,然后在室内层积催芽35 d,发芽速度最快,田间发芽率可达91%.

  12. 美国山核桃叶的抗菌作用%Antimicrobial activity of Carya illinoensis leaves

    Institute of Scientific and Technical Information of China (English)

    叶申怡; 阮夏云; 樊莹; 张欢帅; 井长怡; 毛胜凤; 张爱莲

    2014-01-01

    对美国山核桃Carya illinoensis叶进行体外抗菌作用研究,以期开发出一种新型的天然杀菌剂.美国山核桃叶经体积分数为75%乙醇提取后,采用系统溶剂法将抽提物分为石油醚、氯仿、乙酸乙酯、正丁醇和水等5个不同极性的提取物.采用滤纸片法,检测以上提取物对黄曲霉菌Aspe rgillus flay us,根霉菌Rhzopus oryzae,青霉菌Penicillium sp.,酵母菌Saccharomyces cerevisiae,大肠埃希菌Escherichia coli和枯草杆菌Bacillus subtilis等的抑菌效果,并计算各提取物对真菌的半数抑菌质量浓度(CE50).结果表明:乙酸乙酯提取物对青霉菌、根霉菌、黄曲霉菌和枯草杆菌均表现出明显的抑菌效果且差异显著(P<0.05,P<0.01),抑菌圈直径均值分别为9.18,10.86,8.26,10.18mm,但对于黄曲霉菌石油醚提取物(CE50 0.91 g·L-1)的抑菌效果优于乙酸乙酯提取物(CE50>200 g·L-1);而正丁醇提取物对酵母菌和大肠埃希菌表现出明显的抑菌效果且差异显著(P<0.05,P<0.01),其抑菌圈直径均值分别为11.13,8.83 mm,但对于大肠埃希菌水提物的抑菌效果优于正丁醇提取物,其抑菌圈直径均值为9.13 mm.综上,美国山核桃叶的正丁醇提取物和乙酸乙酯提取物抑菌效果最佳.针对这一实验结果,可以根据防治对象不同,采用不同的提取方法和工艺,研发专菌专治的天然杀菌剂,以提升杀菌剂的作用效果.

  13. 牛卵形巴贝斯虫巢式PCR诊断方法的建立及初步应用%Establishment and application of nested PCR assay for detection of Babesia ovata

    Institute of Scientific and Technical Information of China (English)

    黄国明; 贾立军; 薛书江; 张守发

    2012-01-01

    根据GenBank上发表的牛卵形巴贝斯虫CCTη基因序列设计合成2对巢式PCR引物,建立牛卵形巴贝斯虫巢式PCR诊断方法,对该方法的最佳反应条件进行了筛选,并进行了特异性、敏感性及临床样本检测试验。结果表明,建立的巢式PCR方法外引物扩增牛卵形巴贝斯虫基因组片段的长度为1 008bp,内引物为537bp;该方法扩增不出牛瑟氏泰勒虫、弓形虫、犬新孢子虫基因组DNA;最低检测DNA含量为16fg;通过对46份临床样本的检测,该巢式PCR较常规PCR阳性检出率高8.7%。本试验为牛卵形巴贝斯虫病的诊断提供了一种更为特异、敏感的检测技术。%In order to develop the nested-PCR diagnostic method for rapidly detection of Babesia ovata,two pairs of nested PCR primers were designed according to Babesia ovata DNA sequence.The optimum reaction conditions were screened,and sensitive,special and clinical samples test were carried out.The result showed that Babesia ovata genome DNA could be amplified by nested PCR,and Toxoplasma gondii,Theileria sergenti,Neospora canium genomic DNA could not.The minimum amount of DNA to detect is 16 fg.The detection of 46 clinical samples,indicated that the positive detection rate of nested PCR is 8.7% higher than conventional PCR.The established method of nested-PCR assay was sensitive and specific,and could be used to rapidly detect Babesia ovata.

  14. 云南省薄壳山核桃良种基地建设工艺设计探讨%Technological Design of Carya Illinoensis Fine Variety Bases Construction in Yunnan Province

    Institute of Scientific and Technical Information of China (English)

    张盼盼; 李云

    2012-01-01

    指出了云南省薄壳山核桃良种基地建设是发展薄壳山核桃种植的基础性工作,分析了生态环境建设和林业可持续发展趋势。从品种选择、生产规模、技术路线、工艺流程和技术特点及优势等5个方面提出了薄壳山核桃良种基地建设工艺设计中的采穗圃和采种园的具体工艺设计。%The construction of Carya illinoensis fine variety bases in Yunnan Province is a basic work for developing Carya illinoensis planting. It is beneficial to improve the environment and forestry sustainable development. The key points in the technological design of Carya illinoensis fine variety bases construction including technological designs for cutting orchards and seeds collection plots are scale of production, technical route, technological process, technical features and advantages.

  15. Mycorrhizal diversity, seed germination and long-term changes in population size across nine populations of the terrestrial orchid Neottia ovata.

    Science.gov (United States)

    Jacquemyn, Hans; Waud, Michael; Merckx, Vincent S F T; Lievens, Bart; Brys, Rein

    2015-07-01

    In plant species that rely on mycorrhizal symbioses for germination and seedling establishment, seedling recruitment and temporal changes in abundance can be expected to depend on fungal community composition and local environmental conditions. However, disentangling the precise factors that determine recruitment success in species that critically rely on mycorrhizal fungi represents a major challenge. In this study, we used seed germination experiments, 454 amplicon pyrosequencing and assessment of soil conditions to investigate the factors driving changes in local abundance in 28 populations of the orchid Neottia ovata. Comparison of population sizes measured in 2003 and 2013 showed that nearly 60% of the studied populations had declined in size (average growth rate across all populations: -0.01). Investigation of the mycorrhizal fungi in both the roots and soil revealed a total of 68 species of putatively mycorrhizal fungi, 21 of which occurred exclusively in roots, 25 that occurred solely in soil and 22 that were observed in both the soil and roots. Seed germination was limited and significantly and positively related to soil moisture content and soil pH, but not to fungal community composition. Large populations or populations with high population growth rates showed significantly higher germination than small populations or populations declining in size, but no significant relationships were found between population size or growth and mycorrhizal diversity. Overall, these results indicate that temporal changes in abundance were related to the ability of seeds to germinate, but at the same time they provided limited evidence that variation in fungal communities played an important role in determining population dynamics.

  16. Influência da administração da Plantago ovata (fibra dietética) na proteção da parede colônica em colite inflamatória induzida por ácido acético: estudo estereológico experimental em ratos The influence of Plantago ovata (dietetic fiber) admininstration on the colonic wall protection in the acetic acid induced inflammatory colitis: an experimental stereologic study in rats

    OpenAIRE

    Eduardo Cortez Vassallo; Andréa Povedano; João de Aguiar Pupo Neto; Francisco Lopes Paulo

    2007-01-01

    OBJETIVO: Estudo do papel da fibra dietética (Plantago ovata) na proteção e recuperação da parede intestinal de ratos submetidos a colite inflamatória induzida por ácido acético. MÉTODO: Utilizados 30 ratos Wistar machos, com peso variando entre 260 - 300g, distribuidos em três Grupos de 10 indivíduos: O Grupo I (n10) ou Grupo Controle, recebeu dieta padrão durante todo o experimento. O Grupo II (n10) ou Grupo Colite, recebeu igualmente, dieta padrão durante todo o experimento. O Grupo III (n...

  17. 湖南山核桃油的提取工艺及其特性研究%Study on Extracting Technology and Properties of Carya hunanensis Oil

    Institute of Scientific and Technical Information of China (English)

    彭湘莲; 付红军; 杨超梅

    2012-01-01

    采用索氏提取法从湖南山核桃( Carya hunarensis)仁中提取山核桃油,设计单因素试验和正交试验考察各因素对山核桃油提取率的影响.优化的工艺条件为以石油醚为提取溶剂,料液比1:9(m:V,g/mL)、提取温度55℃、提取时间5h,在该条件下湖南山核桃油的提取率为68.5%.提取所得山核桃油呈浅金黄色,酸值 (KOH)0.400 mg/g、碘值(I2)105.5 g/100、皂皂化值(KOH) 185 mg/g,折光指数n20d 1.4704.采用气相色谱对山核桃油的脂肪酸组成进行了测定,结果显示山核桃油中总不饱和脂肪酸的质量分数为92.16%,其中油酸的质量分数为68.03%.%Oil was extracted from Carya hurumensis by soxhlel extracting method. Single factor tests and orthogonal experiment were obtained to study the effects of several extracting factors on the yield of oil. The optimum extracting conditions were petroleum ether as extraction soivenl; solid to liquid ratio, 1=9 (m'-V, g/mL); extraction temperature 55 'C and extraction time S h. The yield of C. hunanensis oil was 68.5% under these conditions. Extracted oil was light golden brown, with acid value(KOH) of 0.400 mg/g. iodine value(I2) of 105.5 g/100 g, saponification value(KOH) of 185 mg/g and refractive index rif of 1.470 4. According to GC test, the total unsaturated fatty acid contributed for 92.16%(mass fraction) of the obtained oil, among which oleic acid accounted for 58.03%.

  18. Aqueous extract of pecan nut shell (Carya illinoensis [Wangenh.] K. Koch) exerts protection against oxidative damage induced by cyclophosphamide in rat testis.

    Science.gov (United States)

    Benvegnu, Dalila M; Barcelos, Raquel C S; Roversi, Katiane; Boufleur, Nardelli; Pase, Camila S; Trevizol, Fabiola; Segat, Hecson J; Dias, Verônica T; Dolci, Geisa S; Antoniazzi, Caren T D; Reckziegel, Patricia; Lima, Fernanda; de Lima, Luiz A R; de Carvalho, Leandro M; da Silva Junior, Valdemiro A; Burger, Marilise E

    2013-01-01

    This study investigated the protective effect of pecan nut (Carya illinoensis) shell aqueous extract (AE) on the oxidative and morphological status of rat testis treated with cyclophosphamide (CP). Wistar rats received water or AE (5%) ad libitum for 37 days. On day 30, half of each group received a single intraperitoneal administration of vehicle or CP 200 mg/kg. After 7 days, the animals were killed and their testis removed. Rats treated with CP presented reduced levels of lactate dehydrogenase, vitamin C, and gluthatione, as well as decreased catalase activity, increased lipid peroxidation levels and superoxide dismutase activity, no alteration in carbonyl protein levels, and a loss of morphological testicular integrity. In contrast, cotreatment with pecan shell AE totally prevented the decrease of lactate dehydrogenase and vitamin C levels and catalase activity and partially prevented the depletion of gluthatione levels. Moreover, it totally prevented the increase in superoxide dismutase activity and lipid peroxidation levels and maintained testicular integrity. These findings show the protective role of pecan shell AE in CP-induced testicular toxicity. The use of this phytotherapy may be considered to minimize deleterious effects related to this chemotherapy.

  19. ChemicalP roperties of Plantatoi n Wood in Carya illinoensis%薄壳山核桃人工林木材的化学性质1)

    Institute of Scientific and Technical Information of China (English)

    米沛; 徐斌; 潘新建

    2014-01-01

    Three 30-year Carya illinoensis plantation woods were studied on the chemical components and their variation pattern. The cellulose crystallinity was determined by X-ray diffraction spectrum.In Carya illin oenis s, the contentsof the benzene-alcohol extracts, 1%NaOH extracts, klason lignin, holocellulose,α-cellulose, nitric acid-ethanol cellulose and ash were 1.92%, 16.14%, 23.80%, 82.77%, 45.2%, 48.83%and 0.74%, respectively.The cellulose crystallinity was 38.64%. Besides,the variationtrend of chemical components along axial direction among different sampleskept consistent, where the contents of benzene-alcohol extracts, ash, 1%NaOH extracts and lignin increased progressively, while those ofα-cel-lulose, nitric acid-ethanol cellulose, and holocellulose decreased progressively.The cellulose crystallinity increased firstly and then declined.The sequence of cellulose crystallinity from great o small was middle part, stem base and tip.%以30年生薄壳山核桃人工林木材为对象,对其化学成分及其变异规律进行研究,并运用X射线衍射法对纤维素结晶度进行测定分析。结果表明:薄壳山核桃木材中,苯醇抽提物质量分数为1.92%,1%NaOH抽提物质量分数为16.14%,Klason木质素质量分数为23.80%,综纤维素质量分数为82.77%,α-纤维素质量分数为45.20%,硝酸乙醇纤维素质量分数为48.83%,灰分质量分数为0.74%,纤维素结晶度为38.64%。薄壳山核桃木材的化学组分轴向变化株间保持一致,其中,苯醇抽提物、1%NaOH抽提物、灰分、木质素的质量分数轴向递增,α-纤维素、硝酸乙醇纤维素、综纤维素的质量分数轴向递减;纤维素结晶度在轴向上呈先增后减趋势,从大到小依次为中部、基部、梢部。

  20. 美国山核桃根段育苗试验%Experiment on Seedling Cultivation by Root of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    常君; 姚小华; 王开良; 夏根清; 徐永星; 倪德良

    2009-01-01

    对美国山核桃(Carya illinoensis)进行不同粗度根段和不同ABT6浓度浸泡处理育苗试验,结果表明,各处理苗木高度、地径、出苗率均与实生苗对照表现出显著性差异,种根粗度减小,各指标均呈现下降趋势.>1.2~1.6 cm径级根段的出苗率和苗木地径最大,分别达到67.5%和0.52 cm,苗木高度则以>0.8~1.2 cm粗度径级根段最大,为14.98 cm,但无论苗木地径还是苗木高度均小于同期播种的实生苗,苗高仅为对照(31.40cm)的47.73%,地径仅为对照(0.72 cm)的71.68%.采用根段育苗虽可节省种子成本,但苗木生长相对较为纤弱,需培育多年才能达到当年实生苗的平均水平,且取根不易,不适于规模化扩繁.因此,从工效、成本和生长情况综合考虑,美国山核桃育苗应优先选择种子繁殖而非根段育苗.%Experiment was conducted on seedling cultivation by root of Carya illinoensis with different size of root and treated by different concentration of ABT6 in the demonstration bases of Jiande city, Zhejiang province. The results showed that the seedling height, basal diameter, seedling rate of treated by ABT6 had significant difference with the control, and had positive relation with diameter of mother root. Seedling rate and basal diameter from mother root of 0.8-1.2cm could top to 67.5% and 0.52cm. Seedling height reached 14.98 from mother root of 0.8-1.2. But basal diameter and seedling height form mother root was only 71.68% and 47.73% of that from seed. Compared to seedling cultivation by seed, that by root had disadvantages such as weak growth and difficult to get mother root. Therefore, seedling cultivation from seed was recommended.

  1. Experiment on Grafting of 17 Carya illinoensis Clones%薄壳山核桃17个无性系嫁接试验

    Institute of Scientific and Technical Information of China (English)

    翁春余; 邵慰忠; 叶浩然; 洪旗; 张浦山; 常君; 徐奎源

    2012-01-01

    对薄壳山核桃17个无性系进行同一无性系2年生播种苗砧木嫁接试验,结果表明,各无性系间嫁接成活率差异显著(P<0.05),成活率最高的是YLJ23,达88.17%,最低的是YLJ6仅为24.20%;嫁接苗新梢当年生长量差异也极显著,新梢最长的是YLJ6,为87cm,最短的是YLJ27,为42cm;嫁接苗接穗基部直径最粗的是ⅥJ6和YLJ35,为1.21cm,最细的是YLJ27,为0.94cm.%Experiments were carried out on grafting of 17 Carya illinoensis clones on 2-year seedlings (same cultivar) as stock in Jiande, Zhejiang province. The results showed that the survival and conservation rate among clones was significantly different(P < 0.05 ), the highest was 88.17%, and the lowest 24.20%. It had great difference of new shoot growth among 17 clones, with the longest of 87cm, the shortest of 42cm. Scion base diameter growth topped 1.21cm, with 0.94cm the smallest.

  2. Effects of Fertilization on Growth Performance of Carya illinoensis%配方施肥对美国山核桃树体生长的影响

    Institute of Scientific and Technical Information of China (English)

    肖良俊; 王曼; 宁德鲁; 张雨; 李勇杰; 毛云玲

    2012-01-01

    以云南新平县4年生美国山核桃为研究对象,采用了3个因素3个水平的iF交试验设计,分析施肥对地径、树高、冠幅的影响.结果表明,地径增粗的最佳施肥比例为N100P100K200,增粗最快的处理为最慢的1.77倍;树高增长的最佳施肥比例为N200P100K200,增长最快的处理为最慢的2.32倍;冠幅增大的最佳施肥比例为N400P200K200,增量最快的为最慢的1.83倍.%Taking the 4 years old Carya illinoensis trees planted in Xinping county of Yunnan province as the study materials,adopting the orthogonal test design of three factors and three levels,the effects of fertilization on growth of basal diameter,tree height and crown width were studied and analyzed.The results showed that the optimum fertilizer combination for basal diameter and height growth were N100P100K200 and N200P100R200 respectively,the growth were 1.77 times of the worst fertilization treatment; the optimum fertilizer combination for crown width growth was N400P200K200,the growth were 1.8 times of the worst fertilization treatment.

  3. Absorption of SO/sub 2/ by pecan (Carya illinoensis (Wang) K. Koch) and alfalfa (Medicago sativa L. ) and its effect on net photosynthesis

    Energy Technology Data Exchange (ETDEWEB)

    Sisson, W.B.; Booth, J.A.; Throneberry, G.O.

    1981-06-01

    Absorption rates of SO/sub 2/ by pecan (Carya illinoensis (Wang) K. Koch) leaflets exposed to 2.6, 5.2, and 7.8 mg SO/sub 2/ m/sup -3/ were measured over a 2 h period. SO/sub 2/ was rapidly absorbed by the leaflets in all treatments during the initial 30-50 min; the rate of uptake decreased to a rather constant level thereafter. Total SO/sub 2/ absorbed during the 2 h period was 15.6, 25.6, and 38.9 nmol cm/sup -2/ for the low, medium, and high SO/sub 2/ concentrations, respectively. Reductions in net photosynthetic rates were proportional to ambient SO/sub 2/ concentrations and total SO/sub 2/ absorbed. Partial photosynthetic recovery occurred in all treatments during a 2 hr post-treatment period and full recovery occurred during a 12 h dark period. Exposure to SO/sub 2/ resulted in slight increases in stomatal and boundary layer resistances to CO/sub 2/ and substantial increases in residual resistances. Absorption rates of SO/sub 2/ by alfalfa (Medicago sativa L.) exposed to 5.2 mg SO/sub 2/ m/sup -3/ for 1 h were approximately double those of pecan exposed to the same ambient SO/sub 2/ concentration. Alfalfa net photosynthetic rates were reduced 74% after 1 h exposure to 5.2 mg SO/sub 2/ m/sup -3/ while a depression of 42% occurred in pecan.

  4. Effects of different fertilization treatments on Carya illinoesis growth%不同施肥配方对美国山核桃生长的影响

    Institute of Scientific and Technical Information of China (English)

    杜洋文; 曾博; 邓先珍; 徐永杰; 陈春芳; 聂明

    2015-01-01

    In order to provide technical support for high-yield cultivation of Carya illinoensis, effects of different fertilization treatments on growth of C. illinoensis, taking chicken manure, pig manure and compound fertilizer as basis fertilizers. The results showed that applying 5 kg pig manure per plant had the most signiifcant effects on tree height, ground diameter, first-order branch length and diameter in C. illinoensis. And then the treatments of applying 5 kg chicken manure and applying 2.5 kg chicken manure + 2.5 kg pig manure had better effects, and CK had the worst effects. All treatments had no signiifcant effects on clear length, grafting incision diameter and ifrst-order branch number.%为给美国山核桃丰产栽培提供技术支持,以鸡粪、猪粪、复合肥为肥料,研究不同施肥配方对美国山核桃生长的影响。结果表明,施用猪粪5 kg/株对美国山核桃树高、地径和一级枝条长度和粗度增长效果最为明显,其次为鸡粪5 kg/株和鸡粪2.5 kg/株+猪粪2.5 kg/株2个处理,对照处理效果最差。各处理对枝下高、嫁接口径粗和一级分枝数无显著影响。

  5. 10个美国山核桃品种的引种研究初报%Introduction of ten Carya illionoensis cultivars

    Institute of Scientific and Technical Information of China (English)

    习学良; 范志远; 邹伟烈; 廖永坚; 董润泉

    2006-01-01

    美国山核桃Carya illinoensis是世界重要的干果油料树种.为丰富国内良种资源,1999年从美国引种10个品种接穗.通过系统观测分析,以丰产性、坚果质量和叶片抗黑斑病Xanthomonas juglandis能力等3方面加权评分,初步筛选出7个丰产、优质和抗病的品种.5年生树上高接第3年全部结果,第5年产坚果3.8~6.2 kg·株-1,坚果易取整仁,出仁率为55%~60%,仁含脂肪719.4~761.3 g·kg-1、氨基酸(有17种)69.4~106.8 g·kg-1及丰富的矿质元素等;脂肪中不饱和脂肪酸≥90%,其中单不饱和脂肪酸比多不饱和脂肪酸高3.0~5.3倍(与油橄榄Olea europaea油相似),优于核桃Juglans sigillata油.筛选出的7个品种,可在云南中亚热带气候区域低海拔山地推广种植.表6参13

  6. Antinociceptive and antiedematogenic effect of pecan (Carya illinoensis) nut shell extract in mice: a possible beneficial use for a by-product of the nut industry.

    Science.gov (United States)

    Trevisan, Gabriela; Rossato, Mateus F; Hoffmeister, Carin; Müller, Liz G; Pase, Camila; Córdova, Marina M; Rosa, Fernanda; Tonello, Raquel; Hausen, Bruna S; Boligon, Aline A; Moresco, Rafael N; Athayde, Margareth L; Burguer, Marilise E; Santos, Adair R; Ferreira, Juliano

    2014-01-27

    Abstract Background: Interest in pecan (Carya illinoensis) nut shells, a by-product of the nut industry, has increased due to its anti-inflammatory and antioxidant activities. The goal of this study was to evaluate the antinociceptive and antiedematogenic activity and the mechanisms of the pecan shell aqueous extract (AE). Methods: First, we performed fingerprinting of C. illinoensis AE. The antinociceptive and antiedematogenic effects of AE intragastric (i.g.) administration in mice (male Swiss mice 20-30 g) were evaluated using the acetic acid test or after subcutaneous (s.c.) paw injection of diverse transient receptor potential ankyrin 1 (TRPA1) agonists, including hydrogen peroxide (H2O2), allyl isothiocyanate, or cinnamaldehyde. We also observed AE antinociceptive and antiedematogenic effects after carrageenan s.c. paw injection and measured H2O2 production. Moreover, we observed the development of adverse effects after AE i.g. treatment. Results: The high-performance liquid chromatography fingerprinting of AE showed the presence of rutin. AE or rutin i.g. treatment produced antinociception in the acetic acid test and reduced the nociception and edema mediated by H2O2 s.c. hind paw injection or nociception induced by other TRPA1 agonists. Moreover, AE or rutin reduced the hyperalgesia, edema, and H2O2 production induced by carrageenan s.c. paw injection. No motor, gastric, or toxicological alterations were observed after AE administration. Conclusions: Collectively, the present results show that AE and its constituent rutin produced antinociceptive and antiedematogenic action in models of acute and persistent inflammatory nociception and it seems to be related to the inhibition of TRPA1 receptor activation.

  7. 薄壳山核桃嫩枝扦插技术%A study on softwood cutting technique for Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    董筱昀; 黄利斌

    2013-01-01

    Experiments on seedling cultivation of Carya illinoensis were carried out with different treatments including ages of ortet,dates of cutting and IBA concentration.The results showed that all the factors mentioned above could significantly influence the cutting rooting rate.The experiment data indicated that under the test condition of natural illumination and automatic intermittent spraying,the rooting rate were higher than others when the cuttings were propagated after sprouted for 70 days and the softwood cuttings were collected from 1 or 2 aged seedlings.The rooting rate was up to 78.34%-82.17% by 4 000 mg/L IBA tachy-dipped and the rooting index was up to 1.5 by 8 000 mg/L IBA.%以薄壳山核桃嫩枝为试验材料,分别比较了1、2年生实生苗,3、5年生嫁接苗等4种母树材料、5种不同扦插时间和6种IBA浓度处理的扦插生根效果.结果表明:在全光喷雾试验条件下,树龄、扦插时间、IBA浓度对扦插生根均有显著影响,以1~2年生实生苗上部生长70 d的嫩枝作插穗,使用4 000 mg/L浓度的IBA速蘸处理,扦插生根率最高,为78.34%~82.17%;使用8 000 mg/L浓度的IBA速蘸处理生根效果指数最高,为1.50.

  8. Culture-Independent Study of the Late-Stage of a Bloom of the Toxic Dinoflagellate Ostreopsis cf. ovata: Preliminary Findings Suggest Genetic Differences at the Sub-Species Level and Allow ITS2 Structure Characterization

    Directory of Open Access Journals (Sweden)

    Vitor Ramos

    2015-06-01

    Full Text Available Available genomic data for the toxic, bloom-forming, benthic Ostreopsis spp. are traditionally obtained from isolates rather than from individuals originally present in environmental samples. Samples from the final phase of the first reported Ostreopsis bloom in European North Atlantic waters (Algarve, south coast of Portugal were studied and characterized, using a culture-independent approach. In the first instance, a microscopy-based analysis revealed the intricate complexity of the samples. Then, we evaluated the adequacy of commonly used molecular tools (i.e., primers and nuclear ribosomal markers for the study of Ostreopsis diversity in natural samples. A PCR-based methodology previously developed to identify/detect common Ostreopsis species was tested, including one new combination of existing PCR primers. Two sets of environmental rRNA sequences were obtained, one of them (1052 bp with the newly tested primer set. These latter sequences encompass both the ITS1-5.8S-ITS2 region and the D1/D2 domain of the LSU rRNA gene, leading us to an accurate identification of ITS2. In turn, this allowed us to predict and show for the first time the ITS2 secondary structure of Ostreopsis. With 92 bp in length and a two-helix structure, the ITS2 of this genus revealed to be unique among the dinoflagellates. Both the PCR approach as the phylogenetic analyses allowed to place the Ostreopsis cells observed in the samples within the O. cf. ovata phylospecies’ complex, discarding the presence of O. cf. siamensis. The (phylogenetic results point out a certain level of nucleotide sequence divergence, but were inconclusive in relation to a possible geographic origin of the O. cf. ovata population from the Algarve’s bloom.

  9. Cultivation Actualities of Carya illinoensis in Anhui Province And Its Development Strategies%安徽省长山核桃栽培现状及发展对策

    Institute of Scientific and Technical Information of China (English)

    王陆军; 周米生; 龚明; 肖正东

    2014-01-01

    In this paper, based on a complete survey and analysis of the cultivation actualities of Carya illinoensis in Anhui Province and focused on the existing problem s in its cultivation and developm ent, som e developm ent strategies were put forward from the aspects of scientific planning,technical support, fine cultivars and strong plantlets, dem onstration of high-yield plantations and technical training in order to provide reference for the sound and rapid developm ent of Carya illinoensis throughout A nhui Province.%在对安徽省长山核桃栽培现状全面调查分析的基础上,针对目前栽培发展过程中存在的问题,从科学规划、科技支撑、良种壮苗、丰产示范、技术培训等方面提出了发展对策,为全省长山核桃健康快速的发展提供参考。

  10. 不同育苗容器和规格对长山核桃苗木生长的影响%Effects of Seedling Containers of Different Materials and Dimensions on the Growth of Carya illinoensis Seedlings

    Institute of Scientific and Technical Information of China (English)

    金继良

    2015-01-01

    本试验通过测量苗高和地径来研究不同材质、不同规格容器对长山核桃育苗的影响。结果表明:不同材质、不同大小的育苗容器对长山核桃的苗高和地径均有影响。其中,白色无纺布材质营养钵最适合长山核桃苗高和地径的生长。%In the experiment the effects of seedling containers of different materials and dimensions on the growth of Carya illinoensis seedlings were studied by measuring the seedling heights and basal diameters. The results showed that the seedling containers of different materials and dimensions had effects on the seedling heights and basal diameters, of which the non-woven fabric nutrition pots were the most suitable for the height and basal growth of Carya illinoensis seedlings.

  11. Dicty_cDB: Contig-U12512-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available ome... 46 5.1 1 ( AM425166 ) Vitis vinifera contig VV78X047503.4, whole genome... 46 5.1 1 ( AF303771 ) Carya... illinoinensis atpB-rbcL intergenic spacer, ... 46 5.1 1 ( AF303770 ) Carya tomentosa atpB-rbcL intergenic ...spacer, chlo... 46 5.1 1 ( AF303769 ) Carya glabra atpB-rbcL intergenic spacer, c...hlorop... 46 5.1 1 ( AF303768 ) Carya ovata atpB-rbcL intergenic spacer, chloropl... 46 5.1 1 ( AF303767 ) Carya... myristiciformis atpB-rbcL intergenic spacer... 46 5.1 1 ( AF303766 ) Carya cordiformis atpB-rbcL interg

  12. 山核桃幼胚不定芽的诱导%Adventitious bud induction with immature embryo of Carya cathayensis

    Institute of Scientific and Technical Information of China (English)

    万俊丽; 黄坚钦; 夏国华; 张启香; 黄丽春

    2009-01-01

    以山核桃Carya cathayensis花后60,75和100 d的幼胚为外植体,金属硫蛋白(MT)复合维生素+20 g·L-1葡萄糖+10 mg·L-1腺嘌呤+500 mg·L-1水解酪蛋白作为基本培养条件,研究山核桃幼胚的不同发育时期,不同植物生长调节物质及基本培养基对山核桃不定芽诱导的影响.结果表明,山核桃花后60 d的幼胚培养56 d后未形成不定芽,花后100 d的幼胚比花后75 d的幼胚诱导产生的不定芽多而且长;植物生长调节物质对山核桃不定芽诱导以0.010 0 mg·L-14-氨基-3,5,6-三氯吡啶羧-酸(Picloram)+3.0 mg·L-116-苄氨基腺嘌呤(6-BA)为启动培养基较佳;当6-BA质量浓度一定时,随Picloram质量浓度增加不定芽数量差异不显著;当Picloram质量浓度一定时,随6-BA质量浓度增加,产生不定芽数逐渐上升,但当6-BA达10 mg·L-1时,不定芽出现明显玻璃化现象;2,4-D的添加不利于外植体不定芽产生;MS(Murashige and Skoog)是最佳基本培养基.图1表2参16

  13. 薄壳山核桃无性系开花物候特性观测%A Study on the Flowering Phenology of Clone Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    常君; 李川; 王开良; 姚小华; 辜夕容; 任华东

    2012-01-01

    The flowering phenology, period of flowering phase, quantity of pistillate flowers, and the a-mount of staminate flowers were observed. The results showed that different clone Carya illinoensis had different flowering phenology. As to the flowering phase, the largest difference among the 6 clone pistillate flowers reached 10 days, and 9 days among the 6 clone staminate flowers. The smallest difference among the pistillate flowers was 2 days, and 1 day among the staminate flowers. There were significant differences among the quantity of pistillate flowers, as well as the amount of staminate flowers (P <0. 01 ) , clone No. 21, 28 and 104 had large quantity of pistillate flowers, which can be used as the main high yield breeds for planting. Clone No. 5, 27 and 35 had large amount of staminate flowers, which can be used as pollination breeds.%通过对6个薄壳山核桃无性系开花物候、花期长短、雌花开花数量以及雄花序数量等进行观测.结果表明,不同薄壳山核桃无性系雌雄花开花物候差异明显,6个无性系间雌花差异最长为10 d,差异最短为2 d;6个无性系间雄花差异最长为9d,差异最短为1d.6个薄壳山核桃无性系雌花、雄花序数量差异极显著(P<0.01),无性系21号、28号和104号雌花开放数量大,可以将其定为高产、丰产的主栽品种;无性系5号、27号、35号雄花序数量大,可以将其定为授粉品种,为其它花期相遇的无性系授粉用.根据试验的研究结果,无性系5号、27号、35号可以作为无性系21号、28号和104号的授粉品种.

  14. Flood Tolerance in Plants: A State-of-the-Art Review

    Science.gov (United States)

    1979-08-01

    however, that seedlings of species that typically leaf out late in the season (e.g., green ash (Fraxinus pennyslvanica), water hickory ( Carya ...Tolerant* Water hickory Cyar uqua4lea Pecan C. illinoensis Butt onbush Cephalan~thus occidentali s SweP-11 privet Foresticra acuminata (Ireen as’h Fra~xinus...rtegundo C’i lVeT, Inapi e A. auechariinuin PLerlil Carya ilinino’ntci tI-cuel UAcI Fnr lI iru:ý £imrx :;y .vardsiei. Cottonwood. I [ulpi~ d..oitO~dtc

  15. Effect of simulated different types of acid rain on physiological characteristics in Carya cathayensis%模拟不同类型酸雨胁迫对山核桃生理特征的影响

    Institute of Scientific and Technical Information of China (English)

    陶欣桐; 江洪; 郭凯

    2013-01-01

    随着经济的发展,中国酸雨污染类型由硫酸型向硫酸、硝酸复合型转变,为了解转变对我国陆地植物生态系统的影响,以山核桃(Carya cathayensis)为试验对象,研究模拟硫酸型酸雨(SAR)、硝酸型酸雨(NAR)及混合型酸雨(MAR)对山核桃的生理特征影响.试验测定了山核桃在不同酸雨类型下,生长量,叶绿素含量和光合反应参数在pH值为5.6,4.0,2.5时的数据.结果表明:SAR处理下,山核桃的株高、基径在pH 5.6时高于另两个梯度,NAR处理下,生长量的大小为pH5.6处理<pH 2.5处理<pH 4.0处理;MAR处理下,对株高的胁迫明显高于SAR和NAR;在相同pH值下对叶绿素的胁迫影响表现为NAR> MAR> SAR,有显著差异,但三种酸雨类型各梯度间的叶绿素含量差异不显著;三种酸雨对山核桃的光合作用都产生抑制,净光合速率在pH2.5处理下小于pH5.6处理,对表观量子效率(AQE)、最大净光合速率(Pnmax)、光饱和点(LSP)都表现为MAR< NAR.@@研究结果表明NAR和MAR对植物的生理特征影响较SAR更复杂,混合型酸雨对植物的株高和叶绿素含量的胁迫都大于硫酸型酸雨.%With economic development,the type of acid rain pollution in China changed from the sulfuric acid to sulfuric acid and nitric acid complex,due to the increase of nitrogen content in the acid rain,which may lead to the change of terrestrial plant ecosystem.In this paper,Carya cathayensis was used as the experimental material to study the effect of simulated sulfuric acid rain (SAR),nitric acid rain (NAR) and the mixed acid rain (MAR) on physiological characteristics in Carya cathayensis.In experimental design,in addition to three types of acid rain,three gradients of pH value as pH 2.5 (severe acid rain stress),pH 4.0 (moderately acid rain stress),pH 5.6 (acid rain control treatment) were also designed.The growth parameters,chlorophyll content and photosynthetic reaction paameters of Carya cathayensis under three

  16. Little Blue Prehistory: Archaeological Investigations at Blue Springs and Longview Lakes, Jackson County, Missouri. Volume 1

    Science.gov (United States)

    1989-01-01

    cottonwood Juglans nigra black walnut Carya spp. hickory Quercus alba white oak _. macrocarpa bur oak Q. stellate post oak Q. bicolor swamp white oak Q...velutina black oak _. palustris pin oak Q. rubra red oak Q. marilandica black jack oak Ulmus spp. elm Celtis occidentalis hackberry Morus spp. mulberry... nigra ), and hickory in dense and open stands of timber in this zone along with hazel, and plum and cherry scrub brush. Primary plant foods were

  17. Community structure and floristic composition of Quercus fusiformis and Carya illinoinensis forests of the Northeastern Coastal Plain, Coahuila, Mexico Estructura y composición florística de los bosques de Quercus fusiformis y Carya illinoinensis de la planicie costera del noreste, Coahuila, México

    Directory of Open Access Journals (Sweden)

    Juan Antonio Encina-Domínguez

    2011-06-01

    Full Text Available In order to describe community structure and richness in oak and walnut forests occurring along the San Rodrigo, San Diego, Escondido and Arroyo de las Vacas rivers on the Northeastern Coastal Plain (NE Coahuila, Mexico, we established 30 1 000-m² circular plots, where we measured diameter at breast height (DBH and tree heights. Tree regeneration and herb and shrub stratum were assessed in 5 2-m² quadrats per site. A total of 48 species distributed in 29 families were recorded. Families with the largest richness were Poaceae, Asteraceae, and Malvaceae. For the oak forest, tree stratum density and basal area values were 386 stems/ha and 24.36 m²/ha, respectively, whereas for the walnut forest the corresponding values were 302 stems/ha and 21.26 m²/ha. The species with the highest relative importance values were Quercus fusiformis (59.48% and Carya illinoinensis (57.58%. Total tree richness was 14 species, the most common ones being Celtis reticulata and Diospyros texana, followed closely by C. illinoinensis and Q. fusiformis. Anthropogenic impact appears to result in a poor regeneration reflected as a low sapling density, as well as in the reduction and fragmentation of these communities; in turn, this process has led to intrusions of species typical of the xerophytic Tamaulipan Thorn Scrub. Further studies are needed on the regeneration of the dominant species of these forests in order to describe their dynamics and to promote their preservation.Con la finalidad de conocer la estructura y la composición florística de los bosques de encino y nogal situados a lo largo de los ríos San Rodrigo, San Diego, Escondido y Arroyo de las Vacas en la planicie costera nororiental (NE de Coahuila, México, se establecieron 30 parcelas circulares de 1 000 m² en las que se midió el DAP y la altura de las especies arbóreas; además, se evaluó la regeneración de las especies arbóreas y el estrato herbáceo y arbustivo en 5 cuadros de 2 m² por sitio

  18. Preliminary Study on Seedling Production of Introduced Carya iUinoensis in Yangtze-Huaihe Hilly Region of Anhui%江淮丘陵地区薄壳山核桃引种育苗研究初报

    Institute of Scientific and Technical Information of China (English)

    宰步龙; 孙刚

    2011-01-01

    In the process of seedling production of massively introduced Carya illinoensis in Yangtze-Huaihe hilly region of Anhui for the first time, different technical measures regarding the seed treatment, soil improvement and seedling tending etc., were taken to ensure the successful introduction and improve the seedling growth. The effects of different treatment factors on seedling growth in height, basal diameter and crown and seedling survival rates were analyzed. Preliminary results showed that in Yangtze-Huaihe hilly region of Anhui with sticky yellow-brown soil as its zonal soil, Carya illinoensis could be introduced and grown. Soft improvement helped improve the seedling growth. Different sowing times with short intervals did not affect the seedling growth significantly. In the same batch of seeds, larger ones grew better than smaller ones.%在江淮丘陵地区首次较大规模引进薄壳山核桃的育苗过程中,为提高引种成功率和苗木生长量,在种子处理、土壤改良和苗期管理等方面采取了不同的技术措施,并分析不同处理因素对苗高、地径、树冠生长及成苗率的影响。初步研究结果表明:在粘盘黄棕壤为主的江淮丘陵地区,可以进行薄壳山核桃引种育苗;土壤改良有利于提高苗木生长量;间隔不长的不同播种时间对苗木生长没有显著影响;同批次的大粒种子生长量比小粒种子大。

  19. 薄壳山核桃优质砧木的培育技术%Cultivation techniques of fine rootstock in Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    邵慰忠; 李川; 常君; 张浦山; 王开良; 任华东; 倪德良

    2011-01-01

    In order to shorten the cultivation time of rootstock in Carya illinoensis, and to improve the survival rate of grafting, effects of some factors on height and ground diameter of C. Illinoensis seedlings were analyzed, for example, the seed size, seed storage, seed treatment before sowing and concentration of fertilizer. The results showed that seed size had great effect on ground diameter and height of seedling. In the processing of seedling culture, plump seeds should be choosed in preference. Germination rate of seed storaged in wet sand was 8.4% higher than in dry sand. Different containers and concentrations of fertilizer had significant effect on increment of seedling. Different treatments of radicle had not any insignificant effect on increment of seedling. Different treatments of cutting main root had insignificant effect on increment of seedling. Height and ground diameter of the seedlings with main roots was 97.68% and 26.32% higher than that with main roots, respectively. The cultivation techniques of fine rootstock in C. Illinoemis were summarized based on the results and production experience.%为了缩短薄壳山核桃砧木的出圃时间,提高其嫁接成活率,就薄壳山核桃大颗粒种子与小颗粒种子、种子的不同贮藏方法、不同胚根尖与容器处理、不同截根处理与施肥浓度对1年生薄壳山核桃实生苗的高度与地径生长的影响情况进行了对比试验.结果表明:种子大小对苗木的地径和高度均有较大的影响,在育苗过程中,应优先选择颗粒饱满的大粒种子进行育苗;用湿沙贮藏的种子其发芽率比干藏的高8.4%;不同育苗容器、不同施肥浓度对苗木生长量有明显的影响;不同胚根处理方法对苗木生长量也有影响,但影响不明显;不同截主根措施对苗木生长量的影响很大,不截主根苗的苗高和地径比截主根苗分别高97.68%与26.32%.并结合试验结果与生产经验总结提出了薄壳山

  20. 改性山核桃外果皮/竹刨花板制造工艺研究%Preparation Technology of Bamboo Particleboard Using Laccase Treated Exocarp of Cathay Hickory

    Institute of Scientific and Technical Information of China (English)

    王进; 张飞英; 韩素芳; 刘亚群

    2015-01-01

    Bamboo particleboards were prepared and the performances were measured with laccase treating exocarp of Cathay Hickory and adding modifi ed exocarp powder to reduce the glue content for bamboo particles bonding. The manufacturing technology was studied and the optimum parameters were: 10% of exocarp dosage, 60 U/g of laccase dosage, 6% of adhesive content, 1% of waterproof agent dosage, 27% of mat moisture content, 200℃ of hot pressing temperature, 3 MPa of pressing pressure, and 16 min of pressing time.%以漆酶改性处理的山核桃外果皮,代替部分胶黏剂添加到竹刨花中,研究山核桃外果皮粉用量、胶黏剂用量、漆酶用量、防水剂用量,板坯含水率、热压温度、热压压力、热压时间对山核桃外果皮/竹刨花板性能的影响;确定最优化的制板工艺参数:山核桃外果皮添加量10%、漆酶用量60 U/g、施胶量6%、防水剂用量1%,板坯含水率27%、热压温度200℃、热压压力3 MPa、热压时间为16 min。

  1. Cultural Resources Survey of EABPL Off-Site Borrow Areas, Levee Items E- 64, E-76, and E-84A, Iberville, Iberia, and Assumption Parishes, Louisiana

    Science.gov (United States)

    1994-07-01

    ovata), hackberry (Celtis laevigata ), sweetgum and blackgum (Liqudambar styaciflua and Nyssa sylvatica), pecan (Carya illinoiensis), magnolia...mayhaw ( Crataegus opaca), and waxmyrtle (Myrica cerifera) (Gibson 1978:114-115). The bottomland forests are dominated by the water oak (Quercus nigra...Subdominants include the sweet gum (Liquidambar styacflua), hackberry (Celtis laevigata ), and live oak (Quercus virginiana). Other forest species

  2. 梓木蒸汽爆破过程传热数值模拟初探%A preliminary study on numerical simulation of heat-transfer mechanism during Catalpa ovata wood steam explosion process

    Institute of Scientific and Technical Information of China (English)

    郝晓峰; 刘文金; 李贤军; 吕建雄; 孙德林; 陈新义

    2014-01-01

    Numerical simulation of heat transfer mechanism during Catalpa ovata wood steam explosion pretreatment was studied by taking into account the effects of internal moisture, moist air and solid wood frame materials on heat transfer. One-dimensional heat transfer mathematical model was established based on Fourier law, the numerical calculation program for this model was compiled based on Finite Difference Scheme and Formula Translator Fortran, and the accuracy of this model was validated by the experiments. The results show that, this model can more accurately reflect the Catalpa ovate wood steam explosion process, and quantitively analyze the variation of temperature and pressure with time in tested wood.%针对梓木蒸汽爆破过程中传热机理的数值模拟进行研究。考虑木材内部水分、湿空气与固相骨架物质的对传热的影响,基于傅里叶导热定律,建立一维梓木爆破过程中传热数学模型,利用有限差分数学思想结合Fortran语言编写该模型数值计算程序,并通过实验验证了模型的准确性。结果表明该模型可以较为准确的反应梓木蒸汽爆破过程中的加热过程,能够定量分析板材内的温度、压力随时间变化的规律。

  3. Study on the Planting Density Dependence of Pliant Growth of Catalpa ovata G. Don Leaves%梓树叶片可塑生长的密度依赖性研究

    Institute of Scientific and Technical Information of China (English)

    胡满平; 赵秋玲; 戴秀芳; 冯小芹

    2013-01-01

      对梓树进行不同密度的移栽,研究其叶片可塑生长的密度依赖性以及主要叶片性状因子之间的关系。结果表明,随种植密度增加,叶面积、叶干物质含量、生物量呈减少趋势;比叶面积呈先增大后减小趋势。比叶面积与叶片厚度、叶干物质含量之间均呈极显著的负相关,与相对叶绿素含量之间相关性不显著。叶片厚度和叶干物质含量与其它叶性因子的关系较为复杂,在不同种植密度下两者既表现出正相关关系,又表现出负相关关系。%  Catalpa ovata G. Don was transplanted in different planting desity, and the density dependence of leave pliant growth and the relationship between the traits factor of leaves were studied. The results showed that the differences of the leaf area, biomass, specific leaf area, leaf dry matter content were significant with the density increasing . There was a negative correlation between the specific leaf area and leaf thickness, leaf dry matter content, and there was no significant correlation between specific leaf area and chlorophyll content . The analysis on traits factor of leaves showed that the correlation of Leaf thickness and leaf dry matter content and other leaf traits were more complex relationship, and a positive correlation between both, but also exhibits a negative correlation under the different planting density.

  4. Mycorrhizal inoculation of pecan seedlings with some marketable truffles

    Directory of Open Access Journals (Sweden)

    Gian M. Benucci

    2013-12-01

    Full Text Available Pecan is the common name of Carya illinoinensis (Wangenh. K. Koch, an ectomycorrhizal tree native to North America, also frequently known as hickory. Mycorrhizal inoculations of pecan seedlings with: Tuber aestivum Vittad., T. borchii Vittad., T. indicum Cooke & Massee, and T. lyonii Butters are described and discussed.

  5. Ecological Investigation of a Greentree Reservoir in the Delta National Forest, Mississippi.

    Science.gov (United States)

    1981-09-01

    mature, dominant forest trees such as oaks (Quercus spp.), bitter pecan (Carya aquatica), sugarberry (Celtis laevigata ), and green ash (Fraxinus...Water hickory Celtis laevigata Sugarberry Cephalanthus occidentalis Common buttonbush Cocculus carolin, Carolina snailseed Commelina diffusa Dayflower 0...Cornus foemina Southern swamp dogwood Crataegus viridus Green hawthorn Diodia virginiana Buttonweed Diospyros virginiana Common persimmon Eupatorium

  6. Prescribed burning effects on soil enzyme activity in a southern Ohio hardwood forest: A landscape-scale analysis

    Science.gov (United States)

    Ralph E. J. Boerner; Kelly L. M. Decker; Elaine K. Sutherland

    2000-01-01

    We assessed the effect of a single, dormant season prescribed fire on soil enzyme activity in oak-hickory (Quercus-Carya) forests in southern Ohio, USA. Four enzymes specific for different C sources were chosen for monitoring: acid phosphatase, beta-glucosidase, chitinase and phenol oxidase. Postfire acid phosphatase activity was generally reduced by burning and...

  7. Environmental Impact Study of the Northern Section of the Upper Mississippi River, St. Croix River Pool.

    Science.gov (United States)

    1973-11-01

    Shrubs (Cont’d.) JUGLANDACEAE I Carya cordifo2ViS Bitternut hickory P P LEGUMINOSAE : see FABACEAE MORACEAE i Morus rubra Red mulberry P OLEACEAE... LEGUMINOSAE Amorpha canescens (Prairie Lead Plant) Astragalus crassicarpus (Ground Plum) Melilotus alba (White Sweet Clover) Petalosternum candidum

  8. Grounds Conservation Management Plan (1982-1991), Fish and Wildlife Management Plan (1982-1991), Forest Resource Management Plan (1979-1988).

    Science.gov (United States)

    1985-06-01

    NSWVC 14P Ř-147 TABLE B-3-1. RECOMMENUE) TREE SPECIES (CONTINUED) Species Other Characteristics Thornless Honey Locust ( Gleditsia ornamental; fruits...eaten by rabbit, squirrel, triacanthos var. inermis) and quail *Live Oak (Quercas virginiana) Ornamental S .. Hickory (Carya spp.) ornamental; provide

  9. Shaw Air Force Base Capital Improvement Program Environmental Assessment

    Science.gov (United States)

    2010-05-01

    condensate Piedmont three-awned grass ─ SC Sandridges Carex decomposita Cypress-knee sedge ─ SC Swamps and lake margins on floating logs Carya...Cypress-knee Sedge G3 Corya myrlstlciformis Nutmeg Hickory G4 Chomaedophne colyculato leatherleaf GS Cyperus Ieconte/ Leccnte Flatsedge G4

  10. 四种山核桃种仁含油率及脂肪酸组成比较分析%Oil Yield and Fatty Acid Composition of Nuts of Four Species in Carya Family

    Institute of Scientific and Technical Information of China (English)

    张鹏; 钟海雁; 姚小华; 王开良; 王亚萍; 常君

    2012-01-01

    Oil content and fatty acid composition were analysised using nuts of four species in Carya family from Yuhang, Jiande, Fuyang, Ningguo, Jinzhai and Hunan as materials. The results showed that the oil content in nut was the highest in C. hunanensis, 63.88%, followed by that in C. cathayensis, 62.72%, and that in C. dabieshanensis was the lowest, 51.00%.There was significant difference in oil content among the above four species (P<0.05%) .The main fatty acids in these nut oil were palmitic acid, patmitoleic acidt stearic acid, oleic acid, linoleic acid, linolenic acid and arachidonic acid. The saturated fatty acid content was the highest in C. hunanensis, while that in Carya cathayensis was the lowest; the monounsaturated fatty acid content was the highest in C. dabieshanensis, and that in C. illinoensis was the lowest; polyunsaturated fatty acids level in C. illinoensis was the highest and that in C. dabieshanensis was the lowest.%分析测定采集自浙江省余杭、建德、富阳,以及安徽省宁国、金寨,湖南省的4种山核桃果实含油率及其脂肪酸组成和含量.结果表明,山核桃种仁含油率为以湖南山核桃为最高,达63.88%;浙江山核桃次之,为62.72%;最低的是大别山山核桃,为51.00%.经一元方差分析得出4种山核桃含油率存在极显著差异(p<0.05%).山核桃脂肪酸主要由棕榈酸、硬脂酸、棕榈烯酸、油酸、亚油酸和顺-1 1-二十碳烯酸组成,饱和脂肪酸含量最高的是湖南山核桃,最低的是浙江山核桃;单不饱和脂肪酸含量最高的是大别山山核桃,最低的是美国山核桃;不饱和脂肪酸含量最高的是美国山核桃,最低的是大别山山核桃.

  11. 美国山核桃穗条含水率对嫁接成活率的影响%Effects of Cutting Wood Moisture Content on Grafting Survival Rate of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    李仙兰; 杨新; 杨云广; 冯丽娜; 苏嗣杰

    2013-01-01

    在大理州林业科学研究所试验基地分别对采集后贮藏8h、24 h、48 h、72 h的美国山核桃穗条进行含水率测定,并用不同含水率的穗条进行嫁接试验.结果表明,穗条含水率对美国山核桃嫁接成活率有显著影响.穗条采集后贮藏8h含水率为33.45%,嫁接成活率为28.8%;贮藏24 h含水率为32.65%,嫁接成活率最高,为61.3%;贮藏48 h含水率为31.44%,嫁接成活率为43.8%;贮藏72 h含水率为31.07%,嫁接成活率最低,为25.0%.穗条蜡封最佳时间为采集后1~2d.%Cutting wood moisture content of Carya illinoensis stored for 8 h,24 h,48 h,72 h were determined respectively in test base of Forest Research Institute of Dali,and grafting tests by using those cutting wood also have been conducted.The results showed that the effects of cutting wood moisture content on grafting survival rate of Carya illinoensis were significant.Moisture content of cutting wood stored for 8 h was 33.45%,graft survival rate was 28.8% ; Stored for 24 h was 32.65%,graft survival rate was 61.3% ; Stored for 48 h was 31.44%,graft survival rate was 43.8 % ; Stored for 72 h was 31.07%,graft survival rate was 25.0%.one or two days after collection was the best time to wax seal for cutting wood.

  12. Principal component analysis for major economic characteristics of Carya illinoensis and selection of superior cultivars%美国山核桃主要经济性状的主成分分析及良种选择

    Institute of Scientific and Technical Information of China (English)

    杨建华; 李淑芳; 范志远; 习学良; 邹伟烈; 刘娇; 潘莉

    2011-01-01

    Based on a specimen correlation matrix, eight major economic characteristics, including fruit shape coefficient, average nut weight, shell thickness of the nut, kernel ratio, kernel weight, kernel fat content, protein content, and fruit yield per square meter of projected tree crown area, for 12 cultivars of Carya illinoensis were determined using a principal component analysis. Results according to more than 83.99% of the cumulative variance, showed that the three principal components and their functional equations were: kernel ratio, average nut weight, kernel fat content. Key principal component values of various cultivars were: kernel ratio(43.329%). Superior cultivars were determined as average nut weight with the results being similar to a practical phenotype. [Ch, 1 fig. 4 tab. 6 ref.]%应用主成分分析法,由样本相关矩阵出发,时12个美国山核桃Carya illinoensis样本的8个主要经济性状[坚果果形系数、平均坚果质量、坚果壳厚、坚果出仁率、核仁质量、核仁脂肪、蛋白质、单位面积(m2)树冠投影面积产果量]进行分析,以性状的累积方差贡献率达到83.99%为标准,确定了3个反映美国山核桃主要经济性状的主成分及其主成分的函数式,并通过计算样本的重要主成分值,对供试样本进行比较,进而选择综合经济性状优良的样本,其结果与品种的实际表现相符.表明用主成分分析法可以对美国山核桃主要经济性状进行综合评选.

  13. Experimental analysis on photosynthesis of different ages Carya illinoensis%不同树龄美国山核桃光合作用的试验与分析

    Institute of Scientific and Technical Information of China (English)

    吕芳德; 黄菁; 和红晓

    2011-01-01

    The photosynthetic rates of various tree ages Carya illinoensis were investigated from aspects of light response and CO2 response.Meanwhile, the comparisons between bearing branch and unfruitfulness branch were conduced of photosynthetic rate, stomatal conductance, intercellular concentration and transpiration rate.The results show that the middle-aged trees developed fully, had high and stable photosynthetic rate, and better photosynthetic capacity; the comparative results of leaves photosynthetic rate between fruiting branch and unfruitfulness branch indicated that the presence of fruit can promote the photosynthesis rate.%从光响应和CO2响应两个方面研究不同年龄阶段的美国山核桃的光合速率,同时对美国山核桃结果枝和未结果枝的净光合速率、气孔导度、胞间浓度、蒸腾速率进行了比较研究.结果表明:-中龄树发育充分,光合速率大且稳定,光合能力强;果实的生长能促进叶片的光合作用.

  14. Comparison of Leaf Photosynthetic Physiological Characteristics in Vive Carya illinoensis Varieties%5种美国山核桃苗叶片光合生理特性比较

    Institute of Scientific and Technical Information of China (English)

    凌骅; 黄坚钦; 温国胜; 王正加; 杨先裕; 袁紫倩; 郑超超; 沈一凡

    2014-01-01

    In this study,a field experiment was conducted to compare photosynthetic physiological characteristics and the chlorophyll fluorescence parameters in leaves among five Carya illinoensis varieties, including Farley, Colby, Shoshoni,Cheyenne and Mandan. The results showed that there were significant (P<0. 05) or highly significant (P<0. 01)differences in minimal fluorescence (Fo),maximum fluorescence (Fm),PSⅡ potential activity (Fv/Fo)and non-photochemical quenching (NPQ) among the five varieties. The Fo and Fm of Shoshoni were higher than that of the other cultivars. The PSⅡ primary energy conversion efficiency (Fv/Fm) and PSⅡ potential activity (Fv/Fo) of Mandan were higher than those of the others,while the value of NPQ was lower. The light compensation point (LCP)of Mandan was significantly lower than that of the other varieties,indicating that it had a strong ability of using low light. Mandan and Shoshoni had higher maximum net photosynthetic rate (Amax)and relative chlorophyll content (SPAD). Results of the correlation analysis showed that there were significant positive correlations between Fv and Fv/Fm,Amax and SPAD. A significantly negative correlation was found between NPQ and Fv/Fo.

  15. 薄壳山核桃良种‘肖肖尼'引种及栽培要点%Introduction and Culture Technique of Carya illinoensis Fine Variety 'Shoshoni'

    Institute of Scientific and Technical Information of China (English)

    生静雅; 朱海军; 张普娟; 陈亚辉; 刘广勤

    2013-01-01

    ‘肖肖尼'由美国农业部农业研究中心L.D.Romberg 1972年育成发布,‘Odom'בEvers'.‘肖肖尼'为雌先型品种(Ⅱ型).文章从植物学特征、物候期、生长性状、果实品质、抗逆性等方面介绍了‘肖肖尼'的引种表现,并概括了其早果、丰产等重要措施.%'Shoshoni' ('Odom' × 'Evers') is a Carya illinoensis cultivar that was bred and released by the Agricultural Research Service,U.S.Department of Agriculture(USDA) in 1972.It is protogynous (type Ⅱ).The introduction performance of 'Sboshoni' was introduced from aspects of botanical characteristics,phenological phase,growth traits,fruit quality,resistance,and important measures of abundant production,early fruit setting were summarized.

  16. 三峡库区兴山县引种美国山核桃试验初报∗�%Preliminary Report on Introduction Experiment of Carya illinoensis in Xingshan County in Three Gorges Reservoir

    Institute of Scientific and Technical Information of China (English)

    陈春芳; 王长斌; 邓先珍; 徐永杰; 鲁黎; 袁裕胜

    2014-01-01

    美国山核桃是著名优良干果油料树种。从浙江、云南等省引进性状表现优良的6个美国山核桃品种在长江三峡库区兴山县栽培试验,观测其引种表现,并对树体生长物候期、生长结果习性及丰产性抗性等进行了初步分析,结果表明:在良好的管理条件下产量和质量与原产地基本相同,适宜于三峡库区兴山县栽培。%Carya illionoensis is a famous species used for dry fruits and oil.Six varieties with super characteristics,which were introduced from Yunnan and Jiangsu Province and were planted in Xingshan County in Three Gorges Reservoir.A primary investigation was conducted on the adaptation growth,fruiting habit,fertility and resistance of the six verities. The result showed that the six varieties had the same yield and quality as that in good conditions in their origin and were suitable cultivated in Xingshan County in Three Gorges Reservoir.

  17. 不同施肥处理对核桃幼苗光合特性的影响%Effects of Different Fertilization on Photosynthetic Characteristics of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    程乾斗; 肖志东

    2016-01-01

    One-year-old pecan seedlings were adopted as materials to investigate the influences of different fertilization treatments on the photosynthetic characteristics. The results showed that under the different fertilization levels the net photosynthetic rate (Pn), transpiration rate (Tr) and stomatal conductance (Gs) would increase with the increase of the fertilization dose. However, the internal CO 2 concentration (Ci) was reduced with the increase of fertilization dose. Therefore, within a certain range the treatments of increased fertilization dose could improve the ability of photosynthesis of Carya illinoensis leaves.%通过测定不同施肥剂量对1年生核桃实生苗光合特性的影响可知:核桃叶片的净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(Gs)均随着施肥剂量的增加而增加,而胞间CO2浓度(Ci)则随着施肥剂量的增加而减少,证明在一定范围内增加施肥剂量水平可以提高核桃叶片的光合作用能力。

  18. Evaluation of Toxicological Effects of an Aqueous Extract of Shells from the Pecan Nut Carya illinoinensis (Wangenh.) K. Koch and the Possible Association with Its Inorganic Constituents and Major Phenolic Compounds.

    Science.gov (United States)

    Porto, Luiz Carlos S; da Silva, Juliana; Sousa, Karen; Ambrozio, Mariana L; de Almeida, Aline; Dos Santos, Carla Eliete I; Dias, Johnny F; Allgayer, Mariangela C; Dos Santos, Marcela S; Pereira, Patrícia; Ferraz, Alexandre B F; Picada, Jaqueline N

    2016-01-01

    Background. Industrial processing of the pecan nut Carya illinoinensis K. Koch generated a large amount of shells, which have been used to prepare nutritional supplements and medicinal products; however, the safe use of shells requires assessment. This study evaluated the toxic, genotoxic, and mutagenic effects of pecan shell aqueous extract (PSAE) and the possible contribution of phenolic compounds, ellagic and gallic acids, and inorganic elements present in PSAE to induce toxicity. Results. Levels of inorganic elements like K, P, Cl, and Rb quantified using the Particle-Induced X-Ray Emission method were higher in PSAE than in pecan shells, while Mg and Mn levels were higher in shells. Mice showed neurobehavioral toxicity when given high PSAE doses (200-2,000 mg kg(-1)). The LD50 was 1,166.3 mg kg(-1). However, PSAE (50-200 mg·kg(-1)) and the phenolic compounds (10-100 mg·kg(-1)) did not induce DNA damage or mutagenicity evaluated using the comet assay and micronucleus test. Treatment with ellagic acid (10-100 mg·kg(-1)) decreased triglyceride and glucose levels, while treatments with PSAE and gallic acid had no effect. Conclusion. Pecan shell toxicity might be associated with high concentrations of inorganic elements such as Mn, Al, Cu, and Fe acting on the central nervous system, besides phytochemical components, suggesting that the definition of the safe dose should take into account the consumption of micronutrients.

  19. 天牛危害与机械损伤对山核桃挥发物的诱导差异%Comparison of Volatiles fromCarya cathayensis under Different Conditions

    Institute of Scientific and Technical Information of China (English)

    王佩星; 徐华潮; 李俊

    2014-01-01

    Volatiles were collected by dynamic headspace from healthy, mechanical damaged and insect damagedCarya cathayensis. Analysis on composition of volatiles by GC-MS. The result demonstrated that 10 types of components were detected both from healthy and mechanical damaged trees, but among them, 5 types were different. While 17 types of components were detected from insect damaged tree, among them, 10 components were different with that from mechanical damaged tree.%对健康、受机械损伤及具有天牛幼虫新鲜排粪孔的山核桃树进行顶空吸附采样,研究山核桃在不同条件处理下的挥发物差异。结果表明,不同处理山核桃之间挥发物种类有明显差异,健康山核桃释放的挥发物种类10种,机械损伤植株10种,但二者间有5种成分不同,而天牛幼虫蛀干的植株有17种,与机械损伤的相比有10种成分不同。

  20. Structure and Novel Biomineralization of Mnemiopsis Leidyi and Beroe Ovata Lithocyte Concretions (lcs) as Revealed by Polarization Lc-Pol Scanning Electron Microscopy (sem) and Electron Dispersion Spectroscopy (eds)

    Science.gov (United States)

    Moss, A.

    2016-02-01

    Ctenophore statocysts have multicellular statoliths borne on the tips of balancer compound cilia (Curr. Biol. 24:R951; Biol. Bull. 227:7). Lithocyte concretions (LCs) were prepared by three methods: 1) statocysts were microsurgically collected and washed w/0.2 µm filtered sea water (FSW), followed by 5 diH2O rinses in a deep well dish (DWD); 2) statocysts were treated with 50% Chlorox/FSW to release the statolith/LCs; 3) statocysts were fixed in 2.5% glutaraldehyde or 1% paraformaldehyde-2.5% glutaraldehyde in 10 mM pH 7.8 HEPES-buffered FSW, and statoliths and LCs microsurgically released. LCs for SEM were glued to stubs, C-stabilized and Pt-coated to a thickness of 8 nm and viewed at 10 kVe. LCs for EDS were applied to carbon tape on aluminum stubs and analyzed by EDS at 3 and 10 kVe. SEM and EDS were performed on a Zeiss Supra 40 VP equipped with an EDS detector controlled by INCA software (Oxford). Results were compared against compounds of known elemental composition. LCs examined by LC-POL revealed no birefringence (BR). LCs viewed by SEM were either a lumpy mass (M. leidyi) or smooth ellipsoid (B. ovata). LCs on carbon tape typically shattered and released overlapping, layered, multi-oriented crystals. EDS of LC crystals from both species collected by all methods lacked Ca, Mn and Mg. Predominant elements were Na, K, O and S in ratios suggesting that LCs contain mixed sodium/potassium sulfates. The unique composition of ctenophore statoliths may have been critical for the 600+ million years persistence of these organisms (J. exp. Biol. 218:592) including survival through multiple global extinctions and related ocean acidifications. Thanks to L. Kerr, R. Oldenbourg, S. Mehta, A. Verma, M. Tran, A. Kuzirian and S. Tamm for stimulating discussion and technical advice. EDS stds compounds were curtesy of L. Amaral-Zettler, J. Huber and K. Gribble (Bay Paul Center/MBL). Funding: AU PIL Program, NSF-EPS-1158862.

  1. Identification of Wheat-Aegilops Ovata Derivatives Using SSR Markers and Evaluation of Their Powdery Mildew Resistance%小麦-卵穗山羊草衍生后代的SSR分子标记鉴定和白粉病抗性评价

    Institute of Scientific and Technical Information of China (English)

    吴红坡; 王亚娟; 王长有; 吉万全

    2012-01-01

    Aegilops species carrying the U or/and M genomes represent a prominent source of useful genes for wheat breeding. We generated 19 wheat-Aegilops ovata derivatives through hybridization between common wheat and Aegilops ovata. Four hundred SSR (simple sequence repeat) markers were used to investigate the polymorphisms among parental lines, Chinese Spring, Shaanyou 225 and Aegilopsovata, of which 341 markers (85.25%) could amplify bands in Aegilopsovata, and 20 of them (5%) showed specific bands in Aegilopsovata, and were applied to investigate germplasm in- heritance of Aegilops ovata in wheat-Aegilops ovata derivatives. The results showed that 10 markers could amplify specific bands in the 19 derivatives, indicating that all these 19 derivatives inherited germplasms from Aegilops ovata and these 10 SSR markers could be used in further identification of next generations. We also conducted powdery mildew resistance evaluation on the 19 derivatives, and 16 of them are immune to powdery mildew like Aegilops ovata, one of their parents, but not like the other two parental lines, Chinese Spring and Shaanyou 225, which are highly susceptible to powdery mildew, indicating that the powdery mildew resistance in the 16 derivatives were explicitly inherited from Aegilops ovata.%山羊草属植物是普通小麦改良过程中重要的有益基因来源,小麦的许多抗病虫、抗逆基因都来源于山羊草属植物。本研究利用杂交和回交的方法,成功获得了19株小麦-卵穗山羊草衍生后代,实验选取均匀分布于小麦各条染色体的SSR标记400个,对三个亲本(中国春、卵穗山羊草和陕优225)以及19株衍生后代进行分子标记特异性分析,结果表明,341个标记可以在卵穗山羊草中扩增出条带,说明SSR标记在山羊草中位点丰富;20个标记可以在卵穗山羊草中扩增出特异条带,说明在卵穗山羊草中有不同于另外两个亲本的特异SSR位点;将20个在卵穗山羊

  2. 进口美国山核桃种子性状及其发芽调控的研究%Traits and Germination Test of ImportedCarya illinoinensis Seed

    Institute of Scientific and Technical Information of China (English)

    徐翠霞; 谭鹏鹏; 兖攀; 彭方仁; 陈文静; 李健

    2016-01-01

    Traits of imported wildCarya illinoinensis seeds were determined and germination experiments were conducted with L9 (34) orthogonal design. The results demonstrate that mean single nut weight was 2.68g, vertical and transverse diameter was 2.7 and 1.4cm with 42.8% kernel. Water content of seeds was about 13% with 99.9% of purity and 96% of quality seed percentage, but open field germination rate had only 41.3%. The experiment showed that different treatments had significant effect on germination rate and force. Treatment A2B1C2 (3 days treatment with 100mg/L of GA3) topped to 86.00% and 79.86% of germination rate and force. Range analysis indicated that treatment of 3 days with 200 mg/L of GA3 would have the best effect of germination rate.%以野生美国山核桃(Carya illinoensis)引进种子为试材,对其种子特性进行研究,并采用L9(34)正交试验方法进行催芽试验。结果表明,该种批果实较小,单果重平均值为2.68 g,纵径和横径分别为2.7、1.4 cm,出仁率42.8%;该种批含水率在13%左右,净度和优良度分别为99.9%和96%,但该种批发芽率仅41.3%。催芽试验结果表明,不同催芽处理对发芽率和发芽势的影响均存在显著性差异(p<0.05),在已知组合中,A2B1C2(100 mg/L的GA3处理3 d)的发芽率和发芽势最好,分别达86.00%和79.86%。极差分析优化可知,用200 mg/L的GA3浸种3 d催芽的发芽率效果最好。用于砧木的进口野生美国山核桃种源,在前一年秋季就应准备好种子,冬季进行低温沙藏层积,春季在播种前用200 mg/L的GA3进行浸种3 d催芽,可以获得高出芽率,并生长迅速。

  3. 薄壳山核桃八角主要害虫的天敌类群及其分布%Natural Enemies and Their Distribution of Main Pest Insects of Carya illinoensis and Illicium verum

    Institute of Scientific and Technical Information of China (English)

    焦晓旭; 陈鹏; 苏一; 杨建华; 段兆尧; 泽桑梓

    2011-01-01

    Natural enemies of main pest insects of Carya illinoensis and Illicium verum were investigated at the main plantation regions of the two economic tree species in Yunnan. Twenty-five parasitoids and forty-five predatory natural enemies of the main pest insects of the two tree species were collected. Distribution features of these natural enemies were analyzed in the paper. The results provided basis data for utilizing natural enemies to control pest insects of the two economic tree species.%在云南省薄壳山核桃和八角主要种植区进行这2种干果经济林主要害虫的天敌类群调查,共获得主要害虫寄生性天敌25种,捕食性天敌45种,对天敌类群的分布规律进行了分析.研究结果表明,云南省薄壳山核桃和八角林内主要害虫的天敌资源比较丰富,天敌的类群及数量与棘木受病虫的危害程度有一定的相关性,即在危害严重的种植园中,天敌的数量也相对较多.利用天敌资源控制主要害虫应是可行的.

  4. Preliminary report of leader branch cutting trails in Carya illinoensis cutting orchard%美国山核桃采穗圃定干修剪试验初报

    Institute of Scientific and Technical Information of China (English)

    熊新武; 李俊南; 陈宏伟; 习学良; 刘恒鹏; 陈勤; 杨素琼

    2011-01-01

    In order to understand and improve the germination and growth abilities of the Carya illinoensis cutting orchard, pruning trials were carried out at stem of 40, 60, 80 cm height, taking no pruning as CK. The results showed that leader branch cutting height of 60 cm could significantly improve grown branch rate and scion utilization rate in fine clone cutting orchard of C. Illinoensis, which were respectively 61. 05% and 56. 54%. Based on the results of the trails, some technical measures were summaried to improve C. Illinoensis scion utilization rate.%为了解和提高美国山核桃良种无性系采穗圃植株定干修剪后的萌芽能力和抽枝能力,对采穗圃植株分别进行了定干40、60、80 cm的修剪试验,以不定干处理的为对照.结果表明:定干60 cm修剪,能明显提高美国山核桃良种无性系采穗圃内植株的成枝率和接穗利用率,其成枝率和接穗利用率分别为61.05%和56.54%.并在试验基础上总结出了提高美国山核桃接穗利用率的定干修剪技术措施.

  5. 10个不同品种的薄壳山核桃脂肪含量及脂肪酸组成分析%Fat content and fatty acid composition of ten Carya illinoensis cultivars

    Institute of Scientific and Technical Information of China (English)

    俞春莲; 王正加; 夏国华; 黄坚钦; 刘力

    2013-01-01

    以10个不同品种薄壳山核桃Carya illinoensis为试材,采用气相色谱法,测定不同品种的薄壳山核桃的脂肪相对含量及脂肪酸组成成分.测定结果表明:核桃仁中的脂肪相对含量为69.11%~78.19%,出仁率为36.79%~59.47%,脂肪中不饱和脂肪酸>90.00%,其中以油酸最高,其次是亚油酸、棕榈酸、硬脂酸、亚麻酸、花生酸,且油酸和亚油酸存在极显著负相关关系(P<0.01),不同品种的薄壳山核桃油脂肪酸组成相同,但脂肪酸相对含量有显著差异(P<0.05),其单不饱和脂肪酸(油酸)相对含量为73.01%~58.76%;多不饱和脂肪酸以亚油酸为主,相对含量为32.20%~19.69%,且出油率与出仁率呈极显著的正相关关系(P<0.01),同出籽率和果皮厚度没有明显的关系.

  6. Correlation Between Pruning of Maternal Carya illinoensis Plants and Sprouting in the Maternal-Scion Plots%山核桃采穗圃母树修剪与成枝的相关性

    Institute of Scientific and Technical Information of China (English)

    贺娜; 马婷; 郎南军; 肖良俊; 熊新武; 王高升; 李甜江

    2012-01-01

    对山核桃母树枝条进行不同程度的修剪,比较不同修剪程度下萌芽、抽枝、出穗的数量及质量,并对其相关性进行分析.结果表明:存芽数与修剪程度呈显著负相关,修剪越轻存芽数量越多;成枝数和有效枝条数与修剪程度呈正相关,重度修剪的成枝数量最多,有效穗条亦越多.美国山核桃采穗圃母树修剪中,建议采用重度修剪方式.%Different intensities of pruning were conducted to the branches of maternal-scion Carya illinoensis trees to compare the quantity and quality of its bud germination, sprouts and the cuttings obtained, and to conduct the correlation analysis so as to study the influence of pruning on the important indexes of C. illinoensis. The results showed that the number of deposit buds was significantly and negatively correlated with the pruning intensity, i. e. , the lighter the pruning was, the more deposit buds would be. There was positive correlation between the number of branches and the effective scions to be formed and the pruning intensity, i. e. , the heavier the pruning was, the more branches would be formed and more effective scions might be prepared. Heavy pruning was recommended for maternal C. illinoensis trees in the maternal-scion plots.

  7. Aqueous extract from Pecan nut [Carya illinoinensis (Wangenh) C. Koch] shell show activity against breast cancer cell line MCF-7 and Ehrlich ascites tumor in Balb-C mice.

    Science.gov (United States)

    Hilbig, Josiane; Policarpi, Priscila de Britto; de Souza Grinevicius, Valdelúcia Maria Alves; Santos Mota, Nádia Sandrine Ramos; Pedrosa, Rozangela Curi; Block, Jane Mara

    2017-08-11

    In Brazil, use of teas are common for the treatment of many health disorders. Shell extracts of pecan nut (Carya illinoinensis) are popularly taken as tea to prevent diverse pathologies due to their phytochemical composition presenting significant amounts of phenolic substances. Phenolic compounds from pecan nut shell extract have been associated with diverse biological effects but the effect on tumor cells has not been reported yet. The aim of the current work was to evaluate the relationship between DNA fragmentation, cell cycle arrest and apoptosis induced by pecan nut shell extract and its antitumor activity. Cytotoxicity, proliferation, cell death and cell cycle were evaluated in MCF-7 cells by MTT, colony, differential coloring and flow cytometry assays, respectively. DNA damage effects were evaluated through intercalation into CT-DNA and plasmid DNA cleavage.Tumor growth inhibition, survival time increase, apoptosis and cell cycle arrest were assessed in Ehrlich ascites tumor in Balb/C mice. In this work citotoxic effect of pecan nut shell extracts, the induction of cell death by apoptosis and also the cell cycle arrest in MCF-7 cells have been showed. Also an increase in 67% on the survival time in mice with Ehrlich ascites tumor was observed. DNA damage was shown in the CT-DNA, plasmid DNA and comet assays. The mechanism involved in the antitumor effect of pecan nut shell extracts may involve the activation of key proteins involved in apoptosis cell death (Bcl-XL, Bax and p53) and on the cell cycle regulation (cyclin A, cyclin B and CDK2). These results were attributed to the phenolic profile of the extract, which presented compounds such as gallic, 4-hydroxybenzoic, chlorogenic, vanillic, caffeic and ellagic acid, and catechin, epicatechin, epigallocatechin and epicatechin gallate. The results indicated that pecan nut shell extracts are effective against tumor cells development and may be an alternative to the treatment of cancer. Copyright © 2017

  8. Evaluation of Toxicological Effects of an Aqueous Extract of Shells from the Pecan Nut Carya illinoinensis (Wangenh. K. Koch and the Possible Association with Its Inorganic Constituents and Major Phenolic Compounds

    Directory of Open Access Journals (Sweden)

    Luiz Carlos S. Porto

    2016-01-01

    Full Text Available Background. Industrial processing of the pecan nut Carya illinoinensis K. Koch generated a large amount of shells, which have been used to prepare nutritional supplements and medicinal products; however, the safe use of shells requires assessment. This study evaluated the toxic, genotoxic, and mutagenic effects of pecan shell aqueous extract (PSAE and the possible contribution of phenolic compounds, ellagic and gallic acids, and inorganic elements present in PSAE to induce toxicity. Results. Levels of inorganic elements like K, P, Cl, and Rb quantified using the Particle-Induced X-Ray Emission method were higher in PSAE than in pecan shells, while Mg and Mn levels were higher in shells. Mice showed neurobehavioral toxicity when given high PSAE doses (200–2,000 mg kg−1. The LD50 was 1,166.3 mg kg−1. However, PSAE (50–200 mg·kg−1 and the phenolic compounds (10–100 mg·kg−1 did not induce DNA damage or mutagenicity evaluated using the comet assay and micronucleus test. Treatment with ellagic acid (10–100 mg·kg−1 decreased triglyceride and glucose levels, while treatments with PSAE and gallic acid had no effect. Conclusion. Pecan shell toxicity might be associated with high concentrations of inorganic elements such as Mn, Al, Cu, and Fe acting on the central nervous system, besides phytochemical components, suggesting that the definition of the safe dose should take into account the consumption of micronutrients.

  9. Phylogeny and taxonomy of the North American clade of the Ceratocystis fimbriata complex.

    Science.gov (United States)

    Johnson, Jason A; Harrington, Thomas C; Engelbrecht, C J B

    2005-01-01

    Ceratocystis fimbriata is a widely distributed, plant pathogenic fungus that causes wilts and cankers on many woody hosts. Earlier phylogenetic analyses of DNA sequences revealed three geographic clades within the C. fimbriata complex that are centered respectively in North America, Latin America and Asia. This study looked for cryptic species within the North American clade. The internal transcribed spacer regions (ITS) of the rDNA were sequenced, and phylogenetic analysis indicated that most isolates from the North American clade group into four host-associated lineages, referred to as the aspen, hickory, oak and cherry lineages, which were isolated primarily from wounds or diseased trees of Populus, Carya, Quercus and Prunus, respectively. A single isolate collected from P. serotina in Wisconsin had a unique ITS sequence. Allozyme electromorphs also were highly polymorphic within the North American clade, and the inferred phylogenies from these data were congruent with the ITS-rDNA analyses. In pairing experiments isolates from the aspen, hickory, oak and cherry lineages were interfertile only with other isolates from their respective lineages. Inoculation experiments with isolates of the four host-associated groupings showed strong host specialization by isolates from the aspen and hickory lineages on Populus tremuloides and Carya illinoensis, respectively, but isolates from the oak and cherry lineages did not consistently reveal host specialization. Morphological features distinguish isolates in the North American clade from those of the Latin American clade (including C. fimbriata sensu stricto). Based on the phylogenetic evidence, interfertility, host specialization and morphology, the oak and cherry lineages are recognized as the earlier described C. variospora, the poplar lineage as C. populicola sp. nov., and the hickory lineage as C. caryae sp. nov. A new species associated with the bark beetle Scolytus quadrispinosus on Carya is closely related to C

  10. Effects of fertilization on soil N2 O flux in Chinese Carya cathayensis stands%施肥对山核桃林地土壤N2O排放的影响

    Institute of Scientific and Technical Information of China (English)

    陈雪双; 刘娟; 姜培坤; 周国模; 李永夫; 吴家森

    2014-01-01

    目的 N2 O是重要的温室气体,其增温潜势是CO2的298倍,而且破坏臭氧层。森林生态系统是陆地生态系统的重要组成部分,占全球陆地面积的33%,森林土壤N2 O排放对全球气候变化有重大的影响。山核桃( Carya cathayensis)是非常重要的经济林,是山核桃主产区农民的主要经济来源。近年来,农民采取施用无机肥和有机肥等措施来提高山核桃产量,但施肥对山核桃林地土壤N2 O排放的影响尚不清楚,本文以不施肥作为对照( CK),研究单施有机肥( Organic fertilizer, OF)、单施化肥( Inorgnaic fertilizer, IF)、有机无机肥配施( Organic fertilizer and Inorgnaic fertilizer, OIF)对山核桃林地土壤N2 O气体排放的影响。方法利用静态箱-气相色谱法对山核桃林地土壤N2 O排放通量进行了为期1年的测定。采样箱为组合式,即由底座、顶箱组成,均用PVC板做成,面积为30 cm ×30 cm,高度为30 cm。气体样品采集频率基本为每月1次,采集气体时,将采集箱插入底座凹槽(凹槽内径和深度均为5 cm)中,用蒸馏水密封,分别于关箱后0、10、20、30 min采集,用注射器抽样60 mL置于气袋,带回实验室用岛津GC-2014气相色谱仪进行测定,检测器为电子捕获检测器( ECD),检测器温度为250℃。结果山核桃林地不同施肥土壤N2 O排放通量均呈现明显的季节性变化,以夏季最高、冬季最低。土壤N2 O的排放通量在N -0.0210.161 mg/( m2· h)之间变化,不同处理土壤N2 O年累积排放量依次为单施有机肥>单施化肥>有机无机肥配施>对照,对应值分别为N 2.17、2.01、1.94和0.94 kg/( hm2· a)。与对照相比,施肥处理显著增加N2 O的排放(P<0.05),但是各施肥处理N2O排放量之间的差异不显著。单施有机肥和有机无机肥配施处理土壤N2O排放通量与土壤水溶

  11. 不同嫁接时间和砧木处理对薄壳山核桃嫁接成活率的影响%Effects of Grafting Time and Grafting Methods on the Survival Rate of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    赵伟明; 张海军; 施娟娟; 杨先裕; 袁紫倩; 王正加

    2014-01-01

    Choose 1-year-old Carya illinoensis seedling as rootstock and applied cut-grafting method,to study the effects of the grafting time and 3 treatments (transplanting grafts,root pruning cut grafts and not root pruning cut grafts)on survival rate and the growth of shoots.The results showed that:after grafting,the survival rate of 3 treatments appeared a peak at April 8 th .Among of them,the survival rate of transplanting grafts was the highest which was 86.8%.From 28 th May to 28 th July,the survival rate of the three treatments was basically equal (33%-48.6%).The crude and high growth of new branchs was positive correlated to the rootstock’s diameter.%以薄壳核桃1年生大小均匀的实生苗作为砧木,通过移栽、断根和不断根3种处理方式,采用切接法,在不同时间对薄壳山核桃进行嫁接,研究嫁接时间和砧木不同处理方式对嫁接成活率及新梢生长状况的影响。结果表明:4月8号3种砧木处理方式嫁接成活率均出现峰值,其中移栽切接的成活率最高,为86.8%,5月28号到7月28号3种砧木处理方法嫁接成活率基本相同,为33.0%~46.7%。砧木的粗度与新梢的粗生长与高生长之间存在正相关关系。

  12. 贮藏条件对薄壳山核桃4个品系花粉活力影响%Effect of different storage condition on pollen viability of four varieties of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    李雪; 徐迎春; 李永荣; 李晓储

    2011-01-01

    通过TTC染色法测定4个薄壳山核桃品系Mahan(‘马汉')、Western(‘威斯登')、Shoshoni(‘肖肖尼')、‘钟山25'的花粉分别在室温、4℃和-20℃等不同贮藏条件下活力的变化.研究结果表明,-20℃条件下花粉活力贮藏时间最长,到140天时花粉活力仍在50%左右.以花粉活力保持在50%为标准,室温条件下Western和‘钟山25'贮藏时间最长(8天);4℃下Western花粉贮藏时间最长(21天);-20℃下,4个品系贮藏天数都在84天以上,其中Western、'钟山25'贮藏时间最长,达140天.%The dynamics of pollen viability under different storage condition of four Carya illinoensis varieties were assayed by TIC so as to provide technical support for the artificial pollination. The dynamics of pollen viability under room temperature, 4℃and -20℃ storage condition of four varieties were assayed. Results showed that with the storage prolonging, pollen viability gradually decreased. -20℃ storage had the longest pollen viability, which could reach 50% at 140th day. With the pollen viability at 50% as a standard, under room temperature, Western and ' Zhongshan 25' had longest storage time of 8 days; Under 4℃ pollen storage time Western was the longest storage time of 21 days; When storage under -20℃, the storage time of the 4 viabilities were mere than 84 days, in which Western, ‘Zhongshan 25' had longest storage time, up to 140 days.

  13. Analysis on nut quality characters of Carya illinoensis introduced early in Nanjing%南京早期引种的薄壳山核桃不同单株果实品质分析

    Institute of Scientific and Technical Information of China (English)

    朱灿灿; 耿国民; 周久亚; 史锋厚

    2012-01-01

    为给薄壳山核桃良种选育、品种改良及果实分类提供参考依据,采用化学分析法,以南京地区早期引种的薄壳山核桃优良单株为研究对象,在对其外部形态指标分析的基础上,就其果实中的粗脂肪、可溶性糖、淀粉、蛋白质含量等品质特征指标进行了测定与分析.测定分析结果表明:不同单株果实中的粗脂肪含量和可溶性蛋白质含量的差异均达到极显著水平,其可溶性糖和淀粉含量的差异显著;薄壳山核桃果实形态特征指标与相关营养物质指标之间不存在显著相关性.主成分分析结果表明:可将反映果实外部形态和品质特征的12个指标划分为果实大小、果仁出油率、果仁碳水化合物这3个主成分,其累积贡献率达83.19%.%In order to provide reference base for fine cultivar breeding, cultivar improvement and nut classify in Carya illinoensis, taking superior individual plant in C. illinoensis introduced early in Nanjing Area, as subject investigated, based on analyzing morphological indexes, some quality character indexes were determined and analyzed by chemical analysis method. The results of determination and analysis showed that the difference of crude fat and soluble protein contents in nuts reached extremely significant level, soluble sugar and starch content in nuts were significantly different, and there was no significant correlation between the indexes of morphology and quality characters. The results of principal component analysis showed that the 12 characters were integrated into 3 principal components, and the accumulated contributing raite came up to 83.19%.

  14. Introduction performance of the fine Annong series varieties of Carya illinoensis in Anhui%安农系列薄壳山核桃良种在安徽的引种表现

    Institute of Scientific and Technical Information of China (English)

    何小艳; 殷巧; 马平; 阮学龙; 傅松玲

    2013-01-01

    为掌握安农1号~5号美国山核桃优良品种的特性,并对其规模化栽培提供理论依据,在合肥农业示范园区,对5个美国山核桃优良品种的经济性状进行了调查测定,系统地总结出5个品种的树体特征、生长结实习性、果实性状等特性.观测结果表明,5个优良品种果实大,种仁饱满,种皮及果皮较薄,出仁率均在40%以上,单果质量平均达7.61 g.5个优良品种的种仁经济性状表现优良,种仁油酸含量均超过70%,仁油率均在40%以上.%In order to learn characters of the fine varieties of Annong No.1-No.5 Carya illinoensis,and to provide a theoretical basis for large-scale cultivation,the economic characters of the five superior varieties of C.illinoensis were investigated and determined in agricultural demonstration park of Hefei,and tree characteristics,growth and fruiting habits,nut characters and other characters of the five varieties were systematically summed up.The results of observation and determination show that the fine varieties have big nuts,full kernels,thin seed coats and peels,their kernel percentage are more than 40%,and their average masses of single nuts are up to 7.61 g.The kernel economic characters of the fine varieties are excellent,the contents of oleic acid in kernels are more than 70%,and oil contents in kernels are more than 40%.

  15. 山核桃外蒲壳多酚物质提取及抗氧化研究%Study on the Extraction and Antioxidant Capacity of Phenolic Compounds from Walnuts (Carya Cathayensis) Exoearp

    Institute of Scientific and Technical Information of China (English)

    李兴飞; 陈杭君; 郜海燕; 房祥军; 陶菲

    2013-01-01

    To enhance the extraction efficiency of polyphenols from Carya cathayensis exoearp,two new methods based on the existing organic solvent extraction method,ultrasonic and microwave-assisted extraction methods,were developed.With 60% aqueous ethanol as extraction agent,the yield of the ultrasonic assisted extraction method and the microwave-assisted extraction method were 19.87% and 15.39% respectively.The conditions for ultrasonic-assisted extraction methods were:solid-liquid ratio of 1∶20 (g/mL),40 ℃,200 W,30m in,single extraction.The conditions for the microwave-assisted extraction were:solid-liquid ratio of 1∶20 (g/mL),40 ℃,600 W,4 min.The polyphenols extracted using the ultrasonic method was investigated for its antioxidant activities in vitro.The results showed that the polyphenols extracted exhibited high levels of DPPH and Hydroxyl radical scavenging capacities.%为了优化山核桃外蒲壳多酚的提取工艺,在乙醇提取方法的基础上,探讨超声波及微波辅助处理对多酚提取率的影响.研究结果表明,超声波辅助提取蒲多酚工艺条件是:60%乙醇,料液比1∶20(g/mL),40℃,200 W,30 min,提取1次,在此条件下多酚得率19.87%;微波辅助提取蒲多酚工艺条件是:60%乙醇,料液比1∶20(g/mL),40℃,600W,4 min,提取1次,在此条件下多酚得率为15.39%.将超声提取的多酚进行体外抗氧化分析,结果山核桃蒲多酚对DPPH自由基和超氧阴离子具有较高的清除率.

  16. ESTIMATIVA DA IDADE DE SEGREGAÇÃO DO LENHO JUVENIL E ADULTO DE Carya illinoinensis (Wangenh K. Koch POR MEIO DE PARÂMETROS ANATÔMICOS DA MADEIRA

    Directory of Open Access Journals (Sweden)

    Darci Alberto Gatto

    2010-01-01

    Full Text Available Knowledge of the demarcation of juvenile and mature wood is essential both for wood technology and forest management. Thinning, in most cases, must take into account this parameter, as the juvenile wood has inferior characteristics compared to mature wood, and different proportions of each type of wood will affect the quality and the use of the wood. Thus, this study aimed to determine the age of maturation of the wood using anatomical characteristics of Carya illinoinensis (Wangenh K. Koch wood, through the segregation of juvenile and mature wood. Three adult trees, of good trunk, with diameter greater than 30 cm DBH, were chosen from the region Encosta Superior do Nordeste in the State of the Rio Grande do Sul. From each tree, one disc was removed, with approximately 2 cm in thickness, at 0.10 m in height of the trunk. From each disc was removed a central portion of 2 cm in width, well oriented in the radial direction, including the pith in the center, and this central portion was divided into samples "A" and "B". One of these two samples was selected for separation of the initial wood of each growth ring for maceration (Jeffrey method . First, the length, width and diameter of the lumen of one hundred fibers were measured in the first ring (next to the bark and later, thirty fibers were defined per growth ring as statistically sufficient for the assay. The thickness of the walls of the fiber was taken as the half of the difference of the diameter of the fiber and the lumen. The segregation of the two types of wood was defined by the radial variation (pith-bark of the anatomical characteristics (length, diameter, width of the lumen and thickness of the wall of fibers, through two simple linear regressions. The results indicate that the fiber length is the best characteristic for the definition of the year of segregation. The age of segregation of juvenile-mature wood was defined as 16 years. In their turn, the anatomical parameters, diameter

  17. Radioprotective effects of extract from Carya cathayensis nut exocarp on mice%山核桃外果皮提取液对小鼠的辐射防护作用

    Institute of Scientific and Technical Information of China (English)

    杨琼霞; 殷舒; 申屠垠; 高欣; 孙益; 胡军祥

    2006-01-01

    观察山核桃Carya cathayensis外果皮提取液对小鼠Mus musculus经γ射线辐照所致氧化损伤的防护作用.将小鼠随机分为阴性对照组、单纯辐射组和3种不同剂量提取液给药组.除阴性对照组外其余各组实验动物均用60Coγ射线全身照射,至照射后第5天,处死实验动物,分别测定体质量、血象、丙二醛(MDA)浓度和超氧化物歧化酶(SOD)活性.实验结果表明:单纯辐射组动物外周血白细胞、红细胞、血小板的数量,血红蛋白以及红细胞压积与阴性对照组相比较显著降低(P<0.05),而不同剂量的提取液给药组相应指标均有不同程度的升高.单纯辐射组血清和肝组织MDA浓度较阴性对照组显著升高(P<0.05),各提取液给药组的血清和肝脏的MDA较单纯辐射组均有不同程度的降低,并随着提取液剂量的增加而降低显著(P<0.05).单纯辐射组血清和肝脏SOD活性较阴性对照组显著降低(P<0.05),各提取液给药组血清和肝脏的SOD活性与单纯辐射组比较有不同程度的升高,并且存在着一定的剂量效应关系,提示提取液对于辐射引起的氧化损伤有较好的防护作用.表2参7

  18. A study on pollen germination and viability in different varieties of Carya illinoensis%不同美国山核桃品种花粉萌发与活力研究

    Institute of Scientific and Technical Information of China (English)

    朱雪晨; 王改萍; 彭方仁; 吕昕

    2015-01-01

    In order to analyze effects of different culture conditions on pollen vitality , influences of culture time,culture temperature, pH value of culture medium,sugar,boric acid and PEG-4000 concentration on pollen germination were studied by in vitro culture of four different Carya illinoensis cultivars.The results showed that culture time had extremely significant effect on the pollen germination and the pollen length of C. illinoensis. The suitable culture time was 24 h. The culture temperature,pH value,sugar boric acid and PEG-4000 concentrations in liquid medium had obvious influence on pollen viability of the four varieties.The optimum culture temperature for all varieties was 25-30℃. The weak acidic en⁃vironment was favorable for germination and growth of pollens, and the suitable pH value of liquid medium was 5.6.The pollen germination rate and pollen tube length reached their peaks when the sugar concentration was 20%-25%, the concentration of boric acid was over 0.03%;and the concentration of PEG-4000 was over 15%.%为了分析不同培养条件对美国山核桃花粉生活力的影响,以4个不同品种美国山核桃花粉为试验材料,研究了培养时间、培养温度、培养基pH、蔗糖、硼酸和PEG-4000浓度等对花粉离体萌发的影响。结果表明:不同培养时间对美国山核桃花粉的生活力有显著影响,适宜的培养时间为24 h;适宜的培养温度为25~30℃,温度过高或者过低均会抑制花粉萌发和花粉管生长;适宜的液体培养基pH为5.5,超过此范围均表现为抑制萌发。在一定浓度范围内,蔗糖、硼酸和PEG-4000对美国山核桃4个品种的花粉萌发和花粉管生长起促进作用,而超过阈值后起抑制作用;培养基组分中以含20%~25%的蔗糖、0.03%的硼酸和15%的PEG-4000为宜。

  19. Observation and comparison of flowering phenology of Carya illinoensis in Nanjing%薄壳山核桃在南京的开花物候期观察和比较

    Institute of Scientific and Technical Information of China (English)

    莫正海; 张计育; 翟敏; 宣继萍; 贾晓东; 郭忠仁

    2013-01-01

    对种植于南京的薄壳山核桃[Carya illinoensis (Wangench.)K.Koch] 18个品种(系)的开花物候期(包括雌花和雄花的单花开花过程和花期以及雄花散粉期和雌花可授期)进行了观察和比较.结果表明:供试的18个品种(系)雄花单花的开放过程包括花被裂开、雄花变黄、花药散粉、花药变黑和小花脱落5个时期,其开放过程持续天数为13~22 d;各品种(系)雄花集中在4月下旬进入初花期,5月中下旬进入落花末期,雄花的整个花期持续天数为16~24 d.雌花单花的开放过程包括子房显露、柱头裂开、柱头倒“八”字形、柱头枯萎和子房膨大5个时期,其开放过程持续14 ~ 22 d;雌花集中在4月下旬进入初花期,末花期集中在5月中旬,雌花的整个花期持续天数为12 ~23 d.18个品种(系)的雌花可授期天数为3~10d、雄花散粉期天数为4~9d,多数品种(系)的雄花散粉期与雌花可授期天数为7d.依据雌花和雄花开放的先后顺序可以确定其中的12个品种(系)为雌先型,5个品种为雄先型,仅1个品种为同时型;并根据观察结果确定了22个可行的授粉组合.适宜的品种配置方案为‘马罕’(‘Mahan’)、‘西奥克斯’(‘Sioux’)、‘金华’(‘Jinhua’)、‘卡多’(‘Caddo’)和‘波尼’(‘Pawnee’).

  20. 插穗母树年龄和粗度对薄壳山核桃硬枝扦插的影响%Effects of Parent Tree Age and the Thickness of Cuttings on Rooting Capability of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    李俊南; 李莲芳; 熊新武; 王高升; 刘恒鹏; 习学良

    2013-01-01

    探讨薄壳山核桃不同母树年龄和不同粗度对插穗生根能力的影响,采用1年生硬枝进行扦插试验.母树选择2、5、16年生和25年生,采用IBA-0.2 g· L-1处理插穗.插穗粗度设为≤0.5、0.5~0.8、≥0.8 cm3个径级,插穗用不同浓度的IBA、NAA进行处理.结果表明,2年生母树穗条的愈伤组织产生率和生根率分别为87.7%、14.4%,明显高于其他年龄母树.插穗粗度≥0.8cm穗条的效果最好,其平均愈伤组织产生率和生根率分别达33.1%和9.7%.≥0.8 cm穗条的IBA1.0 g·L-1+NAA0.25 g·L-1混合液处理效果最佳,2个指标分别达43.0%和14.6%.相同母树年龄的插穗其愈伤组织产生率和生根率与粗度成正相关.%Effects of parent tree age and the thickness of cuttings on rooting capability of Carya illinoensis were investigated.One year old cuttings with the thicknesses of 0.5 cm,0.5~0.8 cm,≥ 0.8 cm were collected from parent trees with the ages of 2,5,16,and 25 a.Cuttings were treated with different concentrations or combinations of IBA,and NAA.The results indicated the callus formation rate (CFR) and rooting rate (RR) of the cuttings from 2-year-old parent tree were 87.7% and 14.4%,significantly higher than others.The best results were observed from the cuttings with the thickness of≥0.8 cm,the CFR and RR were 33.1% and 9.7%.The treatment of IBA1.0 g · L-1+NAA0.25 g · L-1 exhibited the best results after treating the cuttings with the thickness of≥0.8 cm,and the CFR and RR were 43.0% and 14.6%.Under the same ages of parent tree,the CFR and RR of the cuttings were positively correlated to thickness.

  1. 控释肥对薄壳山核桃容器苗营养生长的影响%Vegetative growth of containerizedCarya illinoensis seedlings with controlled release fertilizer

    Institute of Scientific and Technical Information of China (English)

    朱海军; 生静雅; 刘广勤; 曹福亮

    2015-01-01

    研究了2种控释肥(APEX 19-6-12和APEX 14-14-14)在低、中、高(2、6、10 g/L)质量浓度下对薄壳山核桃容器苗营养生长的影响。结果表明:控释肥对苗木生长具有促进作用,但因肥料配方和施用质量浓度不同而异;10 g/L APEX 14-14-14和6 g/L APEX 19-6-12的处理下,苗木品质指数最高,分别为0.26和0.30;除10 g/L APEX 19-6-12处理外,所有的控释肥处理均显著促进了苗木生长停滞期的营养生长,茎体积日增量在7月中旬和8月下旬达到两个高峰,分别是32.6 mm3/d(6 g/L APEX 14-14-14)和20.7 mm3/d(6 g/L APEX19-6-12);N、Ca含量均与肥料配方和施肥质量浓度相关,相同质量浓度下APEX19-6-12处理的苗木营养元素含量高于APEX 14-14-14处理;K含量仅受控释肥配方影响,Mg含量则既不受配方影响也不受施用质量浓度的影响;除了K外,其它3种元素在植株各器官中的分配均不受控释肥配方的影响。%The effects of two kinds of controlled release fertilizer(APEX 19-6-12 andAPEX 14-14-14)with low, moderate and high mass concentrations (2, 6 and 10 g/L, respectively) on were evaluated for their effects on the vegetative growth of containerizedCarya illinoensisseedlings were investigated. The results show that the controlled release fertilizer had promoter action on the seedling growth of containerized C. illinoensisseedlings, and promoter actions varied with the changes of prescription and concentration of fertilizer applied; With the treatments of 10 g/L APEX 14-14-14 and 6 g/L APEX 19-6-12, the quality indexes of nursery stock reached the highest, the values were 0.26 and 0.30; The vegetative growth (stem volume current increment) of pecan seedlings during stagnated period were obviously improved, the stem volume daily increment had two high peaks in mid-July and late August, being 32.6 mm3/d (6 g/L APEX 14-14-14) and 20.7 mm3/d (6 g/L APEX19-6-12), respectively; The N and Ca

  2. Creep Properties of Walikukun (Schouthenia ovata Timber Beams

    Directory of Open Access Journals (Sweden)

    Ali Awaludin

    2016-09-01

    Full Text Available This study presents an evaluation of creep constants of Walikukun (Schoutheniaovata timber beams when rheological model of four solid elements, which is obtained byassembling Kelvin and Maxwell bodies in parallel configuration, was adopted. Creep behaviorobtained by this method was further discussed and compared with creep behavior developedusing phenomenological model of the previous study. Creep data of previous study was deformationmeasurement of Walikukun beams having cross-section of 15 mm by 20 mm with a clearspan of 550 mm loaded for three weeks period under two different room conditions: with andwithout Air Conditioner. Creep behavior given by both four solid elements model and phenomenological(in this case are power functions had good agreement during the period of creepmeasurement, but they give different prediction of creep factor beyond this period. The powerfunction of phenomenological model could give a reasonable creep prediction, while for the foursolid elements model a necessary modification is required to adjust its long-term creep behavior.

  3. 山核桃与薄壳山核桃种间杂交F1代果实及苗木性状变异分析%Genetic analysis on fruits and seedlings characters variation of F1 between Carya cathayensis and C. illinoensis

    Institute of Scientific and Technical Information of China (English)

    王年金; 陈军; 姜俊马; 刘荣昌; 姚小华; 王开良; 王国财

    2011-01-01

    The main characters of fruits and seedlings of F1 obtained by hybridization between male parent Corya illinoensis and female parent Carya cathayensis were examined. The results showed that characters of F1 were significantly different from that of control in terms of weight and size of fruit and seed, height and diameter of seedlings growth. The weight, height and diameter of fruits were higher than the control by 29. 1%, 7.2 %, 11.0 %, respectively. And the weight, height and diameter of seed were higher than the control by 30. 9 % ,8. 13 % ,12.4 %, respectively. The average height and diameter of 3 years old seedlings were higher than the control by 18. 1% and 19. 7 %. And it could achieve 29. 2 % and 32. 81% after having planted for2 years. Therefore, It was effective to increase fruit size and improve characters through interspecific hybridization. Seedlings with double embryos in F1 generation accounted for 10 % which was 5 times higher than the control.%以薄壳山核桃为父本,山核桃为母本,进行种间杂交,对F1代果实及苗木主要性状进行测定,结果表明:杂交F1代果实与果核(种子)的大小、质量以及苗木的高、径生长与对照之间都存在显著水平或极显著水平的差异.其中单果质量、果高、果径分别比对照高29.1%、7.2%、11.0%;单核质量、核高、核径分别比对照高30.9%、8.13%、12.4%;3年生苗木平均高和地径比对照分别高18.1%和19.7%;造林2 a后苗木平均高和平均地径比对照分别高29.2%和32.81%.另外,杂交F1代双胚苗所占比率为10%,是对照的5倍.研究表明,种间杂交对增大山核桃果体、改良山核桃性状是有意义的.

  4. Study on Optimization of Microwave-Assisted Extraction of Total Phenol in Exocarp of Carya Cathayensis and its Antioxidant Activities%山核桃外果皮总酚的微波辅助提取工艺优化及其抗氧化研究

    Institute of Scientific and Technical Information of China (English)

    吴峰华; 罗自生; 何志平; 庞林江

    2011-01-01

    Based on the single -factor experiment,the method of response surface analysis with 3 factors including ethanol concentration, solvent - material ratio and microwave power on the yield of total phenol was adopted. The antioxidant of extract was studied in three different systems ( reducing power ,1,1- diphenyl - 2 - picrylhydrazyl (DPPH) free radical scavenging activity and p - Carotene bleaching). The optimal conditions of microwave - assisted extraction were as follows: ethanol concentration 56.0% , solvent - material ratio 1:50, microwave power 502.4 W and time 100 s;the actual value of total phenol was 123. 41 mg/g,in close agreement with the value predicted by the mathematical model. The exocarp of Carya cathayensis extract obtained at the optimal conditions exhibited a strong scavenging DPPH ability comparable to BHT.%在单因素试验的基础上以乙醇浓度、液料比和微波功率为试验因素,以总酚得率为响应值,采用三因素三水平的响应面分析法进行试验.并通过还原力、DPPH清除能力和β胡萝卜素亚油酸三个体系来评价提取物的抗氧化能力.结果表明,山核桃外果皮中总酚提取的最佳工艺条件为:乙醇体积分数56.0%,料液比1:50,微波功率502.4W提取时间100 s;实际测得总酚得率为123.41mg/g,与模型预测值基本相符.山核桃外果皮提取物有很强的抗氧化活性,清除DPPH自由基的能力与BHT相当.

  5. 不同修剪措施对薄壳山核桃枝条生长及枝条和叶片碳氮代谢物积累的影响%Effect of different pruning measures on branch growth and carbon-nitrogen metabolite accumulation in branch and leaf of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    张翔; 翟敏; 徐迎春; 李永荣

    2014-01-01

    Taking 5-year-old grafted seedling of Carya illinoensis ‘ Mahan’ as experimental materials, effects of short-cutting (1 / 4, 1 / 3 and 1 / 2 short-cuttings), girdling and ringing of branch and trunk on branch growth and carbon-nitrogen metabolite accumulation in branch and leaf were researched. The results show that after short-cutting treatment with different degrees, sprouting rate of branch is significantly higher than that of the control (no pruning), number, length and diameter of new branch are higher than those of the control with different degrees, while there is generally no significant difference in specific leaf weight and chlorophyll content between short-cutting treatment and the control. After 1 / 2 and 1 / 3 short-cuttings, proportion of new branch with length of 0 -10 cm and over 30 cm obviously increases, soluble sugar content and C / N ratio in branch and leaf are higher and total N content is lower than those of the control, and starch content in branch is lower and that in leaf is higher than that of the control. After girdling and ringing treatments of branch, sprouting rate of branch and specific leaf weight are higher than those of the control with no significant difference, average length increment of branch and chlorophyll content are significantly lower and average diameter increment of branch is significantly higher than those of the control, soluble sugar and starch contents and C / N ratio in branch and leaf are higher and total N content is lower than those of the control. After girdling and ringing treatments of trunk, sprouting rate and average diameter increment of branch and specific leaf weight are significantly higher while average length increment of branch and chlorophyll content are significantly lower than those of the control, soluble sugar and starch contents and C / N ratio in branch and leaf are higher than those of the control, and total N content in branch is higher while that in leaf is lower than that of the

  6. Expression, purification and crystallization of pecan (Carya illinoinensis) vicilin

    Science.gov (United States)

    Tree nuts are responsible for many cases of severe food allergies. Vicilin, the 7S seed storage protein, has been identified as a food allergen in many typss of tree nuts. The vicilin protein consists of an N-terminal low-complexity region with antimicrobial activities and a C-terminal domain that f...

  7. The pollen of No. 5 , No. 27 and No. 35 of clones of Carya illinoensis was chosen as the experimental material to study the pollen viability and pollen morphology with SEM in different processing modes, plucking time and powder numbers. The results indica%3个薄壳山核桃无性系花粉活力与显微结构比较研究

    Institute of Scientific and Technical Information of China (English)

    李川; 辜夕容; 姚小华; 王开良; 常君; 余裕龙

    2012-01-01

    The pollen of No. 5 , No. 27 and No. 35 of clones of Carya illinoensis was chosen as the experimental material to study the pollen viability and pollen morphology with SEM in different processing modes, plucking time and powder numbers. The results indicated that there are significant differences in the pollen viability in different processing modes, plucking time and powder numbers, also in the Polar axis and equatorial axis of the pollen of these three clones. The form of pollen is ellipsoid and has three apertures which are evenly disposed on the equatorial plane. The equatorial plane of the pollen of these three clones is oval in shape, while the polar planes of clones No. 5 and No. 27 are nearly round and that of No. 35 nearly triangular. There are indifferent granular veins on the surface of the pollen with granular risings equally distributed. This paper provides palynology basis for the origin, evolution and phylogenetic relationship of Carya illinoensis, and foundation of the selection and breeding of new varieties, and cross-hybrid breeding.%以薄壳山核桃无性系5号、27号、35号花粉为试验材料,测定了不同处理方式、不同采摘时期和不同出粉次数下的花粉活力,同时利用扫描电子显微镜对其花粉形态进行了观测.结果表明,不同处理方式、不同采摘时间和不同出粉次数下收集的同一薄壳山核桃无性系花粉,其活力存在显著性差异(P<0.05).3个无性系花粉极轴长(P)和赤道轴长(E)存在显著性差异(P<0.05),花粉粒形状均为扁球形,具有3个萌发孔,均匀分布在赤道面上;3个无性系花粉赤道面观均呈椭圆形,无性系5号和27号极面观呈近圆形,而无性系35号极面观呈近三角形;3个无性系花粉表面呈颗粒状纹饰,均匀分布着颗粒状的突起,表面纹饰差异不明显.通过研究薄壳山核桃花粉的超显微结构,可为薄壳山核桃品种的起源、演化以及种类间亲缘关系等提供孢粉

  8. Oaks were the historical foundation genus of the east-central United States

    Science.gov (United States)

    Hanberry, Brice B.; Nowacki, Gregory J.

    2016-08-01

    Foundation tree species are dominant and define ecosystems. Because of the historical importance of oaks (Quercus) in east-central United States, it was unlikely that oak associates, such as pines (Pinus), hickories (Carya) and chestnut (Castanea), rose to this status. We used 46 historical tree studies or databases (ca. 1620-1900) covering 28 states, 1.7 million trees, and 50% of the area of the eastern United States to examine importance of oaks compared to pines, hickories, and chestnuts. Oak was the most abundant genus, ranging from 40% to 70% of total tree composition at the ecological province scale and generally increasing in dominance from east to west across this area. Pines, hickories, and chestnuts were co-dominant (ratio of oak composition to other genera of <2) in no more than five of 70 ecological subsections and two of 20 ecological sections in east-central United States, and thus by definition, were not foundational. Although other genera may be called foundational because of localized abundance or perceptions resulting from inherited viewpoints, they decline from consideration when compared to overwhelming oak abundance across this spatial extent. The open structure and high-light conditions of oak ecosystems uniquely supported species-rich understories. Loss of oak as a foundation genus has occurred with loss of open forest ecosystems at landscape scales.

  9. Evaporation of a Thickened Agent Simulant from Oak and Hickory Leaves

    Science.gov (United States)

    1990-12-01

    330M0 2.53934 .404272 3.697723 .59573 2.45098 .394869 .3793 1.34055 360.0 2.33976 .376951 3.86T303 . 62305 2.25244 .362883 .4138 1.46242 390.0 2.19000...RSTE 09’ 2 MH OR9PS DEPO-31’W ON LERF SURFACE FOR 3 HR AT 561 .6 F AND 42% RH APPENDIX IK 3S56 K ESTIMATE, OF AVERAC!.,’ El.,’ iECS ANt SUk oJP SQUARES

  10. Selected soil enzyme activities in an oak-hickory forest following long-term prescribed burning

    Science.gov (United States)

    M. R. Bayan; F. Eivazi

    1993-01-01

    The biochemical reactions within the soil are mediated by soil flora and fauna, and are catalyzed by enzymes. Therefore, enzymes play a significant role in nutrient cycling. Enzymes are specific for the type of chemical reactions in which they participate. Arylsulfatase is the enzyme that catalyzes the hydrolysis of an arylsulfate anion by fission of the oxygen-sulfur...

  11. Old Hickory Lake Appendix M To Park Management Shoreline Management Plan

    Science.gov (United States)

    2014-07-01

    17. Vegetation Alteration 18. Private Floating Dock Facilities 19. Shoreline Erosion Control...for moorage of floating docks because of steep bluffs, narrow coves, shallow water, or impacts to navigation. 15. Environmental Restoration and...components of the lake such as fish, wildlife, forests, wetlands , grasslands, soil, air and water with public access and use. These areas are

  12. DOE ZERH Case Study: Glastonbury Housesmith, Hickory Drive, South Glastonbury, CT

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning custom home in the cold climate that got a HERS 29 without PV -23 with PV, with 2x6 24” on center walls with 5.5 blown fiberglass and 2.75” rigid mineral wool; basement with 4” XPS exterior, 4” under slab; sealed attic with 5” ccsf and R-58 blown fiberglass; ground source heat pump COP 4.4.

  13. A new benzofuran in Catalpa ovata%梓实中的新苯并呋喃

    Institute of Scientific and Technical Information of China (English)

    王奇志; 梁敬钰

    2005-01-01

    目的研究梓实的化学成分.方法采用各种色谱技术进行分离纯化,通过理化常数和光谱分析鉴定化合物的结构.结果通过UV、IR、ESI-MS、1H-NMR、13C-NMR、1H-1H COSY、HMQC、HMBC、NOESY和CD等光谱分析鉴定新化合物为2(S)-[3′-羟基-5′-甲氧基]苯基-3(S)-甲酸乙酯基-6-反丙烯酸乙酯基-8-甲氧基苯并呋喃[2(S)-(3'-hydroxy-5'-methoxy)-benz-3(S)-ethoxycarbonyl-6-trans-ethyl acrylate-8-methoxy-benzofuran].结论该化合物为新化合物,命名为梓呋新.

  14. Contact dermatitis following sustained exposure to pecans (Carya illinoensis): a case report.

    Science.gov (United States)

    Joyce, Kathleen M; Boyd, Jason; Viernes, Jay L

    2006-04-01

    Type I hypersensitivity reactions following ingestion of peanuts and tree nuts are well characterized. Cutaneous hypersensitivity reactions are less well characterized, yet they remain the second most common reaction pattern to contact with or ingestion of such nuts. We present a case of a patient who experienced an acute vesicular cutaneous reaction after prolonged contact with pecans. This case illustrates the salient features of contact dermatitis and serves as a reminder that contact with allergenic foods can lead to hypersensitivity reactions.

  15. [Bromatological characteristics of pecan nuts (Carya illinoensis Koch) cultivated in Brazil].

    Science.gov (United States)

    de Carvalho, V D

    1975-01-01

    The A. studied pecan nuts cultivated in Brazil: two samples represented North American varieties and three others Brazilian hybrids. The comparison between physical classification and chemical composition, specially amino acid contents pointed to non significant differences, all beeing useful for commercial purposes. The A. stresses the importance of the culture of pecan nuts in Brazil.

  16. Antioxidant Properties of Pecan Nut [Carya illinoinensis (Wangenh.) C. Koch] Shell Infusion

    Energy Technology Data Exchange (ETDEWEB)

    Pinheiro do Prado, A. C.; Monalise Aragao, A.; Fett, R.; Block, J. M.

    2009-07-01

    The nutritional composition of Pecan nut [Ca rya illinoinensis (Wangenh.) C. Koch] shells and the total phenolic and condensed tannin contents of Pecan nut shell infusion were determined and the antioxidant activity of the infusion was evaluated through ABTS, DPPH and {beta}-carotene/linoleic acid systems. The shell presented high fiber content (48% {+-} 0.06), the total phenolic content ranged from 116 to 167 mg GAE/g and the condensed tannin content was between 35 and 48 mg CE/g. The antioxidant activity varied from 1112 and 1763 {mu}mol TEAC/g in the ABTS system. In the DPPH method, the antioxidant activity was from 305 to 488 mg TEAC/g (30 minutes reaction) and from 482 to 683 mg TEAC/g (24 h reaction). The oxidation inhibition percentage obtained in the {beta}-carotene/linoleic acid system varied from 70 to 96%. The results indicated the high phenolic content and antioxidant activity of Pecan nut shell infusion. (Author) 28 refs.

  17. Lippia graveolens and Carya illinoensis Organic Extracts and there in vitro Effect Against Rhizoctonia Solani Kuhn

    Directory of Open Access Journals (Sweden)

    Francisco D. Hernandez-Castillo

    2010-01-01

    Full Text Available Problem statement: Plant extracts with polyphenolic compounds obtained with different solvents have been evaluated against plant pathogens. However, most of these extract have been obtained using solvents no allowed under an organic production context. Approach: In the present research was to evaluate the inhibitory effect of polyphenolic extracts from L. graveolens and C. illinoensis, obtained with alternative organic solvents (lanolin and cocoa butter, water and ethanol against R. solani in order to determine the Inhibitory Concentration (IC50 of each extract. Results: The results showed that extracts of both L. graveolens and C. illinoensis obtained with lanolin and ethanol (200 and 3000 ppm of total tannins, respectively inhibited at 100% growth of R. solani. The IC50 for each extract was highly variable, low IC50 values were obtained with L. graveolens (4.50×101 and C. illinoensis (4.33×102 extract using lanolin and ethanol respectively. Tannins extraction was strongly dependent on plant species and in the solvent used. Conclusion: The alternative organic solvents lanolin and cocoa butter allowed the recovery of polyphenols compounds with antifungal activity against R. solani.

  18. Identification and Characterization of a New Pecan [Carya illinoinensis (Wangenh.) K. Koch] Allergen, Car i 2.

    Science.gov (United States)

    Zhang, Yuzhu; Lee, BoRam; Du, Wen-Xian; Lyu, Shu-Chen; Nadeau, Kari C; Grauke, Larry J; Zhang, Yan; Wang, Shuo; Fan, Yuting; Yi, Jiang; McHugh, Tara H

    2016-05-25

    The 7S vicilin and 11S legumin seed storage globulins belong to the cupin protein superfamily and are major food allergens in many foods from the "big eight" food allergen groups. Here, for the first time, pecan vicilin was found to be a food allergen. Western blot experiments revealed that 30% of 27 sera used in this study and 24% of the sera from 25 patients with double-blind, placebo controlled clinical pecan allergy contained IgE antibodies specific to pecan vicilin. This allergen consists of a low-complexity region at its N-terminal and a structured domain at the C-terminal that contains two cupin motifs and forms homotrimers. The crystal structure of recombinant pecan vicilin was determined. The refined structure gave R/Rfree values of 0.218/0.262 for all data to 2.65 Å. There were two trimeric biological units in the crystallographic asymmetric unit. Pecan vicilin is also a copper protein. These data may facilitate the understanding of the nutritional value and the allergenicity relevance of the copper binding property of seed storage proteins in tree nuts.

  19. Biochemical composition and immunological comparison of select pecan [Carya illinoinensis (Wangenh.) K. Koch] cultivars.

    Science.gov (United States)

    Venkatachalam, Mahesh; Kshirsagar, Harshal H; Seeram, Navindra P; Heber, David; Thompson, Tommy E; Roux, Kenneth H; Sathe, Shridhar K

    2007-11-28

    On an edible portion basis, pecan moisture, protein, lipid, total soluble sugars, and ash contents ranged from 2.1% to 6.4%, 6.0% to 11.3%, 65.9% to 78.0%, 3.3% to 5.3%, and 1.2% to 1.8%, respectively. With the exception of a high tannin (2.7%) Texas seedling, pecan tannin content was in a narrow range (0.6-1.85%). Unsaturated fatty acids (>90%) dominated pecan lipid composition with oleic (52.52-74.09%) and linoleic (17.69-37.52%) acids as the predominant unsaturated fatty acids. Location significantly influenced pecan biochemical composition. Pecan lipid content was negatively correlated with protein (r = -0.663) and total sugar (r = -0.625). Among the samples tested using SDS-PAGE a common pattern, with minor differences, in subunit polypeptide profiles was revealed. Rabbit polyclonal antibody-based immunoblotting experiments (Western blot) also illustrated the similarity in polypeptide profiles with respect to immunoreactivity. All tested cultivars registered similar immunoreactivity when their protein extracts (each at 1 mg/mL) were assessed using inhibition ELISAs (mean +/- standard deviation = 0.89 +/- 0.20; n = 27) with the USDA "Desirable" cultivar as the reference standard (immunoreactivity designated as 1.0).

  20. Biochemical characterization of soluble proteins in pecan [Carya illinoinensis (Wangenh.) K. Koch].

    Science.gov (United States)

    Venkatachalam, Mahesh; Roux, Kenneth H; Sathe, Shridhar K

    2008-09-10

    Pecans (cv. Desirable) contained approximately 10% protein on a dry weight basis. The minimum nitrogen solubility (5.9-7.5%) at 0.25-0.75 M trichloroacetic acid represented the nonprotein nitrogen. Among the solvents assessed for protein solubilization, 0.1 M NaOH was the most effective, while borate saline buffer (pH 8.45) was judged to be optimal for protein solubilization. The protein solubility was minimal in the pH range of 3-7 and significantly increased on either side of this pH range. Increasing the NaCl concentration from 0 to 4 M significantly improved ( approximately 8-fold increase) protein solubilization. Following Osborne protein fractionation, the alkali-soluble glutelin fraction (60.1%) accounted for a major portion of pecan proteins followed by globulin (31.5%), prolamin (3.4%), and albumin (1.5%), respectively. The majority of pecan polypeptides were in the molecular mass range of 12-66 kDa and in the pI range of 4.0-8.3. The pecan globulin fraction was characterized by the presence of several glycoprotein polypeptides. Lysine was the first limiting essential amino acid in the defatted flour, globulin, prolamin, and alkaline glutelin fractions. Leucine and tryptophan were the first limiting essential amino acids in albumin and acid glutelin fractions, respectively. Rabbit polyclonal antibodies detected a range of pecan polypeptides in the 12-60 kDa range, of which the globulin fraction contained the most reactive polypeptides.

  1. Detection of Drought-Induced Hickory Disturbances in Western Lin An County, China, Using Multitemporal Landsat Imagery

    National Research Council Canada - National Science Library

    Xi, Zhenyuan; Lu, Dengsheng; Liu, Lijuan; Ge, Hongli

    2016-01-01

    .... Ratios of green vegetation to soil fractions were calculated, in which the green vegetation and soil fractions were extracted from Landsat multispectral imagery using the linear spectral mixture analysis approach...

  2. 2006 United States Army Corps of Engineers (USACE) Post Hurricane Wilma Lidar: Hurricane Pass to Big Hickory Pass, FL

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The data contained in these files contain hydrographic and topographic data collected by the CHARTS system along the west coast of Florida from Hurricane Pass to Big...

  3. Archeological Survey and Testing at Pomme de Terre and Stockton Lakes, Cedar, Dade, Hickory, and Polk Counties, Missouri

    Science.gov (United States)

    1992-01-01

    were rare in prior to Anglo-American settlement because red cedar (Juniperus virginiana) is extremely susceptible to fire dam- age . Other frequently...common fish remains from Rodgers Shelter are catfish (Ictaluridae) and suckers ( Catostomidae ) (Parmalee et al. 1976:157). Gravels of the stream bottoms and...terrace, but this occupation was not investigated ade- quately for interpretation (Kay 1982c:736). Radiocarbon ages pertaining to this period are 3530 1

  4. 75 FR 24943 - Millennium Pipeline Company, LLC; Notice of Request Under Blanket Authorization

    Science.gov (United States)

    2010-05-06

    ... York to an interconnection with the facilities of Southern Tier Transmission Company (STT) near Hickory... with STT at Hickory Grove in Horseheads, New York. The Hickory Grove Lateral was constructed in 1993 by...

  5. Development of a stable low-fat yogurt gel using functionality of psyllium (Plantago ovata Forsk) husk gum.

    Science.gov (United States)

    Ladjevardi, Zhaleh Sadat; Gharibzahedi, Seyed Mohammad Taghi; Mousavi, Mohammad

    2015-07-10

    Psyllium husk gum (PHG) as an ideal fat replacer was utilized to improve the production of an industrial low-fat yogurt gel. The combined effects of critical structural components (PHG concentration (0.072-0.128%) and fat content (0.29-1.71%)) on the textural (firmness and syneresis), rheological (viscosity), and chemical (pH and total titratable acidity (TTA)) attributes of developed set-yogurts were investigated using response surface methodology (RSM). The second-order polynomial equations with high R(2) demonstrated a good agreement between experimental and predicted data. The optimal formulation for achieving optimal pH (4.39) and TTA (81% lactic acid), maximizing firmness (0.172 N) and viscosity (6.40 Pa s) and minimizing whey separation (36.21 mL/100g) was 0.12% PHG and 0.63% fat. Sensory characterization also revealed that the yogurts manufactured at optimal point had more aroma, texture and overall acceptability than the control yogurts.

  6. 泡核桃抗旱造林技术%Drought Resistant Afforestation Techniques of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    姜贵勇

    2010-01-01

    分析影响泡核桃造林成活的因素主要有立地条件,苗木质量,造林技术,温度、水分条件以及管护等方面.阐述了按适地适树原则进行造林地块的选择,做好造林整地,合理确定造林密度,起苗、截干、包装运输等种苗处理技术措施,定植时间、方法、覆膜、遮阳等定植技术以及补水和管护等技术措施和方法.在景东县6个地点进行试验,结果表明,可提高13.6%的造林成活率.

  7. 薄壳山核桃研究概况%The Survey Research and Development Trends of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    王曼; 宁德鲁; 李贤忠; 张雨; 李勇杰

    2010-01-01

    通过对薄壳山核桃的经济性状、原产地及其分布、引种栽培、生物学特性、生态要求、品种类型、繁育研究等研究现状进行剖析,提出薄壳山核桃的发展趋势,以期能为我国林农在选择发展薄壳山核桃时提供一些参考.

  8. Antigenic stability of pecan [Carya illinoinensis (Wangenh.) K. Koch] proteins: effects of thermal treatments and in vitro digestion.

    Science.gov (United States)

    Venkatachalam, Mahesh; Teuber, Suzanne S; Peterson, W Rich; Roux, Kenneth H; Sathe, Shridhar K

    2006-02-22

    Rabbit polyclonal antibody-based inhibition ELISA as well as immunoblotting analyses of proteins extracted from variously processed pecans (cv. Desirable) indicate that pecan proteins are antigenically stable. Pecan antigens were more sensitive to moist heat than dry heat processing treatments. SDS-PAGE and immunoblotting analysis of the native and heat-denatured proteins that were previously subjected to in vitro simulated gastric fluid digestions indicate that stable antigenic peptides were produced. Both enzyme-to-substrate ratio and digestion time were influential in determining the stability of pecan polypeptides. The stable antigenic polypeptides may serve as useful markers in developing assays suitable for the detection of trace amounts of pecans in foods.

  9. Phenolic compounds and antioxidant activity of Pecan [Carya illinoinensis (Wangenh. C. Koch] kernel cake extracts obtained by sequential extraction

    Directory of Open Access Journals (Sweden)

    Block, Jane Mara

    2009-12-01

    Full Text Available The total phenolic and condensed tannin contents of different Pecan kernel cake extracts (ether, acetone, alcohol and distilled water were estimated and their antioxidant activities were evaluated through ABTS, DPPH and ß-carotene/linoleic acid systems. Color variations of the Pecan kernel cake were determined through an instrumental analysis using the CIE Lab system. Significantly higher levels (p El contenido de taninos condensado y fenoles totales de diferentes extractos de tortas de almendra de pecana (éter, acetona, alcohol y agua destilada fueron estimados y sus actividades antioxidantes fueron evaluadas mediantes los métodos con ABTS, DPPH y el sistema ß-caroteno/ácido linoleico. Las variaciones de color de la torta de almendra de pecana fueron determinadas mediante análisis instrumental usando el sistema CIE Lab. Los contenidos de fenoles totales, taninos condensados y actividad antioxidante, medida mediante los métodos con ABTS Y DPPH (30 min y 24 h, fueron significativamente más altos (p < 0.05 con el extracto de acetona (16.4 mg GAE/g; 31.2 mg CE/g; 235.3 μmol TEAC/g and 68.6 and 100.3 mg TEAC/g, respectivamente. El porcentaje de inhibición de la oxidación en el sistema ß-caroteno/ ácido linoleico vario desde 37.9 a 93.1% con el extracto de acetona a 300 ppm, mostrando resultados significativamente superiores. Las muestras con una mayor tendencia a tonos rojos presento los niveles más altos de taninos condensados.

  10. Analysis of pecan nut (Carya illinoinensis) unsaponifiable fraction. Effect of ripening stage on phytosterols and phytostanols composition.

    Science.gov (United States)

    Bouali, Intidhar; Trabelsi, Hajer; Herchi, Wahid; Martine, Lucy; Albouchi, Ali; Bouzaien, Ghaith; Sifi, Samira; Boukhchina, Sadok; Berdeaux, Olivier

    2014-12-01

    Changes in 4-desmethylsterol, 4-monomethylsterol, 4,4-dimethylsterol and phytostanol composition were quantitatively and qualitatively investigated during the ripening of three varieties of Tunisian-grown pecan nuts (Mahan, Moore and Burkett). These components have many health benefits, especially in lowering LDL-cholesterol and preventing heart disease. The phytosterol composition of whole pecan kernel was quantified by Gas Chromatography-Flame Ionisation Detection (GC-FID) and identified by Gas Chromatography-Mass Spectrometry (GC-MS). Fifteen phytosterols and one phytostanol were quantified. The greatest amount of phytosterols (2852.5mg/100g of oil) was detected in Mahan variety at 20 weeks after the flowering date (WAFD). Moore had the highest level of phytostanols (7.3mg/100g of oil) at 20 WAFD. Phytosterol and phytostanol contents showed a steep decrease during pecan nut development. Results from the quantitative characterisation of pecan nut oils revealed that β-sitosterol, Δ5-avenasterol, and campesterol were the most abundant phytosterol compounds at all ripening stages.

  11. A statistical design for testing apomictic diversification through linkage analysis.

    Science.gov (United States)

    Zeng, Yanru; Hou, Wei; Song, Shuang; Feng, Sisi; Shen, Lin; Xia, Guohua; Wu, Rongling

    2014-03-01

    The capacity of apomixis to generate maternal clones through seed reproduction has made it a useful characteristic for the fixation of heterosis in plant breeding. It has been observed that apomixis displays pronounced intra- and interspecific diversification, but the genetic mechanisms underlying this diversification remains elusive, obstructing the exploitation of this phenomenon in practical breeding programs. By capitalizing on molecular information in mapping populations, we describe and assess a statistical design that deploys linkage analysis to estimate and test the pattern and extent of apomictic differences at various levels from genotypes to species. The design is based on two reciprocal crosses between two individuals each chosen from a hermaphrodite or monoecious species. A multinomial distribution likelihood is constructed by combining marker information from two crosses. The EM algorithm is implemented to estimate the rate of apomixis and test its difference between two plant populations or species as the parents. The design is validated by computer simulation. A real data analysis of two reciprocal crosses between hickory (Carya cathayensis) and pecan (C. illinoensis) demonstrates the utilization and usefulness of the design in practice. The design provides a tool to address fundamental and applied questions related to the evolution and breeding of apomixis.

  12. Lower Mississippi River Environmental Program. Report 10. Evaluation of Bird and Mammal Utilization of Dike Systems Along the Lower Mississippi River.

    Science.gov (United States)

    1987-11-01

    Boehmeria cylindrica - + + + + + - - - - Brunnchia cirrhosa - + + + - + + + + + Campsisradicans - - + + - + + + + - Carya illinoensis ...erythrorhizos - - - + + + + + + - Desmanthus illinoensis + + + - - - - Digitaria ischaemum - - - - + - + + + + Digitaria sanguinalis

  13. A Survey of Attitudes, Values, Impressions and Feelings towards Extension Specialization and Programs in the Kaysinger Program Area (Bates, Benton, Cedar, Hickory, St. Clair and Vernon Counties.)

    Science.gov (United States)

    Thacker, R. D.

    To provide a bench mark or base-line study from which future measurements of the effectiveness of area programming and area staff specialization in Extension programs of the University of Missouri, a questionnaire was mailed to 913 people in six counties. The number of usable questionnaires returned was 516. The data from the questionnaire are…

  14. 美国山核桃主要栽培品种的RAPD鉴定%Identification of Main Varieties of American Hickory by RAPD

    Institute of Scientific and Technical Information of China (English)

    张日清; 吕芳德; 谭晓风; 何方; 谢碧霞

    2004-01-01

    以叶片为材料,采用改良CTAB法和16种Operon引物对从原产地美国引进的30个美国山核桃主要栽培品种进行RAPD分子分析.结果表明:参试品种间存在明显的基因带型差异,多态型比率高达78.1%;根据RAPD特异分离谱带确定了各品种的标记基因型,以此可实现对美国山核桃无性系品种DNA水平上的鉴别;以标记基因型对30个美国山核桃品种进行系统聚类,结果与传统形态学及Marquard等人的同工酶分类基本吻合.

  15. Estudio sobre utilización y reacciones adversas de preparaciones de Plántago Ovata en oficinas de farmacia

    OpenAIRE

    Gómez Arqueros, Carlos

    2014-01-01

    Aunque no existe una definición única y consensuada, el estreñimiento consiste en la emisión difícil de heces en un número inferior a 3 veces por semana o con un intervalo superior a 48 horas entre ellas. Para poder considerar la existencia de estreñimiento, es importante tener en cuenta también que se haya producido una disminución del ritmo intestinal habitual; de hecho, en ocasiones puede ser el único indicio real del estreñimiento. La forma más común de manifestarse es un estreñimiento co...

  16. Different phycobilin antenna organisations affect the balance between light use and growth rate in the cyanobacterium Microcystis aeruginosa and in the cryptophyte Cryptomonas ovata.

    Science.gov (United States)

    Kunath, Christfried; Jakob, Torsten; Wilhelm, Christian

    2012-03-01

    During the recent years, wide varieties of methodologies have been developed up to the level of commercial use to measure photosynthetic electron transport by modulated chlorophyll a-in vivo fluorescence. It is now widely accepted that the ratio between electron transport rates and new biomass (P (Fl)/B (C)) is not fixed and depends on many factors that are also taxonomically variable. In this study, the balance between photon absorption and biomass production has been measured in two phycobilin-containing phototrophs, namely, a cyanobacterium and a cryptophyte, which differ in their antenna organization. It is demonstrated that the different antenna organization exerts influence on the regulation of the primary photosynthetic reaction and the dissipation of excessively absorbed radiation. Although, growth rates and the quantum efficiency of biomass production of both phototrophs were comparable, the ratio P (Fl)/B (C) was twice as high in the cryptophyte in comparison to the cyanobacterium. It is assumed that this discrepancy is because of differences in the metabolic regulation of cell growth. In the cryptophyte, absorbed photosynthetic energy is used to convert assimilated carbon directly into proteins and lipids, whereas in the cyanobacterium, the photosynthetic energy is preferentially stored as carbohydrates.

  17. Survival and development of Lymantria monacha (Lepidoptera: Lymantriidae) on North American and introduced Eurasian tree species.

    Science.gov (United States)

    Keena, M A

    2003-02-01

    Lymantria monacha (L.) (Lepidoptera: Lymantriidae), the nun moth, is a Eurasian pest of conifers that has potential for accidental introduction into North America. To project the potential host range of this insect if introduced into North America, survival and development of L. monacha on 26 North American and eight introduced Eurasian tree species were examined. Seven conifer species (Abies concolor, Picea abies, P. glauca, P. pungens, Pinus sylvestris with male cones, P. menziesii variety glance, and Tsuga canadensis) and six broadleaf species (Betula populifolia, Malus x domestica, Prunus serotiaa, Quercus lobata, Q. rubra, and Q. velutina) were suitable for L. monacha survival and development. Eleven of the host species tested were rated as intermediate in suitability, four conifer species (Larix occidentalis, P. nigra, P. ponderosa, P. strobus, and Pseudotsuga menziesii variety menziesii) and six broadleaf species (Carpinus caroliniana, Carya ovata, Fagus grandifolia, Populus grandidentata, Q. alba, and Tilia cordata) and the remaining 10 species tested were rated as poor (Acer rubrum, A. platanoidies, A. saccharum, F. americana, Juniperus virginiana, Larix kaempferi, Liriodendron tulipfera, Morus alba, P. taeda, and P. deltoides). The phenological state of the trees had a major impact on establishment, survival, and development of L. monacha on many of the tree species tested. Several of the deciduous tree species that are suitable for L. monacha also are suitable for L. dispar (L.) and L. mathura Moore. Establishment of L. monacha in North America would be catastrophic because of the large number of economically important tree species on which it can survive and develop, and the ability of mated females to fly and colonize new areas.

  18. 美国山核桃组培中材料灭菌的研究%Sterilization of Carya illinoensis Explants in Tissue Culture

    Institute of Scientific and Technical Information of China (English)

    傅玉兰; 谷凤; 吴炜

    2004-01-01

    采用不同的灭菌措施,包括不同的灭菌剂、浓度和处理顺序,对美国山核桃带芽茎段进行灭菌处理,研究其污染率和污染速率的变化,寻找建立无菌培养系最适宜的方法.结果表明,外植体材料最适宜的灭菌处理方法为:先将外植体在70%酒精中浸30 s,再将其用0.2%升汞液(加数滴吐温80)浸15 min,无菌水冲洗10次,最后接种.培养基中添加适量活性炭,且前期暗培养是提高材料无菌率的有利保障.另外,培养基中加入青霉素、链霉素各100mg·L-1可明显提高材料的无菌率.

  19. Overview of Cultivation and Management Techniques of Carya Illinoensis%薄壳山核桃栽培管理技术

    Institute of Scientific and Technical Information of China (English)

    廖建江; 张建平

    2010-01-01

    薄壳山核桃具有高度的营养价值、经济价值、生态价值,从19世纪引入中国以来,受到高度重视,各地都积极引进推广.从林地的选择、林地整地、苗木栽植、树园管理、果实采摘贮藏对核桃的栽培管理技术做了简要的介绍,并对薄壳山核桃的发展前景做出评估.

  20. Suitability and Development Perspectives of Carya illinoensis in Sichuan%美国山核桃在四川的适应性及其开发前景

    Institute of Scientific and Technical Information of China (English)

    殷国兰; 杨金亮; 辜云杰; 陈宇; 杜林

    2016-01-01

    将四川地区主要气候因子与美国山核桃现实生态位宽进行了比较,表明美国山核桃在四川的适生区域较广,前景广阔.建议四川省引种美国山核桃首先考虑四川的东部及南部地区.

  1. Cultivation of Carya illinoensis(Wangenn.)K.Koch as an exotic species%薄壳山核桃的引种栽培

    Institute of Scientific and Technical Information of China (English)

    吴文龙; 闾连飞

    2003-01-01

    薄壳山核桃果实营养丰富,是世界著名的干果之一.其木质质地坚固强韧,是优良的用材树种;由于其树姿优美,还可作为绿化树种.该树种于20世纪初引入我国,在本地生长、结果良好,表现出了较强的适应性,值得大面积推广栽培.

  2. The Research Summary and Developmental Trend of Carya illinoensis%薄壳山核桃研究概况及发展趋势

    Institute of Scientific and Technical Information of China (English)

    王曼; 李贤忠; 宁德鲁; 张雨; 李勇杰

    2009-01-01

    介绍薄壳山核桃优良的经济性状、在原产地美国的栽培情况以及在我国的引种栽培等情况,阐述其生物学特性、生态要求、品种类型及有性繁殖、无性繁殖、杂交育种等方面研究概况,指出薄壳山核桃的栽培与种植发展趋势.

  3. The survey research of Carya illinoensis in China%我国薄壳山核桃研究概况

    Institute of Scientific and Technical Information of China (English)

    侯冬培; 习学良; 石卓功

    2007-01-01

    中国自19世纪末引种薄壳山核桃以来,通过对其原产地及其分布、生态要求、生物学特性、品种类型、繁殖培育、病虫害防治、栽培技术的研究分析,展现这些技术研究的成果,表明薄壳山核桃在我国的发展潜力和趋势,为我国的林农经济结构调整和农民致富做出贡献.

  4. 美国山核桃的研究栽培与利用%Research Culture and Development of Carya illinoensis

    Institute of Scientific and Technical Information of China (English)

    秦倩

    2010-01-01

    介绍了美国山核桃的分布发展状况,阐述了它的形态和生物学特性及适宜的环境生长条件,同时提出了较为合理的栽培技术措施,以期为今后发展我国干果生产,促进其优质、稳产、丰产提供依据.

  5. DISPONIBILIDAD DE LUZ Y PRODUCCIÓN DE NUEZ DESPUÉS DEL ACLAREO DE ÁRBOLES DE NOGAL PECANERO (Carya illinoensis

    Directory of Open Access Journals (Sweden)

    J. G. Arreola Ávila

    2010-01-01

    Full Text Available El volumen de la copa bien iluminada es uno de los factores clave en la productividad de árboles de nogal pecanero. Cuando las huertas de nogal pecanero con densidades de plantación al menos de 100 árboles por hectárea presentan problemas de sombreo, la penetración de luz dentro de la copa del árbol y entre árboles, el crecimiento y la producción son negativamente afectadas. La investigación realizada para estudiar el efecto del aclareo de árboles de nogal pecanero sobre la disponibilidad de la luz y productividad de la huerta es limitada. El objetivo del presente estudio fue determinar el efecto del aclareo de árboles sobre la disponibilidad de radiación fotosintéticamente activa (RFA dentro de árboles permanentes, crecimiento del brote, producción y calidad de la nuez. Este estudio se llevó a cabo en una huerta madura de nogal pecanero con aclareo de árboles de 25 a 50 % durante el periodo 2004-2008. La disponibilidad de RFA dentro de árboles, longitud de brotes y la producción de nuez fueron afectadas por los tratamientos de aclareo; sin embargo, la calidad (porcentaje de almendra por árbol durante el periodo de tres años de estudio no fue significativamente afectada. Los resultados de este estudio indican que un gradual aclareo en huertas con problemas de sombreo debe realizarse para recuperar el crecimiento y componentes de producción.

  6. Evaluación de la calidad durante el almacenamiento de nueces Pecán [Carya illinoinensis (Wangenh. C. Koch] acondicionadas en diferentes envases

    Directory of Open Access Journals (Sweden)

    Block, Jana Mara

    2008-06-01

    Full Text Available In the present work, the quality changes of pecan nuts stored in nylon-polyethylene plastic film under vacuum and in polypropylene plastic recipients at ambient temperature for 150 days were evaluated. The nutritional composition, fatty acid composition and tocopherol content of the pecan nuts reveal interesting nutritional characteristics and an oil with high contents of mono-unsaturated fatty acids and γ-tocopherol. During storage, moisture content did not suffer significant changes, but a gradual and significant darkening of the surface of the nuts occurred. The changes in acid value, peroxide value and specific extinction of the extracted oil were significant. The microbiological quality was excellent and the presence of Salmonella sp. was not detected. Through sensory analysis, the shelf-life of the product was determined as 120 days, without significant differences between the two types of packaging used.En el presente trabajo, fueron evaluadas las alteraciones en la calidad de nueces Pecán almacenadas en película plástica de nilón-polietileno al vacío y en recipientes plásticos de polipropileno, en temperatura ambiente, durante 150 días. La composición nutricional, en ácidos grasos (62,5 % de ácido oleico y el contenido de tocoferoles (30 mg/kg de γ-tocoferol de las nueces Pecán, indican características nutricionales interesantes. Durante el almacenamiento de las nueces, el contenido de humedad no sufrió cambios significativos, mas ocurrió un oscurecimiento gradual y significativo de la superficie de las nueces. Las alteraciones en los índices de acidez (0,17 - 0,37 y 0,19 - 0,57 inicial y final para los envases de película plástica y polipropileno, respectivamente, peróxido (1,0 - 2,7 y 1,1 - 4,7 y extinción específica a 232 nm (0,98 - 1,99 y 0,96 - 2,16 y 270 nm (0,11 - 0,33 y 0,04 - 0,15 en el aceite extraído fueron significativas. La calidad microbiológica fue excelente y no fue detectada la presencia de Salmonella sp. A través del análisis sensorial se determinó la vida de anaquel del producto como 120 días, sin diferencias significativas entre los dos tipos de envases utilizados.

  7. Evaluation of acute and subacute toxicity and mutagenic activity of the aqueous extract of pecan shells [Carya illinoinensis (Wangenh.) K. Koch].

    Science.gov (United States)

    Porto, Luiz Carlos Santos; da Silva, Juliana; Ferraz, Alexandre de Barros Falcão; Corrêa, Dione Silva; dos Santos, Marcela Silva; Porto, Caroline Dalla Lana; Picada, Jaqueline Nascimento

    2013-09-01

    The infusion of pecan shells has been used to prevent and control hypercholesterolemia, diabetes and toxicological diseases. The aim of the present study was to evaluate toxicity and mutagenic effects of pecan shells aqueous extract (PSAE). Wistar rats were treated with a single dose of 300 or 2000 mg/kg of PSAE in the acute toxicity test. For the subacute test, the animals received 10 or 100 mg/kg of PSAE for 28 days. The mutagenicity was evaluated using Salmonella/microsome assay in TA1535, TA1537, TA98, TA100 and TA102 S. typhimurium strains in the presence and absence of metabolic activation (S9 mix) and micronucleus test in bone marrow. HPLC analyses indicated the presence of tannins, flavonoids, gallic and ellagic acids. Except for triglycerides, all treated groups presented normal hematological and biochemical parameters. Lower levels of triglycerides and weight loss were observed in the 100 mg/kg group. Mutagenic activities were not detected in S. typhimurium strains and by the micronucleus test. Based on these results, PSAE was not able to induce chromosomal or point mutations, under the conditions tested. The 100mg/kg dose showed significant antihyperlipidemic action, with no severe toxic effects. Copyright © 2013 Elsevier Ltd. All rights reserved.

  8. Evaluation of the antimicrobial activity of pecan nut [Carya illinoinensis (Wangenh C. Koch] shell aqueous extract on minimally processed lettuce leaves

    Directory of Open Access Journals (Sweden)

    Sabrina CAXAMBÚ

    2016-01-01

    Full Text Available Abstract Pecan nutshell is a residue from food industry that has potential to be used as biopreservative in foods. The objective of this study was to evaluate the antimicrobial activity of pecan nutshell aqueous extract in vitro and its effectiveness to inhibit spoilage microorganisms on lettuce leaves. The results indicate that the aqueous extract presents inhibitory activity against important foodborne pathogenic bacteria such as Listeria monocytogenes, Salmonella Enteritidis, Staphylococcus aureus, Bacillus cereus, Aeromonas hydrophila and Pseudomonas aeruginosa. Antimicrobial activity was not observed against Corynebacterium fimi, Clostridium perfringens, Escherichia coli, and the phytopathogenic fungi tested. When applied onto lettuce leaves, pecan nutshell extract reduced the counts of mesophilic and psychrotrophic bacteria in 2 and 4 log CFU/g, respectively, during storage of leafy for 5 days at refrigeration temperature (5 °C. The extract was not effective to inhibit yeast on lettuce leaves. Thus, the aqueous extract of pecan shell showed great potential to be used as a natural preservative in foods, acting mainly in the inhibition of spoilage and pathogenic bacteria.

  9. Electron-beam irradiation effects on phytochemical constituents and antioxidant capacity of pecan kernels [ Carya illinoinensis (Wangenh.) K. Koch] during storage.

    Science.gov (United States)

    Villarreal-Lozoya, Jose E; Lombardini, Leonardo; Cisneros-Zevallos, Luis

    2009-11-25

    Pecans kernels (Kanza and Desirable cultivars) were irradiated with 0, 1.5, and 3.0 kGy using electron-beam (E-beam) irradiation and stored under accelerated conditions [40 degrees C and 55-60% relative humidity (RH)] for 134 days. Antioxidant capacity (AC) using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and oxygen radical absorbance capacity (ORAC) assays, phenolic (TP) and condensed tannin (CT) content, high-performance liquid chromatography (HPLC) phenolic profile, tocopherol content, peroxide value (PV), and fatty acid profiles were determined during storage. Irradiation decreased TP and CT with no major detrimental effects in AC. Phenolic profiles after hydrolysis were similar among treatments (e.g., gallic and ellagic acid, catechin, and epicatechin). Tocopherol content decreased with irradiation (>21 days), and PV increased at later stages (>55 days), with no change in fatty acid composition among treatments. Color lightness decreased, and a reddish brown hue developed during storage. A proposed mechanism of kernel oxidation is presented, describing the events taking place. In general, E-beam irradiation had slight effects on phytochemical constituents and could be considered a potential tool for pecan kernel decontamination.

  10. MÉTODOS DE SUPERAÇÃO DE DORMÊNCIA DA SEMENTE DE NOGUEIRA-PECÃ Carya illinoinensis (Wangenh. K. Koch1

    Directory of Open Access Journals (Sweden)

    Tales Poletto

    2015-12-01

    Full Text Available A cultura da nogueira-pecã tem grande importância para a economia de vários municípios do Sul do Brasil. Entretanto, problemas como baixa porcentagem de germinação das sementes e irregularidade na emergência das plântulas trazem dificuldades no processo de propagação, decorrentes da influência do fenômeno da dormência. O objetivo deste trabalho foi avaliar diferentes técnicas de superação da dormência de sementes de nogueira-pecã e o posterior desenvolvimento das plântulas. Para tanto, foram testados quatro diferentes métodos de superação de dormência, em que, nos tratamentos testemunhas, as sementes permaneceram em ambiente protegido sem qualquer tratamento; no método com escarificação, as sementes foram lixadas na parte apical no momento da semeadura e na estratificação, acomodadas em caixas com areia úmida e mantidas na temperatura de 4 ºC. Também foi testada a combinação escarificação e estratificação, simultaneamente. Os tratamentos foram compostos por 10 repetições de três sementes cada. Após cada período (30, 60 e 90 dias, as sementes foram semeadas em bandeja contendo substrato Mecplant® e mantidas a 25 ºC ± 2 ºC, sob fotoperíodo de 12 h. Avaliaram-se a altura da parte aérea, o diâmetro do colo, o número de folhas, a emergência total, o índice de velocidade de emergência, a biomassa seca, a área foliar e o comprimento da raiz pivotante. O melhor desenvolvimento de plântulas de nogueira-pecã, bem como sua emergência, foi observado no tratamento com estratificação por 90 dias e, quando combinadas escarificação mais estratificação, por 90 dias.

  11. Anti-tumor Active Fraction of Carya cathayensis Exocarp%山核桃外果皮提取物抗肿瘤活性研究

    Institute of Scientific and Technical Information of China (English)

    孙小红; 刘秀飞; 王国夫; 杜轶君; 葛建

    2012-01-01

    目的 研究山核桃外果皮抗肿瘤活性部位.方法 利用系统溶剂分离法,对山核桃外果皮进行部位分离,采用MTT法分别检测水提取物、甲醇提取物、石油醚提取物、醋酸乙酯提取物对小鼠肺癌细胞3LL、人乳腺癌细胞MCF -7、人肝癌细胞QGY - 7701、人胃癌细胞BGC - 823等4种肿瘤细胞株的生长抑制情况.结果 水提取物对上述肿瘤细胞抑制作用均不明显,甲醇和石油醚提取物对4种肿瘤细胞有抑制作用,醋酸乙酯提取物对4种肿瘤细胞有明显的抑制效果,且呈一定的浓度-效应关系.结论 山核桃外果皮的甲醇提取物、石油醚提取物及醋酸乙酯提取物具有一定的体外抗肿瘤作用.

  12. Patterns of forest succession and impacts of flood in the Upper Mississippi River floodplain ecosystem

    Science.gov (United States)

    Yin, Y.; Wu, Y.; Bartell, S.M.; Cosgriff, R.

    2009-01-01

    The widespread loss of oak-hickory forests and the impacts of flood have been major issues of ecological interest concerning forest succession in the Upper Mississippi River (UMR) floodplain. The data analysis from two comprehensive field surveys indicated that Quercus was one of the dominant genera in the UMR floodplain ecosystem prior to the 1993 flood and constituted 14% of the total number of trees and 28% of the total basal area. During the post-flood recovery period through 2006, Quercus demonstrated slower recovery rates in both the number of trees (4%) and basal area (17%). In the same period, Carya recovered greatly from the 1993 flood in terms of the number of trees (11%) and basal area (2%), compared to its minor status before the flood. Further analyses suggested that different species responded to the 1993 flood with varying tolerance and different succession strategies. In this study, the relation of flood-caused mortality rates and DBH, fm(d), can be expressed in negative exponential functions for each species. The results of this research also indicate that the growth functions are different for each species and might also be different between pre- and post-flood time periods. These functions indicate different survival strategies and emergent properties in responding to flood impacts. This research enhances our understanding of forest succession patterns in space and time in the UPR floodplain. And such understanding might be used to predict long-term impacts of floods on UMR floodplain forest dynamics in support of management and restoration. ?? 2009 Elsevier B.V.

  13. Southern pine beetle, Dendroctonus frontalis, antennal and behavioral responses to nonhost leaf and bark volatiles.

    Science.gov (United States)

    Shepherd, William P; Sullivan, Brian T

    2013-04-01

    A growing body of evidence suggests that bark beetles detect and avoid release points of volatile compounds associated with nonhost species, and thus such nonhost volatiles may have potential utility in the management of bark beetles. We used a coupled gas chromatograph-electroantennographic detector (GC-EAD) to assay the olfactory sensitivity of the southern pine beetle, Dendroctonus frontalis Zimmermann, to volatiles from leaves and bark of eight species of nonhost angiosperm trees that are common in the range of D. frontalis. Tree species sampled were red maple (Acer rubrum L.), mockernut hickory [Carya alba (L.) Nutt. ex Ell.], sweetgum (Liquidambar styraciflua L.), black tupelo (Nyssa sylvatica Marsh.), black cherry (Prunus serotina Ehrh.), southern red oak (Quercus falcata Michx.), blackjack oak [Quercus marilandica (L.) Muenchh.], and water oak (Quercus nigra L.). Beetle antennae responded to a total of 28 identifiable compounds in these samples. The relative olfactory responsiveness to 14 of these, as well as to nonanoic acid and four additional volatiles reported to be associated with nonhost angiosperms, was assessed in GC-EAD analyses of synthetic dilutions spanning six orders of magnitude. The largest response voltage amplitudes were obtained with trans-conophthorin, nonanoic acid, terpinen-4-ol, phenylethyl alcohol, and eucalyptol, whereas the lowest response thresholds were to nonanoic acid, nonanal, linalool, (E)-2-hexen-1-ol, and phenylethyl alcohol. Funnel traps baited with various combinations of eleven antennally-active angiosperm volatiles along with a standard attractant captured significantly fewer male and female D. frontalis than traps baited with the standard attractant alone. Our data suggest that a diversity of semiochemicals may be involved in host species discrimination by D. frontalis, and several may have utility in their management.

  14. Lower Mississippi River Environmental Program. Report 11. Forest Vegetation of the Leveed Floodplain of the Lower Mississippi River

    Science.gov (United States)

    1988-02-01

    styraciflua, Fraxinus pennsylvanica, Carya illinoensis and Quercus CC .-. sp. may occur but are rare and were not sampled in this study. 88. The subtype... illinoensis (Wang.) K. Koch Carya laciniosa (Michaux f.) Loudon Juglans nigra L. BETULACEAE Carpinus caroliniana Walter Ostrya virginiana (Miller) K. Koch...between Baton Rouge and Memphis include Quercus nuttallii and Ulmus crassifolia. Acer saccharinum, Carya cordiformis, Carya laciniosa, and Juglans nigra

  15. A Study of Vegetation Development in Relation to Age of River Stabilization Structures Along a Channelized Segment of the Missouri River.

    Science.gov (United States)

    1975-01-25

    Featherly (1941) both concluded that riparian woodlands develop into Quercus macrocarpa (bur oak) - Quercus borealis (red oak) - Carya illinoensis (pecan...dominated communit4 es .. ........ .. 47 Quercus- Carya -dominated communities .. ........ .. 49 Diversity ......... ....................... .. 59 Similarity...Tilia-Quercus-dominated, and Quercus- Carya -dominated vegetation. The construction dates of the stabilization structures adjacent to the sites studied

  16. A Cultural Resources Survey of Steele, New Franklin, and Main Ditches, and National Register of Historic Places Significance Testing of Sites 2PM574, 575, 577, and 23PM578, Pemiscot County Missouri

    Science.gov (United States)

    1990-07-15

    White (Quercus alba) 1 1 Pecan ( Carya illinoensis ) 1 1 Persimmon (Diospyros virginiana) T 2 2 Plum (Prunus sp.) T Red Haw (Crataegus sp.) T 1 11 Red... Carya sp.) 5 4 Shellbark (Car.ya laciniosa) T Hornbeam ( Ostrya virgin/iana) 2 Kentucky Coffee Tree(Gymnocladus dioica)T "Locust, ? T Black (Robinia

  17. Terrestrial Biological Inventory Hartwell Drainage and Levee District Greene County, Illinois.

    Science.gov (United States)

    1982-01-01

    Carya illinoensis ...Sambucus canadensis ə Ilex decidua ᝺ Cornus drummondii ə Quercus alba ə Overstory 40% Celtis occidentalis ញ Acer saccharinum 10 Carya illinoensis ...seedling) ə Carex sp. ə Saururus cernuus ə Understory 40% Ulmus americana 25 Quercus palustrus ə Carya illinoensis ə Acer saccharinum 10 flex

  18. Microbial electrosynthesis for acetate production from carbon dioxide: innovative biocatalysts leading to enhanced performance

    DEFF Research Database (Denmark)

    Aryal, Nabin

    genus including; Sporomusa ovata DSM-2662, Sporomusa ovata DSM-2663, Sporomusa ovata DSM-3300, Sporomusa acidovorans, Sporomusa malonica, and Sporomusa aerivorans. In which, S. ovata DSM-2663 was identified the most productive MES microbial catalyst among the tested group. Furthermore, the study....... ovata-driven MES, acetate production rates as well as current densitywere significantly increased to1708.3 ± 333.3 mmol d-1 m-2 and -20.4 ± 1.0 A m-2 which is almost 21.5 fold higher acetate production compared to unmodified copper foam electrode. By identifying a better MES microbial catalyst...

  19. Effect of organic fertilizers on quality and quantity characteristics of blond psyllium (Plantago ovata Forssk. clasping peperweed (Lepidium perfoilatum L., qodumeh Shirazi (Alyssum homolocarpum L. and dragon's head (Lalementia iberica L.

    Directory of Open Access Journals (Sweden)

    A. Koocheki

    2016-05-01

    Full Text Available This experiment was carried out in experimental farm of Agricultural Faculty of Ferdowsi University of Mashhad, Iran during 2010. The design was split plot with three replications. Main plots were the medicinal plant species consist of: blond psyllium (Plantago ovate Forssk., clasping peperweed (Lepidium perfoilatum L., qodumeh Shirazi (Alyssum homolocarpum L. dragon's head (Lalementia iberica L. and subplots were various organic fertilizer consist of cow manure, vermicompost (based on cow manure, coffee compost and spent mushroom compost. Results showed that medicinal plants had significant difference for number of seeds per plant, shoot dry matter, seed yield, plant height and mucilage percentage. Effect of various organic matter on all traits except for 1000-seed weight was significant. Interaction of organic fertilizers and plant was significant for dry matter. Lalementia had the most mucilage percentage (27.75% and cow manure was the best fertilizer because it had the highest amounts of dry matter (1816 kg.ha-1, seed yield (467.5 kg.ha-1, number seed per plant (550 seeds.plant-1, plant height (23.17 cm and mucilage percentage (20.75%.

  20. Vegetation and climate development on the Atlantic Coastal Plain during the late Mid-Miocene Climatic Optimum (IODP Expedition 313)

    Science.gov (United States)

    Prader, Sabine; Kotthoff, Ulrich; McCarthy, Francine; Greenwood, David

    2015-04-01

    The major aims of IODP Expedition 313 are estimating amplitudes, rates and mechanisms of sea-level change and the evaluation of sequence stratigraphic facies models that predict depositional environments, sediment compositions, and stratal geometries in response to sea-level change. Cores from three Sites (313-M0027, M0028, and M0029) from the New Jersey shallow shelf (water depth approximately 35 m) were retrieved during May to July 2009, using an ECORD "mission-specific" jack-up platform. We have investigated the palynology of sediment cores from Site M0027, 45 km off the present-day coast of New Jersey. For this study, we have focused on pollen studies for the second half of the Mid-Miocene Climatic Optimum (MMCO) and the subsequent transition to cooler conditions (ca. 15 to 13 million years before present). Transport-caused bias of the pollen assemblages was identified via the analysis of the terrestrial/marine palynomorph ratio and these results were considered when interpreting palaeo-vegetation from the pollen data. Pollen preservation in the interval analyzed herein was generally very good. Pollen grains were analyzed via both light and scanning electron microscopy. For most samples, the pollen assemblages were not highly diverse. The most abundant taxa through all samples were Quercus (oak) and Carya (hickory). Typical wetland elements like Cyperaceae, Taxodium (cypress), Nyssa (tupelo tree) and taxa today growing in the tropics and subtropics like Sapotaceae, Symplocaceae, Arecaceae (palm trees) and Alangium, which indicate particularly warm climate conditions, were only sporadically found, but indicate warmer phases during the second half of the MMCO. Herbal pollen was generally rare, but members of the Asteraceae, Apiaceae, and Ericaceae families, together with infrequent occurences of Poaceae pollen indicate the presence of areas with open vegetation. The Mid-Miocene pollen assemblages reflect a vegetation in the hinterland of the New Jersey shelf

  1. Operation and Maintenance Pools 24, 25, and 26 Mississippi and Illinois Rivers.

    Science.gov (United States)

    1975-09-01

    Acer saccharinum), pecan ( Carya illinoensis ), deciduous holly (ilex decidua), sugarberry (Celtis leavigata), ash (Fraxinus -p.), American elm (Ulmus...ivy (Rhus radicans) 13.5 American elm (Ulmus americana) 11.0 Ash (Fraxinus spp.) 10.5 Pecan ( Carya illinoensis ) 9.5 Sugarberry (Celtis laevigata) 7.3...Acer saccharinum) 60 69 Pin oak (Ouercus palustris) 31 36 Willow (Salix spp.) 12 27 Pecan ( Carya illinoensis ) 11 17 Cottonwood (Populus deltoides) 7

  2. Production and decomposition of forest litter fall on the Apalachicola River flood plain, Florida: Chapter B, Apalachicola River quality assessment

    Science.gov (United States)

    Elder, John F.; Cairns, Duncan J.

    1982-01-01

    Measurements of litter fall (leaves and other particulate organic material) and leaf decomposition were made on the bottom-land hardwood swamp of the Apalachicola River flood plain in 1979-80. Litter fall was collected monthly from nets located in 16 study plots. The plots represented five forest types in the swamp and levee areas of the Apalachicola River flood plain. Forty-three species of trees, vines, and other plants contributed to the total litter fall, but more than 90 percent of the leaf material originated from 12 species. Nonleaf material made up 42 percent of the total litter fall. Average litter fall was determined to be 800 grams per square meter per year, resulting in an annual deposition of 3.6 ? 105 metric tons of organic material in the 454-square-kilometer flood plain. The levee communities have less tree biomass but greater tree diversity than do swamp communities. The levee vegetation, containing less tree biomass, produces slightly more litter fall per unit of ground surface area than does the swamp vegetation. The swamps are dominated by three genera: tupelo (Nyssa), cypress (Taxodium) and ash (Fraxinus). These genera account for more than 50 percent of the total leaf fall in the flood plain, but they are the least productive, on a weight-perbiomass basis, of any of the 12 major leaf producers. Decomposition rates of leaves from five common floodplain tree species were measured using a standard leaf-bag technique. Leaf decomposition was highly species dependent. Tupelo (Nyssa spp.) and sweetgum (Liquidambar styraciflua) leaves decomposed completely in 6 months when flooded by river water. Leaves of baldcypress (Taxodium distichum) and diamond-leaf oak (Quercus laurifolia) were much more resistant. Water hickory (Carya aquatica) leaves showed intermediate decomposition rates. Decomposition of all species was greatly reduced in dry environments. Carbon and biomass loss rates from the leaves were nearly linear over a 6-month period, but nitrogen

  3. Impact factors of the callus inducement and growth of Carya illinoensis in vitro culture%薄壳山核桃愈伤组织诱导的影响因素

    Institute of Scientific and Technical Information of China (English)

    吕运舟; 窦全琴; 蒋泽平

    2015-01-01

    以薄壳山核桃品种马罕×波尼的杂交种子为材料,研究不同外植体来源、不同培养基成分及不同质量浓度的植物生长调节剂对愈伤组织诱导效率的影响.结果表明,MS较1/2 MS和WPM培养基更加有利于薄壳山核桃愈伤组织的诱导和继代培养;最佳植物生长调节剂组合为2.0mg/LNAA+ 0.1 mg/L6-BA;种子苗幼茎较胚根、胚轴、幼叶更适于作为愈伤组织诱导的起始外植体,愈伤诱导率为72.79%.

  4. Adventitious bud induction and proliferation of Carya illinoensis in vitro culture%薄壳山核桃试管离体培养中不定芽诱导及增殖技术的研究

    Institute of Scientific and Technical Information of China (English)

    董筱昀; 蒋泽平; 蒋春; 李永荣

    2013-01-01

    以薄壳山核桃实生幼苗具腋芽茎段为外植体,进行试管离体培养,以期研究其不定芽诱导及增殖技术.试验结果表明,在温度为28℃,光照度1 500 lx,光照时间为14 h/d的培养条件下,以MS+ 6-BA 4.0 mg/L+ IBA 0.01mg/L为组成的培养基较适宜诱导供试外植体上不定芽的发生,诱导率达87%;以1/2MS+ 6-BA 2.0 mg/L+ IBA0.1 mg/L为组成的培养基较适宜进行芽苗增殖培养,增殖系数为5.1.

  5. 美国山核桃在云南的引种研究进展及发展前景%Introduction and Research Progress of Carya illinoensis and Its Developmental Prospects in Yunnan Province

    Institute of Scientific and Technical Information of China (English)

    习学良; 范志远; 董润泉; 张雨

    2001-01-01

    总结了云南53a来对美国山核桃引种、选种、生物学特性、生态适应性、苗木繁殖、丰产栽培、虫害防治的研究进展和示范推广情况.认为美国山核桃市场潜力大,在云南栽培效益高、适栽区域广、符合该省经济林树种结构调整需要,将来定会得到大力推广发展.

  6. Introduction and Analysation of Carya illinoensis in Hubei Province%湖北省薄壳山核桃引种栽培及发展对策分析

    Institute of Scientific and Technical Information of China (English)

    徐春永; 徐永杰; 杜洋文; 邓先珍; 胡琦; 周席华

    2016-01-01

    简述了国内薄壳山核桃引种栽培概况,对湖北省近年来有关薄壳山核桃引种栽培情况进行了总结,并在分析薄壳山核桃引种栽培效果和存在问题的基础上,提出了发展对策建议.

  7. Discussion on Present Situation,Problems of Seedlings Production of Carya illinoensis and Countermeasures in Yunnan Province%云南美国山核桃种苗生产现状、存在的问题及对策

    Institute of Scientific and Technical Information of China (English)

    杨建华; 李淑芳; 习学良; 范志远

    2010-01-01

    对近几年美国山核桃种苗生产现状的分析表明,美国山核桃种子供应不足、苗木成本高,良种接穗供应不足以及苗木生产格局混乱是当前美国山核桃种苗大面积生产存在的主要问题.针对当前生产中存在的主要问题提出对策建议.

  8. On the Feasibility of Carya illinoensis (Wangenh.) K.Koch Introduction in Hubei Province%美国山核桃在湖北省引种可行性探讨

    Institute of Scientific and Technical Information of China (English)

    徐永杰; 徐春永; 杜洋文; 杜拾平; 马林江; 程军勇

    2012-01-01

    Comparing Caryan illinoensis(Wangenh.)K.Koch niche breadth with geography,climate,soil physical and chemical properties of Hubei province new habitat was presented by authors.It concluded that Caryan illinoensis(Wangenh.)K.Koch is suitable for growth in Hubei province and it's development prospects will be broad.Also it proposed that enshi,yichang area should be considered in the introduction of Caryan illinoensis(Wangenh.)K.Kochin Hubei Province,after that Wuhan and Jingzhou.And in introduction process,it required to choose deep and fertile soil,consider the micro climate factors in its entirety,at the same time.%笔者通过比较美国山核桃生态位宽与湖北省新生境的地理位置、气候、土壤理化性质,得出了湖北省基本适宜美国山核桃生长且发展前景广阔的结论,同时建议湖北省引种美国山核桃首先考虑恩施、宜昌地区,其次考虑武汉、荆州地区。引种过程中需选择土层深厚、土壤肥沃的地块建园,同时要充分考虑微气候因素。

  9. Study on Breeding Technology by Seedlings to Seedlings of Carya illinoensis%美国山核桃以苗繁苗快速扩繁技术研究

    Institute of Scientific and Technical Information of China (English)

    杨国荣; 张伟; 字全忠

    2009-01-01

    为解决美国山核桃苗木供不应求的问题,2007年3月在漾濞县进行了美国山核桃以苗繁苗快速扩繁技术试验研究.试验设2组处理1个对照.试验结果:插穗蜡封、生根粉溶液浸泡,苗床覆盖地膜、苗床上设塑料小拱棚,再覆60%~70%遮荫网的处理效果最佳,其成活率达75%.

  10. 建水县薄壳山核桃栽培管理技术浅析%Discussion on the Cultivation and Management Techniques of Carya illinoensis in Jianshui County

    Institute of Scientific and Technical Information of China (English)

    李萍; 张清

    2015-01-01

    介绍建水县薄壳山核桃栽培现状,分析薄壳山核桃栽培中,园地选择、种植时间、种植要点,以及栽后土肥水管理、间作、整形修剪等管理技术,总结薄壳山核桃的主要病虫害及其防治方法.

  11. The Introducing Achievement of Carya illinoensis and the Visions forits Industrialization Development%美国山核桃在云南引种研究成果及产业化发展前景分析

    Institute of Scientific and Technical Information of China (English)

    习学良

    2006-01-01

    从良种选育、适栽区域探索、苗木繁殖技术、丰产栽培技术及示范基地建设和人才培养等方面简述了云南32年来对美国山核桃研究取得的成果,从坚果品质、市场潜力、栽培效益、适栽范围等方面分析了美国山核桃在云南产业化开发前景,同时提出了对产业化发展的几点思考.

  12. Relación entre Condiciones de Suelo y Manejo de Huertas de Nogal Pecanero Carya illinoensis Koch con la Dinámica de la Pudrición Texana, causada por Phymatotrichum omnivorum Duggar

    OpenAIRE

    José Alfredo Samaniego Gaxiola; Teodoro Herrera Pérez; Aurelio Pedroza Sandoval; Jesús Santamaría César

    2001-01-01

    De 1995 a 1998, 26 lotes de tres ha cada uno fueron seleccionadas en huertas comerciales de nogal pecanero. El objetivo del muestreo fue relacionar la dinámica de la Pudrición Texana con el manejo de las huertas y condición de suelo. Las variables en el manejo del cultivo fueron: edad de los árboles, distancia de plantación, árboles por hectárea, manejo de plagas, número de riegos e incidencia de árboles enfermos (en 1995); para el factor suelo se consideraron tres profundidades (0-30, 30-60 ...

  13. Allelopathy of Flavonoid Extract from Carya catha yensis Exocarp on Wheat and Mung Bean Seedlings%山核桃外果皮黄酮提取液对小麦和绿豆幼苗的化感效应

    Institute of Scientific and Technical Information of China (English)

    陈向明; 马云飞

    2010-01-01

    以盆栽小麦和绿豆幼苗为材料,研究了7个浓度山核桃外果皮黄酮提取液(0.02~0.14 mg·L-1)处理对小麦和绿豆幼苗生长及其叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性、氧自由基(O2)、丙二醛(MDA)含量、相对电导率的影响.结果显示:在试验浓度范围内,各处理对小麦和绿豆生长具有促进作用;0.06~0.08 mg·L-1黄酮提取液对小麦苗高和根长的影响极显著(P<0.01),0.06 mg·L-1时根长和苗高的化感效应指数(RI)分别为0.136和0.120;0.12 mg·L-1黄酮提取液对绿豆胚根和胚轴具有极显著促进作用,对下胚轴和胚根的化感效应指数分别为0.147和0.123;适宜浓度黄酮提取液能显著提高小麦和绿豆幼苗叶片SOD、POD的活性,同时显著降低其O2产生速率、MDA含量和相对电导率.研究表明,适宜浓度的山核桃外果皮黄酮提取液具有促使小麦和绿豆幼苗生长、提高其叶片保护酶活性和增强细胞膜结构稳定性的作用.

  14. Negative effects of Phaeocystis globosa on microalgae

    NARCIS (Netherlands)

    Liu Jiesheng, [No Value; Van Rijssel, Marion; Yang Weidong, [No Value; Peng Xichun, [No Value; Lue Songhui, [No Value; Wang Yan, [No Value; Chen Jufang, [No Value; Wang Zhaohui, [No Value; Qi Yuzao, [No Value

    2010-01-01

    The potential allelopathic effects of the microalga, Phaeocystis globosa Scherffel, on three harmful bloom algae, Prorocentrum donghaiense Lu, Chattonella marina (Subrahmanyan) Hara et Chihara and Chattonella ovata Hara et Chihara were studied. The growth of C. marina and C. ovata was markedly reduc

  15. Negative effects of Phaeocystis globosa on microalgae

    NARCIS (Netherlands)

    Liu Jiesheng, [No Value; Van Rijssel, Marion; Yang Weidong, [No Value; Peng Xichun, [No Value; Lue Songhui, [No Value; Wang Yan, [No Value; Chen Jufang, [No Value; Wang Zhaohui, [No Value; Qi Yuzao, [No Value

    The potential allelopathic effects of the microalga, Phaeocystis globosa Scherffel, on three harmful bloom algae, Prorocentrum donghaiense Lu, Chattonella marina (Subrahmanyan) Hara et Chihara and Chattonella ovata Hara et Chihara were studied. The growth of C. marina and C. ovata was markedly

  16. Cultural Resources Inventory of the Montz Freshwater Diversion Project Corridor, St. Charles Parish, Louisiana. Volume 1.

    Science.gov (United States)

    1986-06-23

    Ulmus) , and pecan ( Carya illinoensis ) may occur at higher elevations, Predominant understory vegetation includes poison ivy, grape and trumpet...suggests that the trees surrounding the cemetery were not planted; all of the species identified, including pecan trees ( Carya illinoensis ), occur

  17. A Regional Guidebook for Conducting Functional Assessments of Wetland and Riparian Forests in the Ouachita Mountains and Crowley’s Ridge Regions of Arkansas

    Science.gov (United States)

    2006-12-01

    Carya cordiformis Carpinus caroliniana Nyssa sylvatica Carya tomentosa Cercis canadensis Pinus echinata Celtis laevigata Crataegus spp. Quercus alba...tomentosa Sugarberry Celtis laevigata Hackberry Celtis occidentalis Buttonbush Cephalanthus occidentalis Redbud Cercis canadensis Hawthorn Crataegus ...maple, sugarberry (Celtis laevigata ), American elm (Ulmus americana), and persimmon (Diospyros virginiana). Wetlands of higher terraces typically are

  18. Effects of entomopathogenic fungus species, and impact of fertilizers, on biological control of pecan weevil (Coleoptera: Curculionidae)

    Science.gov (United States)

    The pecan weevil, Curculio caryae (Horn), is a key pest of pecan. Prior research indicated potential to use Hypocreales fungi for suppression of C. caryae. In this study, we first compared the efficacy of two fungal spp. Beauveria bassiana (GHA strain) and Metarhizium brunneum (F52) in ability to ...

  19. Ecological and developmental dynamics of a host-parasite system involving a sea anemone and two ctenophores.

    Science.gov (United States)

    Reitzel, Adam M; Sullivan, James C; Brown, Briana K; Chin, Diana W; Cira, Emily K; Edquist, Sara K; Genco, Brandon M; Joseph, Oliver C; Kaufman, Christian A; Kovitvongsa, Kathryn; Muñoz, Martha M; Negri, Tiffany L; Taffel, Jonathan R; Zuehlke, Robert T; Finnerty, John R

    2007-12-01

    The lined sea anemone Edwardsiella lineata has evolved a derived parasitic life history that includes a novel body plan adapted for life inside its ctenophore hosts. Reputedly its sole host is the sea walnut, Mnemiopsis leidyi, a voracious planktivore and a seasonally abundant member of many pelagic ecosystems. However, we have observed substantially higher E. lineata prevalence in a second ctenophore species, the ctenophore predator Beroë ovata. The interplay among these 3 species has important conservation consequences as M. leidyi introductions are thought to be responsible for the severe depletion of numerous commercial fisheries in the Mediterranean basin, and both E. lineata and B. ovata have been proposed as biological controls for invasive M. leidyi. Over a 3-yr period (2004-2006), we collected 8,253 ctenophores from Woods Hole, Massachusetts, including M. leidyi, B. ovata, and a third ctenophore, Pleurobrachia pileus, and we recorded E. lineata infection frequencies, parasite load, and parasite location. We also conducted laboratory experiments to determine the likely mechanisms for parasite introduction and the effect of each host on parasite development. We observed peak E. lineata infection frequencies of 0% in P. pileus, 59% in M. leidyi, and 100% in B. ovata, suggesting that B. ovata could be an important natural host for E. lineata. However, in laboratory experiments, E. lineata larvae proved far more successful at infecting M. leidyi than B. ovata, and E. lineata parasites excised from M. leidyi exhibited greater developmental competence than parasites excised from B. ovata. Although we show that E. lineata is efficiently transferred from M. leidyi to B. ovata when the latter preys upon the former, we conclude that E. lineata larvae are not well adapted for parasitizing the latter species and that the E. lineata parasite is not well adapted for feeding in B. ovata; these developmental and ecological factors underlie the host specificity of this

  20. Einige Ericaceen des Leidener Herbariums

    NARCIS (Netherlands)

    Smith, J.J.

    1916-01-01

    Frutex, ramulis validiusculis, rigidis, vix tortilibus, plus minusve obtuso-trigonis vel subteretibus, glabris. Folia alterna, breviter petiolata, oblongo-ovata, sensim acuminata, angusta obtuse callosoapiculata, basi rotundata et brevissime in petiolum contracta, densius crenato-serrata, dentibus c

  1. Notes on Malaysian Malvaceae II. A new Thespesia species from New Guinea

    NARCIS (Netherlands)

    Borssum Waalkes, van J.

    1958-01-01

    Thespesia patellifera Borss., nov. spec. — Arbor altior. Ramuli subangulares, denique teretes, puberuli pilis stellatis minutissimis, glabrescentes, lenticulis minutis dispersis ornati. Stipulae appressae vel patentes, late ovatae, apice acutae, subconcavae, coriaceae, puberulae pilis stellatis minu

  2. Eine neue Calandriden-Art der Gattung Paratasis, Chevr. aus Java

    NARCIS (Netherlands)

    Heller, K.M.

    1892-01-01

    Elliptico-ovata, glabra supra planiuscula, capite, thorace pygidioque nigro; elytris viridiaeneis, singulo tenuiter quinquestriato; subtus rufo-ferruginea; tarsis, fibiis, coxis, trochanteribus, basi apiceque femorum et segmentis ventralibus apice, nigris; rostro arcuato thorace paulo breviore, ante

  3. Eine neue Calandriden-Art der Gattung Paratasis, Chevr. aus Java

    NARCIS (Netherlands)

    Heller, K.M.

    1892-01-01

    Elliptico-ovata, glabra supra planiuscula, capite, thorace pygidioque nigro; elytris viridiaeneis, singulo tenuiter quinquestriato; subtus rufo-ferruginea; tarsis, fibiis, coxis, trochanteribus, basi apiceque femorum et segmentis ventralibus apice, nigris; rostro arcuato thorace paulo breviore, ante

  4. Chautauqua National Wildlife Refuge : Timber Management Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Chautauqua National Wildlife Refuge's timber resource is largely black oak, black jack oak, hickory, elm, swamp maple, pecan, cottonwood, sycamore, and willow....

  5. 76 FR 18289 - Missouri Disaster #MO-00047

    Science.gov (United States)

    2011-04-01

    ..., Carroll, Cass, Cedar, Chariton, Clark, Clinton, Cole, Cooper, Dade, Dallas, Dekalb, Grundy, Henry, Hickory, Howard, Johnson, Knox, Laclede, Lafayette, Lewis, Linn, Livingston, Macon, Madison, Maries, Marion, Mcdonald, Miller, Moniteau, Monroe, Montgomery, Morgan, Newton, Osage, Pettis, Platte, Polk,...

  6. Freshwater Mussels (Mollusca: Bivalvia: Unionidae) of the Upper Mississippi River: Observations at Selected Sites Within the 9-Foot Navigation Channel Project for the St. Paul District, United States Army Corps of Engineers, 1977 - 1979. Volume II. Appendices.

    Science.gov (United States)

    1980-09-10

    as caz’nata A J T R H Ligwnia recta L. subrost rat a Carunculina parva Lampsilis terea L. higginsi L. radiata siliquoidea L. ovata ventricosa Plagio ...radiata siZiquc’idea 1 1 0.?2 X L. ovata ventricosa 2 2 0. 3 Plagio Za trique tra X Arcidens con fragosus 2 2 0.3 Lasmiqona camptlcnata L. cost ata L

  7. Final Environmental Assessment: Conversion of Forest Land to Road Right-of-Way

    Science.gov (United States)

    2005-04-01

    grasses characteristic of tallgrass prairies in the midwestern United States, and also include many wildflower and bird species associated with that...bluffs above streams. The Barrens of the EHR is linked to the karst topography and was once an area of tallgrass prairies . 3.4.2 Wildlife...Association. Oak-hickory forest, cedar glades, and a mosaic of bluestem prairie and oak- hickory forest dominate this association. The predominant

  8. Final Environmental Assessment, Conversion of Forest Land to Road Right-of-Way, Arnold Air Force Base, Tennessee

    Science.gov (United States)

    2005-04-01

    grasses characteristic of tallgrass prairies in the midwestern United States, and also include many wildflower and bird species associated with that...bluffs above streams. The Barrens of the EHR is linked to the karst topography and was once an area of tallgrass prairies . 3.4.2 Wildlife...Association. Oak-hickory forest, cedar glades, and a mosaic of bluestem prairie and oak- hickory forest dominate this association. The predominant

  9. Amended Ballistic Sand Studies to Provide Low Maintenance Lead Containment at Active Small Arms Firing Range Systems

    Science.gov (United States)

    2007-09-01

    Hickory Woods Drive Greenfield , IN 46140 Judith Wright UFA Ventures , Inc. 403 West Riverside Drive Carlsbad, NM 88220 Final report Approved...Suite 100, Somerset, NJ 08873; EnviroComp, Inc., 3240 Hickory Woods Drive, Greenfield , IN 46140; UFA Ventures , Inc., 403 West Riverside Drive...Judith Wright, UFA Ventures , Inc., Carlsbad, NM. We grate- fully acknowledge the technical assistance provided by Haley Parsons, ERDC-GSL; Chris

  10. Optimization of the Ultrasonic Wave Aided Extraction of Flavoniods from the Fruits of Catalpa ovata by Central Composite Design-response Surface Methodology%星点设计-效应面法优化梓树果实总黄酮的超声提取工艺

    Institute of Scientific and Technical Information of China (English)

    乔东东; 张云; 尤新军; 雷鸣; 王俊儒

    2010-01-01

    以梓树果实为材料,利用星点设计-效应面法对总黄酮的超声提取工艺参数进行优化研究.选择乙醇浓度、料液比、提取时间为自变量,总黄酮提取量为因变量,对自变量各水平进行多元线性回归和多项式拟合,采用效应面法选取较佳工艺条件,并进行预测分析.结果表明:梓树果实总黄酮的最佳提取工艺参数为乙醇浓度59%,料液比1∶44,提取时间39 min.在此工艺条件下梓树果实总黄酮提取量测定值为22.289 4 mg·g-1,最佳工艺验证结果与模型预测值相差-1.84%.

  11. Species of Juglandaceae at Peter the Great Botanic Garden at Apothecaries Island

    Directory of Open Access Journals (Sweden)

    Firsov Gennadii

    2015-12-01

    Full Text Available The first exotic species of Juglandaceae family at Peter the Great Botanic Garden of the Komarov Botanical Institute RAS in Saint-Petersburg was Juglans regia - mentioned at M. M. Terechovskij ‘s Catalogue in 1796. Twenty five taxa from 4 genera have been tested since then: Carya - 6, Juglans - 14, Platycarya - 1, Pterocarya - 4. There are 14 taxa from 3 genera in modern collection: Carya - 2, Juglans - 9, Pterocarya - 3. All species besides Carya cordiformis and Juglans nigra produce fruits. Four species of Juglans (J. ailanthifolia, J. cinerea, J. cordiformis, J. mandshurica and its hybrids produce self-sowing. There are 2 species, Juglans ailanthifolia and Pterocarya pterocarpa, which are included into the Red Data Book of Russian Federation (2008. They need In situ and Ex situ conservation and may be recommended for Saint-Petersburg’s city planting. There are considerable prospects for both repeated introduction (Carya illinoensis and primary introduction (Juglans sigillata.

  12. Cultural Resources Investigations of Larose to Golden Meadow Hurricane Protection Project Levee Section D, Lafourche Parish, Louisiana

    Science.gov (United States)

    1991-03-01

    Hardwoods that comprise the nonwetlands and the hardwood interarea include live oaks (Quercus virginiana), mayhaw ( Crataegus opaca), hackberry (Celtis... laevigata ), bitter pecan (Carya aquatica), pawpaw (Asimina triloba), and sweetgum (Liquidambar styriciflua). Plant understory includes palmetto (Sabal

  13. Archaeological Investigations at the San Gabriel Reservoir Districts, Central Texas. Volume 2.

    Science.gov (United States)

    1982-06-01

    area include pecan (CaUa illinoensis ), hackberry (Celtis reticulata), walnut (Juglans ar, willow (Salix spp.), and elm (Ulmus alta). The most common...remains recovered from Feature 6 include acorn fragments and possibly some pecan nutshell ( Carya sp.). However, the identification of pecan is tentative...was used to roast acorns (Quercus sp.), walnuts (Juglans sp.), and pecans ( Carya sp.). Since these nuts are available at app-,1ximately the same time

  14. Assessing Installation Ethnobotanical Resources Using Land Condition Trend Analysis (LCTA) Data: A Fort Riley, Kansas, Case Study

    Science.gov (United States)

    1998-07-01

    incarnata S F Carya illinoensis G L Asclepias stenophylla S B Ceanothus herbaceus S B Asclepias syriaca S B Ceanothus oliganthus S L Asclepias tuberosa S...cannabinum S B Carex retroflexa G F Argemone polyanthemos S F Carex vulpinoidea S F Artemisia ludoviciana S B Carya cordiformis S B Asclepias...longipilum G B Descurainia pinnata S F Hordeum pusillum G F Descurainia sophia S F Hymenopappus scabiosaeus G B Desmanthus illinoensis S B Hypericum

  15. Effects of combining microbial and chemical insecticides on mortality of the Pecan Weevil (Coleoptera: Curculionidae).

    Science.gov (United States)

    Shapiro-Ilan, David I; Cottrell, Ted E; Wood, Bruce W

    2011-02-01

    The pecan weevil, Curculio caryae (Horn), is a key pest of pecan [Carya illinoinensis (Wangenh.) K. Koch]. Current control recommendations are based on chemical insecticide applications. Microbial control agents such as the entomopathogenic nematode, Steinernema carpocapsae (Weiser) and the fungus Beauveria bassiana (Balsamo) Vuillemin occur naturally in southeastern U.S. pecan orchards and have shown promise as alternative control agents for C. caryjae. Conceivably, the chemical and microbial agents occur simultaneously within pecan orchards or might be applied concurrently. The objective of this study was to determine the interactions between two chemical insecticides that are used in commercial C. caryae control (i.e., carbaryl and cypermethrin applied below field rates) and the microbial agents B. bassiana and S. carpocapsae. In laboratory experiments, pecan weevil larval or adult mortality was assessed after application of microbial or chemical treatments applied singly or in combination (microbial + chemical agent). The nature of interactions (antagonism, additivity, or synergy) in terms of weevil mortality was evaluated over 9 d (larvae) or 5 d (adults). Results for B. bassiana indicated synergistic activity with carbaryl and antagonism with cypermethrin in C. caryae larvae and adults. For S. carpocapsae, synergy was detected with both chemicals in C. caryae larvae, but only additive effects were detected in adult weevils. Our results indicate that the chemical-microbial combinations tested are compatible with the exception of B. bassiana and cypermethrin. In addition, combinations that exhibited synergistic interactions may provide enhanced C. caryae control in commercial field applications; thus, their potential merits further exploration.

  16. Actividad Antifúngica de Aceites Esenciales de Canela (Cinnamomum zeylanicum Blume) y Orégano (Origanum vulgare L.) y su Efecto sobre la Producción de Aflatoxinas en Nuez Pecanera [Carya illinoensis (F.A. Wangenh) K. Koch

    OpenAIRE

    Erick Arturo García-Camarillo; Martha Yolanda Quezada-Viay; Josefina Moreno-Lara; Gabriela Sánchez-Hernández; Ernesto Moreno-Martínez; María Cristina Julia Pérez-Reyes

    2006-01-01

    Los aceites esenciales de canela (Cinnamomum zeylanicum) y orégano (Origanum vulgare) fueron evaluados para determinar su actividad antifúngica contra Aspergillus flavus y la producción de aflatoxinas en nuez pecanera. Ambos aceites presentaron actividad fungicida in vitro contra A. flavus, el aceite esencial de orégano a partir de 1000 ppm y el de canela de 2000 ppm, en medio de cultivo de malta-salagar y un efecto fungistático en 100 ppm. Sin embargo, al evaluar el efecto inhibitorio en la ...

  17. 山核桃外果皮与桑枝屑不同配方组合栽培黑木耳试验%Experiment on Cultivation of Auricularia auricula with Different Ratio of Sawdust of Mulberry Branch and Exocarp of Carya cathyensis

    Institute of Scientific and Technical Information of China (English)

    余琳; 蒋淑君; 程建斌; 王素彬; 余樟平

    2013-01-01

    连续3 a对山核桃外果皮与桑枝屑不同比例配方组合生产栽培黑木耳进行试验,结果表明:桑枝屑中添加30%~40%的山核桃外果皮栽培黑木耳,其产量、品质、出耳率均接近单纯桑枝屑配方栽培木耳,每袋干耳产量在74 ~ 74.5g,其中40%山核桃外果皮加12%麸皮其排田量、成品率和单袋产量与对照差异不显著;山核桃陈外果皮配制的菌棒其排田数、成品率、单袋重普遍优于新外果皮配制菌棒,并以40%陈山核桃外果皮+47%桑枝屑+12%麸皮+1%石膏配方组合为最优.

  18. Effects of entomopathogenic fungus species, and impact of fertilizers, on biological control of pecan weevil (Coleoptera: Curculionidae).

    Science.gov (United States)

    Shapiro-Ilan, David I; Gardner, Wayne A; Wells, Lenny; Cottrell, Ted E; Behle, Robert W; Wood, Bruce W

    2013-04-01

    The pecan weevil, Curculio caryae (Horn), is a key pest of pecan, Carya illinoinensis (Wangenh.) K. Koch. Prior research indicated the potential for use of Hypocreales fungi to suppress C. caryae. We compared the efficacy of two fungal spp., Beauveria bassiana (GHA strain) and Metarhizium brunneum (F52), in their ability to cause C. caryae mortality. The fungus, B. bassiana, was applied to trunks of pecan trees (a method previously shown to be effective in C. caryae suppression) and efficacy was compared with M. brunneum applied to the ground or to the trunk with or without SoyScreen Oil as an ultraviolet protecting agent. Results indicated B. bassiana to be superior to M. brunneum regardless of application method; consequently, the potential for applying B. bassiana to control C. caryae was explored further. Specifically, the impact of different fertilizer regimes (as used by pecan growers) on the persistence of B. bassiana (GHA) in soil was determined. B. bassiana was applied to soil in a pecan orchard after one of several fertilizer treatments--i.e., ammonium nitrate, crimson clover, poultry litter, clover plus poultry litter, and a no-fertilizer control. B. bassiana persistence up to 49 d in 2009 and 2010 was assessed by plating soil onto selective media and determining the number of colony forming units, and by baiting soil with a susceptible host, Galleria mellonella (L.). Fertilizer treatments did not impact B. bassiana persistence. We conclude that standard fertilizers for nitrogen management, when applied according to recommended practices, are unlikely to negatively impact survival of B. bassiana in pecan orchards when the fungus is applied for C. caryae suppression during weevil emergence. Additional research on interactions between entomopathogenic fungi and fertilizer amendments (or other tree nutrition or soil management practices) is merited.

  19. The genus Bathysciola Jeannel, 1910 in the Iberian Peninsula and Pyrenees. Taxonomic revision of the Sections IV, VI and VII (Jeannel, 1924 (Coleoptera, Cholevide, Leptodirinae

    Directory of Open Access Journals (Sweden)

    Fresneda, J.

    2006-06-01

    Full Text Available The taxonomy of the Iberian and Pyrenean species of Bathysciola Jeannel, 1910 (sections IV, VI and VII of Jeannel, 1924 is revised. The proposed ordenation is based on the study of the genital structures of both sexes, in particular the sclerotised shield of the internal sac of the aedeagus. According to the different models of internal sac were identified the following species groups in the genus Bathysciola Jeannel, section IV: aubei group of Peyerimhoff (1 taxon: B. aubei (Kiesenwetter; madoni new group (2 taxa: B. madoni Jeannel and B. penicillata Jeannel; zariquieyi new group (2 taxa: B. zariquieyi zariquieyi Bolívar and B. zariquieyi serratensis Coiffait; section VII or ovata group of Perreau (8 taxa: B. asperula asperula (Fairmaire, B. asperula subasperata (Saulcy (= intermedia Jeannel, B. ovata ovata (Kiesenwetter, B. ovata aragonica Coiffait, B. ovata catalana Coiffait, B. ovata gabasensis Hustache, B. simonis (Abeille de Perrin and B. talpa (Normand; section VI: lapidicola new group (4 taxa: B. arcuatipes Jeannel, B. lapidicola lapidicola (Saulcy, B. lapidicola rectipes Coiffait and B. lapidicola simplex Coiffait; meridionalis new group (3 taxa: B. finismillennii sp. n., B. grenieri (Saulcy and B. meridionalis (J. Du Val (= nitidula Normand; larcennei new group (2 taxa: B. convena Jeannel new rank and B. larcennei (Abeille de Perrin; schiodtei group of Perreau (9 taxa: B. bigerrica Jeannel new rank (= convexa Coiffait n. syn., B. breuili Bolívar (= azuai Bolívar n. syn., B. diegoi Salgado & Fresneda, B. fauveli Jeannel, B. grandis (Fairmaire, B. obermaieri Bolívar, B. parallela (Jeannel, B. rugosa (Sharp and B. schiodtei (Kiesenwetter (= navarica Coiffait. Incertae sedis: Bathysciola aranensis Coiffait and Bathysciola minuscule (Abeille de Perrin.Se realiza una revisión taxonómica de las secciones IV, VI y VII (Jeannel, 1924 con las especies Ibéricas y de los Pirineos del género Bathysciola. Esta propuesta de ordenación tiene

  20. Pickling process of capers (Capparis spp. flower buds

    Directory of Open Access Journals (Sweden)

    Özcan, Musa

    1999-04-01

    Full Text Available Middle sized (8 < x < 13 mm buds of Capparis spinosa var. spinosa and C. ovata var. canescens from June in brines containing 5,10,15 and 20% salt and from August in brines of 15% salt, and three different size (x < 8 mm, 8 < x < 13 mm, x > 13 mm buds of C. . ovata var. canescens from June in brines of 15% salt were pickled for two months fermentation. Some chemical and microbiological analyses were done in brines during fermentation. Most suitable salt concentration for lactic acid bacteria (LAB activity were 5% and partly 10%. Acidity, LAB activity, sedimentation and hardness were reduced by increasing bud size in C. ovata. Small buds of C. ovata for pickling product had advantage for colour and flavour, however, more sediment and partly softening showed disadvantage. For both species, pickling time was determined as 40 to 50 days in regard of end-product flavour and odour, brine acidity and pH, and LAB activity.

    Se encurtieron durante dos meses botones florales de tamaño medio (8 < x < 13 mm de Capparis spinosa var. spinosa y C. ovata var. canescens, los recolectados en Junio en salmueras conteniendo 5, 10, 15 y 20% de sal, y los de Agosto en salmueras de 15% de sal; y tres tamaños diferentes (x < 8 mm, 8 < x < 13 mm, X > 13 mm de C. ovata var. canescens de Junio en salmueras de 15% de sal. Se realizaron algunos análisis químicos y microbiológicos durante la fermentación. Las concentraciones de sal más adecuadas para la actividad de las bacterias del ácido láctico (LAB fueron 5% y parcialmente 10%. Acidez, actividad de LAB, sedimentación y firmeza (hardness se redujeron al incrementar el tamaño de las alcaparras de C. ovata. Los tamaños pequeños de C. ovata presentaron en el producto encurtido ventajas en color y sabor, pero desventajas por más sedimento y ablandamiento parcial. El tiempo de encurtido para ambas

  1. Wetlands Research Program. Corps of Engineers Wetlands Delineation Manual. Appendix C. Sections 1 and 2. Region 2 - Southeast.

    Science.gov (United States)

    1987-01-01

    Michx. f.) Nutt. Water hickory OBL "’"~"?B(Wangenh. ) K. Koch Bitternut hickory FAC 7.i re~.ss(Wangenh.) K. Koch Pecan FAC+ a -_7.osa (Michx. f...leptcphyllwn ( Peru .) Ciclospermum FAC+ Sprague ex Britton Cicuta macuZata L. Common vaterhemlock OBL Cn’fexcana C. & R. Mexican vaterhemlock OBL,nna...dogwood FACW ran.ic;"is rmscosa Swartz Granichis 7rasszi~a aquat- ica (L.) Schoenl. Grassula. OBL DRA 7r-_:aegqus aestivais (Walter) Torr. May hawthorn OBL

  2. Evidence that Cerambycid Beetles Mimic Vespid Wasps in Odor as well as Appearance.

    Science.gov (United States)

    Mitchell, Robert F; Curkovic, Tomislav; Mongold-Diers, Judith A; Neuteboom, Lara; Galbrecht, Hans-Martin; Tröger, Armin; Bergmann, Jan; Francke, Wittko; Hanks, Lawrence M

    2017-01-01

    We present evidence that cerambycid species that are supposed mimics of vespid wasps also mimic their model's odor by producing spiroacetals, common constituents of vespid alarm pheromones. Adults of the North American cerambycids Megacyllene caryae (Gahan) and Megacyllene robiniae (Forster) are conspicuously patterned yellow and black, and are believed to be mimics of aculeate Hymenoptera, such as species of Vespula and Polistes. Adult males of M. caryae produce an aggregation-sex pheromone, but both sexes produce a pungent odor when handled, which has been assumed to be a defensive response. Headspace aerations of agitated females of M. caryae contained 16 compounds with mass spectra characteristic of spiroacetals of eight distinct chemical structures, with the dominant compound being (7E,2E)-7-ethyl-2-methyl-1,6-dioxaspiro[4.5]decane. Headspace samples of agitated males of M. caryae contained five of the same components, with the same dominant compound. Females of M. robiniae produced six different spiroacetals, one of which was not produced by M. caryae, (2E,7E)-2-ethyl-7-methyl-1,6-dioxaspiro[4.5]decane, and five that were shared with M. caryae, including the dominant (2E,8E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane. The latter compound is the sole spiroacetal produced by both males and females of a South American cerambycid species, Callisphyris apicicornis (Fairmaire & Germain), which is also thought to be a wasp mimic. Preliminary work also identified spiroacetals of similar or identical structure released by vespid wasps that co-occur with the Megacyllene species.

  3. Vorläufige Beschreibungen neuer papuanischer Ericaceae

    NARCIS (Netherlands)

    Smith, J.J.

    1915-01-01

    Fruticulus pusillus, 6—17 cm. altus, ramulis tenuibus, densius angulato-lepidotis. Folia minima, alterna, oblongo-ovata, utrinque obtusa, crenulata, sparse lepidota, rigide carnosa, 0.37—0.75 cm. longa, 0.2—0.3 cm. lata; petiolus lepidotus, 0.1—0.225 cm. longus. Inflorescentiae 1—2 florae, ramentis

  4. A new Strychnos from Borneo (Loganiaceae)

    NARCIS (Netherlands)

    Leenhouts, P.W.

    1966-01-01

    A subsp. maingayi praecipue characteribus sequentibus differt: Folia 13 cm longa, 5½ cm lata. Inflorescentiae praecipue axillares, tenerae, 1½—2 cm longae, 3—11-florae, glabrae. Flores 4- vel 5-meri. Calyx heterosepalus, sepala dua 1.2 mm longa, tria 0.8 mm longa, omnia ovata, obtusa, extus glabra,

  5. Environ: E00780 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00780 Psylla Medicinal herb Arabinoxylan [CPD:C01889], Oil and fat, Aucubin [CPD:C...09771] Plantago ovata [TAX:185002] Plantaginaceae Psylla seed and husk Medicinal herbs [BR:br08322] Dicot plants: asterids Plantaginaceae (speedwell family) E00780 Psylla ...

  6. New species in Alectryon (Sapindaceae)

    NARCIS (Netherlands)

    Leenhouts, P.W.

    1987-01-01

    Descriptio typi: Arbor 11 m alta, 20 cm diam. Ramuli teretes, 4-5 mm crassi, glabrati. Folia 4-jugata; petiolus teres, ca. 7,5 cm longus, 2 mm crassus; petioluli 4-5 mm longi, supra applanati; axes foliorum pilosi, glabrati. Foliola opposita, 9,5-16 cm longa, 5-6 cm lata, ratione ca. 2-3, ovata vel

  7. Vorläufige Beschreibungen neuer papuanischer Orchideen, XIII

    NARCIS (Netherlands)

    Smith, J.J.

    1915-01-01

    Caulis erectus, 48 cm. longus, inferne longitudine 28 cm. vaginatus, parte superiore foliatus. Folia 8, lanceolata, acute acuminata, 8—17 cm. longa, 2—3.5 cm lata. Inflorescentia laxius 20- flora, pedunculo 12 cm. longo, rachide 9cm. longa. Bracteae ovatae, longe acuminatae, ad 2 cm longae. Flores 1

  8. The Finding and Phylogenetic Evolution Analysis of Bovine Piroplasms in the Rasŏn Area of North Korea

    Institute of Scientific and Technical Information of China (English)

    JIA Li-jun; ZHANG Shou-fa; CAO Shi-nuo; QIAN Nian-chao; YU Long-zheng; XUAN Xue-nan

    2013-01-01

    The objective of this study was to investigate the epidemiology of bovine Piroplasms infections in the Rasŏn area of North Korea. The survey was carried out by light microscopic examination of Giemsa-stained blood smears, PCR, and phylogenetic evolution analysis of 128 blood samples collected from the Rasŏn area. The results showed that the infection rates of the small and large parasites were about 2.5 and 1.5% on average, respectively, in all Theileria sergenti and Babesia ovata-positive blood smears by microscopic examination of blood smears. The detection rate of T. sergenti Giemsa-stained smears was 43.75%, while that with PCR was 67.97%. The detection rate of B. ovata Giemsa-stained smears was 49.21%, while that with PCR was 71.88%. The sequence and phylogenetic analysis of DNA showed 98.84%homology between the 18S rRNA gene sequences of T. sergenti isolates from North Korean and that of Yanbian state from China, indicating the closest genetic relationship between both of them. Moreover, 100%homology was shown between the 18S rRNA gene sequence of B. ovata isolates from North Korea and the published sequence AY081192 of GenBank, indicating the closest genetic relationship between both of them. This survey confirmed that Rasŏn is the endemic area of T. sergenti and B. ovata in North Korea.

  9. Hypoglycemic and Hypolipidemic Potential of a High Fiber Diet in Healthy versus Diabetic Rabbits

    Directory of Open Access Journals (Sweden)

    Raquel Díez

    2013-01-01

    Full Text Available The aim of this study was to investigate potential hypoglycaemic and hypolipidemic effects of Plantago ovata husk included in the diet, in healthy and diabetic rabbits. We also examined the effects of this fiber in other biochemical parameters. Two groups of 18 rabbits were used. The first group was fed with standard chow and the second with chow supplemented with Plantago ovata husk (3.5 mg/kg/day. On day 14 diabetes mellitus was induced by the intravenous administration of alloxan (80 mg/kg. After an oral glucose load (3 g, glucose, insulin, and other biochemical parameters were determined on day 14 (healthy rabbits and on day 28 (diabetic rabbits. In healthy rabbits, fiber did not modify glucose or insulin levels but decreased significantly total cholesterol, LDL-cholesterol, atherogenic index, and glycosylated hemoglobin. In diabetic rabbits, fiber was more beneficial in mild diabetics than in severe diabetics with significant decreases in glucose levels and increases in insulin concentrations. In these animals fiber caused an important reduction in cholesterol, indicating a beneficial effect of Plantago ovata husk in diabetic rabbits. Although further studies in patients are necessary, we think that Plantago ovata husk offers interesting perspectives to be administered to patients with diabetes mellitus.

  10. Descriptions de Coléoptères nouveaux de la famille des Eumolpides

    NARCIS (Netherlands)

    Lefèvre, M.Ed.

    1890-01-01

    Breviter ovata, convexa, subtus brunneo-picea, capite prothoraceque nigris, viridi-reflexo-œnescentibus, nitidis, labro, palpis, antennis pedibusque fulvis, elytris fulvis (sutura tota lata nigro-picea, vage reflexo-œnea), singulo maculis duabus (altera intra impressionem basalem,, postice magis min

  11. Levenscyclus en systematiek van drie nauw verwante

    NARCIS (Netherlands)

    Heessen, H.J.L.

    1972-01-01

    Acerina cernua, collected in December 1971 and January 1972 from the IJsselmeer, was infected with Tetracotyle ovata (body cavity and pericardial cavity) and T. percaefluviatilis (air-bladder), Osmerus eperlanus, from the same lake, was infected with Tetracotyle

  12. The pollination syndrome

    NARCIS (Netherlands)

    Steenis, van C.G.G.J.

    1980-01-01

    Recently I came across a paper on the pollination of the terrestrial orchid Listera ovata and I have observed with pleasure that the author also checked on the ’reverse’ side of pollination, viz. the question whether cross-pollination by insects is compulsory. This reminded me of the large list of M

  13. A new Maculotriton

    NARCIS (Netherlands)

    Bayer, Ch.

    1933-01-01

    Drupa (Maculotriton) buitendijki n. sp. (Pl. I, fig. 1). Testa parvula, tenuis, elongato-turrita, nitidula. Anfractus 10, apice laevi anfractibus 3l/2 annumerata, liris subtilimis, longitudinalibus et transversis ad decussationem nodulosis reticulata Varices 10. Apertura ovata, utrinque attenuata, l

  14. Cultural Resource Investigations in the L’Anguille River Basin, Lee, St. Francis, Cross and Poinsett Counties, Arkansas.

    Science.gov (United States)

    1989-01-01

    hornbeam (Carp inus / Ostrya), tuliptree (Liriodendron tulipifera), butternut (Juglans cinerea), and black walnut (Juglans nigra ). Trace...arrow wood (Viburnum acerifolium type), boxelder, cottonwood (Populus deltoides type), persimmon, mulberry ( Morus ), silver maple, and winged sumac...nuts and caps). Additional fossils were recovered for hickory, as well as for the swamp-bottomland trees of river birch (Betula nigra ), sycamore, water

  15. Activities of five enzymes following soil disturbance and weed control in a Missouri forest

    Science.gov (United States)

    Felix, Jr. Ponder; Frieda Eivazi

    2008-01-01

    Forest disturbances associated with harvesting activities can affect soil properties including enzyme activity and overall soil quality. The activities of five enzymes (acid and alkaline phosphatases, betaglucosidase, aryl-sulfatase, and beta-glucosominidase) were measured after 8 years in soil from clearcut and uncut control plots of a Missouri oak-hickory (...

  16. Location and Description of Transects for Ecological Studies in Floodplain Forests of the Lower Suwannee River, Florida

    Science.gov (United States)

    2002-01-01

    Sweet pignut hickory cellae Celtis laevigata Nutt. hackberry cepocc Cephalanthus occidentalis L. buttonbush corfoe Cornus foemina Mill. stiffcornel...dogwood crafla Crataegus flava Ait. yellow haw cravir Crataegus viridis L. green haw cyrrac Cyrilla racemiflora L. titi diovir Diospyros virginiana L

  17. Climate change vulnerabilities within the forestry sector for the Midwestern United States

    Science.gov (United States)

    Stephen D. Handler; Chris W. Swanston; Patricia R. Butler; Leslie A. Brandt; Maria K. Janowiak; Matthew D. Powers; P. Danielle. Shannon

    2014-01-01

    Forests are a defining landscape feature for much of the Midwest, from boreal forests surrounding the northern Great Lakes to oak-hickory forests blanketing the Ozarks. Savannas and open woodlands within this region mark a major transition zone between forest and grassland biomes within the U.S. Forests help sustain human communities in the region, ecologically,...

  18. Fire and Thinning in an Ohio Oak Forest: Grid-Based Analyses of Fire Behavior, Environmental Conditions, and Tree Regeneration Across a Topographic Moisture Gradient

    Science.gov (United States)

    Louis Iverson; Anantha Prasad; Todd Hutchinson; Joanne Rebbeck; Daniel A. Yaussy

    2004-01-01

    Prescribed fire alone and in combination with thinning were accomplished in late 2000 to spring 2001 at Zaleski State Forest in southern Ohio. Sites were monitored before and after the treatments were applied. Light was assessed via hemispherical photographs taken in July 2000 and 2001. Oak and hickory seedlings and saplings were sampled during those same time periods...

  19. Two North Carolina Sears Stores Among Top Finishers in EPA's Energy Star Battle of the Buildings Competition

    Science.gov (United States)

    ATLANTA - Sears Stores in Asheville and Hickory, N.C. were recognized this week by the U.S. Environmental Protection Agency (EPA) as part of a top finishing team in the agency's fifth-annual Energy Star Battle of the Buildings Competition. These sto

  20. A comparison of forest dynamics at two sites in the Southeastern Ozark Mountains of Missouri

    Science.gov (United States)

    Michael A. Jenkins; Stephen G. Pallardy

    1993-01-01

    Changes in tree species composition and regeneration patterns were studied in 53 permanent vegetation plots located at two sites (Pioneer Forest and University State Forest) in oak-hickory forests of southeastern Missouri where mortality and decline of red oak species have been identified. The two sites also exhibited differing levels of decline and mortality. Between...

  1. 76 FR 24537 - Investigations Regarding Certifications of Eligibility To Apply for Worker Adjustment Assistance...

    Science.gov (United States)

    2011-05-02

    ... Worth, TX........ 04/11/11 04/11/11 Stop). 80103 HIRel Systems LLC (State/ Duluth, MN 04/12/11 04/11/11.... Hickory, NC 04/13/11 04/13/11 (Company). 80106 Delphi (Workers) El Paso, TX 04/14/11 04/05/11 80107...

  2. Environmental Assessment. Dredged Material Thalweg Placement Site Mississippi River Miles 561.0 - 561.4 Island 241, Pool 12

    Science.gov (United States)

    1992-10-01

    from the first run: two hickory nuts (Obovarla ollvarla); one pig toe (Fusconla flava); and one zebra mussel (Dreisvena polymorpha). The zebra mussel...AVENUE COURT ROCK ISLAND IL 61201 JOSEPH 0. STOFFREGEN 304 SUMMIT Dist/Copies GALENA, IL 61036 JUDY WEIGERT 406 PEACH Dist/Copies EAST DUBUQUE

  3. The genera Macroxyela Kirby and Megaxyela Ashmead (Hymenoptera: Xyelidae) in North America

    Science.gov (United States)

    David R. Smith; Nathan M. Schiff

    1998-01-01

    Five species of Megaxyela, including Megaxyela alisonae, n. sp., and two species of Macroxyela occur in North America. Macroxyela bicolor MacGillivray is a new synonym of Macroxyela ferruginea (Say). The species are keyed, described, and illustrated, and biological information is summarized. Hosts include hickory, pecan, and elm.

  4. Making Connections. A Curriculum and Activity Guide to Mammoth Cave National Park. [Grades] K-3.

    Science.gov (United States)

    National Park Service (Dept. of Interior), Washington, DC.

    Kentucky's Mammoth Cave National Park is important because of its diversity of life on the surface and underground. Some of the plants in the park include trees such as oaks, hickories, tulip poplars, sycamores, and many types of bushes. The animal population is also very diverse and includes bats, squirrels, deer, raccoons, opossums, chipmunks,…

  5. Oak mortality associated with crown dieback and oak borer attack in the Ozark Highlands

    Science.gov (United States)

    Zhaofei Fan; John M. Kabrick; Martin A. Spetich; Stephen R. Shifley; Randy G. Jensen

    2008-01-01

    Oak decline and related mortality have periodically plagued upland oak–hickory forests, particularly oak species in the red oak group, across the Ozark Highlands of Missouri, Arkansas and Oklahoma since the late 1970s. Advanced tree age and periodic drought, as well as Armillaria root fungi and oak borer attack are believed to contribute to oak decline and mortality....

  6. Microbial properties and litter and soil nutrients after two prescribed fires in developing savannas in an upland Missouri Ozark Forest

    Science.gov (United States)

    Felix, Jr. Ponder; Mahasin Tadros; Edward F. Loewenstein

    2009-01-01

    On some landscapes periodic fire may be necessary to develop and maintain oak-dominated savannas. We studied the effects of two annual prescribed burns to determine their effect on microbial activity and soil and litter nutrients 1 year after the last burn. Surface litter and soil from the upper 0?5 cm soil layer in three developing savannas (oak-hickory, ...

  7. Comparative reaction engineering analysis of different acetogenic bacteria for gas fermentation.

    Science.gov (United States)

    Groher, Anna; Weuster-Botz, Dirk

    2016-06-20

    The production of chemicals by syngas fermentation is a promising alternative to heterotrophic fermentation processes. The autotrophic process performances of the so far not well studied acetogens Acetobacterium fimetarium, Acetobacterium wieringae, Blautia hydrogenotrophica, Clostridium magnum, Eubacterium aggregans, Sporomusa acidovorans, Sporomusa ovata and Terrisporobacter mayombei were characterized. Acetobacterium woodii was used as reference strain. Standardized batch experiments with continuous supply of the gaseous substrates CO2 and H2 were performed in fully controlled stirred-tank bioreactors. A. wieringae and S. ovata showed by far the highest growth rates and maximum biomass concentrations among the acetogens under study. Aside from the reference strain A. woodii, highest volumetric (17.96gL(-1)d(-1)) as well as cell specific acetate formation rates (21.03gg(-1)d(-1)) were observed with S. ovata resulting in a final acetate concentration of 32.2gL(-1). Accumulation of formate with up to 4.8gL(-1) was observed with all acetogens. Ethanol was produced autotrophically with up to 0.42gL(-1) by four of the acetogenic bacteria under study (A. wieringae, C. magnum, S. acidovorans and S. ovata) and also by A. woodii. Butyrate was formed with up to 0.14gL(-1) by three of the acetogenic bacteria under study (C. magnum, B. hydrogenotrophica and E. aggregans). Due to its superior process performances S. ovata may be a promising host for redirecting carbon fluxes by applying metabolic engineering and tools of synthetic biology to produce non-natural chemicals from syngas.

  8. Infectivity of Steinernema carpocapsae and S. feltiae to larvae and adults of the hazelnut weevil, Curculio nucum: Differential virulence and entry routes

    Science.gov (United States)

    The hazel nut weevil, Curculio nucum, is a major pest of hazel nuts, particularly in Europe; hazel nut weevil is also closely related to other nut-attacking weevils such as pecan weevil (Curculio caryae). In this study, the basis for differential susceptibility of the hazelnut weevil (to entomopatho...

  9. Recreational Appendix Report, Elm Fork Flood Control Project, Dallas and Denton Counties, Texas.

    Science.gov (United States)

    1973-05-01

    Juniperus virginiana 2. Willow Salix nigra 3. Cottonwood Populus deltoides 4. Black Walnut Juglans migra 5. Pecan Carya illinoensis 6. Bur Oak...Maclura pomifera 12. Red Mulberry Morus rubra 13. Sycamore Platanus occidentailis 14. Red Haw Crataegus, sps. 15. Wild Plum Prunus mexicana 16. Mesquite

  10. Status and Trend of Cottonwood Forests Along the Missouri River

    Science.gov (United States)

    2010-03-03

    Celtis occidentalis), box elder (Acer negundo), red and white mulberry ( Morus rubra and M. alba, respectively), pecan (Carya illinoinensis), American...or willow dominate the shrub layer of younger stands (Figure 22a,b). Willows (Salix exigua, S. nigra ) were particularly an important component of

  11. Plant Growth Regulators as Potential Tools in Aquatic Plant Management: Efficacy and Persistence in Small-Scale Tests

    Science.gov (United States)

    1994-01-01

    characteristics of Carya illinoensis ," Acta Hortic. 179:287-8. Zar, J. H. (1974). Biostatistical analysis. Prentice-Hall, Englewood Cliffs, NJ. 58...3 M aterials and Methods .................................... 4 Plant cultures ...Procedures for Detecting Flurprimidol Residues in Water, Plant Tissues , and Soil ..................................... 30 Introduction

  12. Establishment and early development of 'Kanza', 'Peruque', and other pecan cultivars in northern U.S. growing regions

    Science.gov (United States)

    Most pecan (Carya illinoensis) nut production in the northern range of the species (Missouri, Kansas, Northern Arkansas) is from managed wild trees. Orchards of trees grafted to improved cultivars are slowly being established in the region as economic opportunities improve. Pecan cultivars that are ...

  13. Vertical distribution of scab in large pecan trees

    Science.gov (United States)

    Pecan scab (caused by Fusicladium effusum) is a destructive disease of pecan (Carya illinoensis) grown in humid environments, such as the southeastern US. The disease can cause severe yield loss, and although much is known about the processes of dispersal and infection, there is no information on di...

  14. Distribution, hosts and identification of Meloidogyne partityla in the USA

    Science.gov (United States)

    Pecan, Carya illinoensis, is an economically important nut crop and member of the Juglandaceae native to the southern USA. Discovered in South Africa in 1986, Meloidogyne partityla was first found infecting pecan in USA in 1996 and currently occurs in Texas, New Mexico, Georgia, Arizona, Oklahoma a...

  15. 世界著名干果--薄壳山核桃

    Institute of Scientific and Technical Information of China (English)

    代邦元

    2005-01-01

    @@ 薄壳山核桃[Carya illinoensis(Wangenh.)k.Koch.]为胡桃科山核桃属落叶乔木.20世纪初从美国引种,现在我国江苏、浙江、湖南、四川、江西、福建等省均有种植.

  16. A Regional Guidebook for Applying the Hydrogeomorphic Approach to Assessing Wetland Functions of Forested Wetlands in the West Gulf Coastal Plain Region of Arkansas

    Science.gov (United States)

    2005-08-01

    or shrub species in reference standard sites, but may dominate in degraded systems Quercus laurifolia Acer rubrum Celtis laevigata Quercus...but may dominate in degraded systems Carya aquatica Acer rubrum Carpinus caroliniana Fraxinus pennsylvanica Diospyros virginiana Crataegus spp...Celtis laevigata Cretaegus spp Nyssa sylvatica Fraxinus pennsylvanica Diospyros americana Quercus pagoda Liquidambar styraciflua Ilex opaca

  17. A new species of Phanerotoma Wesmael (Hymenoptera: Braconidae: Cheloninae) parasitoid of the carob moth in South Africa.

    Science.gov (United States)

    Achterberg, Cornelis VAN; Thackeray, Sean R; Hill, Martin P

    2017-01-31

    A new species, Phanerotoma carobivora van Achterberg & Thackeray, sp. nov. is described from South Africa. It is a common endoparasitoid of the carob moth (Ectomyelois ceratoniae Zeller (Pyralidae) on pecan (Carya illinoinensis (Wangenh.) K. Koch) and citrus fruits in South Africa. Mean percentage of parasitism varied 2-30% between host plants and sampled localities.

  18. New insight into pecan boron nutrition

    Science.gov (United States)

    Alternate bearing by individual pecan [Carya illinoinensis (Wangenh.) K. Koch] trees is problematic for nut producers and processors. There are many unknowns regarding alternate bearing physiology, such as the relationship between boron and fruit set, nutmeat quality, and kernel maladies. Evidence...

  19. Shoot dieback in pecan

    Science.gov (United States)

    Two shoot dieback maladies (SDM) of pecan [Carya illinoinensis (Wangenh.) C. Koch] are of unknown cause and can adversely affect canopy health. They occur during either early spring (SpSDM) or early summer (SuSDM). Field evaluation found that both maladies predominately occur on shoots retaining p...

  20. Relationship of shoot dieback in pecan to fungi and fruiting stress

    Science.gov (United States)

    Two shoot dieback maladies (SDM) of pecan [Carya illinoinensis (Wangenh.) C. Koch] are of unknown cause and can adversely affect tree canopy health. They occur during either early spring (SpSDM) or early summer (SuSDM). Field studies found that both maladies predominately occur on shoots retaining...

  1. Effects of 1,1-Dimethylpiperidinium Chloride on the Pests and Allelochemicals of Cotton and Pecan.

    Science.gov (United States)

    P. A. Hedin; J. N. Jenkins; J. C. McCarty; J. E. Mulrooney; W. L. Parrott; A. Borazjani; C. H. Graves; T. H. Filer

    1984-01-01

    The growth regulator, PIX (mepiquat chloride - 1,1-dimethyl-piperdinium chloride), when applied to cotton (Gossypium hirsutum L.) and pecan (Carya illinoensis Koch), caused internode shortening. PIX did not elicit an increase in resistance in cotton to the tobacco budworm (Heliothis virescens (Fab.)], or in pecan...

  2. Sustainable Application of Pecan Nutshell Waste: Greener Synthesis of Pd-based Nanocatalysts for Electro-oxidation of Methanol

    Science.gov (United States)

    Palladium-based electrocatalysts are widely used in alkaline direct alcohol fuel cells. Thesynthesis and characterization of carbon-supported bimetallic nanoparticles (NP) of AuPdand AgPd is described using pecan nutshell extract (Carya illinoinensis) which serves asboth, reducin...

  3. Growth and mortality of pin oak and pecan reforestation in a constructed wetland: analysis with management implications

    Science.gov (United States)

    D.E. Henderson; P. Botch; J. Cussimanio; D. Ryan; J. Kabrick; D. Dey

    2009-01-01

    Pin oak (Quercus palustris Muenchh.) and pecan (Carya illinoensis (Wangenh.) K. Koch) trees were planted on reforestation plots at Four Rivers Conservation Area in west-central Missouri. The study was conducted to determine survival and growth rates of the two species under different production methods and environmental variables....

  4. Suppression of pecan scab by nickel

    Science.gov (United States)

    The economic cost of scab, caused by Fusicladium effusum, can substantially limit the profitability of pecan [Carya illinoinensis (Wangenh.) K. Koch] cultivation in humid environments. Field and greenhouse experiments assessed the influence of nickel (Ni) on scab severity on fruit and foliage of Ni...

  5. Influence of nickel on severity of pecan scab

    Science.gov (United States)

    Pecan scab, caused by Fusicladium effusum, is a major factor limiting profitability of pecan (Carya illinoinensis) in humid environments. The effect of nickel (Ni) on the severity of pecan scab was examined in both field and lab studies in 2005 to 2010. Application of Ni sprays to foliage in tree ca...

  6. Nickel deficiency is influenced by the relative concentrations of Zn, Cu, and Fe to Ni within tree organs and cells

    Science.gov (United States)

    The occurrence of nickel (Ni) deficiency of pecan [Carya illinoinensis (Wangenh.) K. Koch] in orchards is an increasingly common problem. There is uncertainty regarding the primary cause of the problem, as orchard soils have plenty of Ni. The influence of essential micronutrients on the endogenous...

  7. Foliar application of nickel and copper on pecan performance

    Science.gov (United States)

    The mobilization and conversion of reserve nitrogen (N) is critical for pecans [Carya illinoinensis (Wang.) K. Koch] during early spring when trees begin growing actively. Conversion of N reserves to translocatable forms (amides, amino acids, ureides) is adversely affected by a nickel (Ni) shortage...

  8. Foliar boron and nickel applications reduce water-stage fruit-split of pecan

    Science.gov (United States)

    Water-stage fruit-split (WSFS) is a relatively common and often major problem of certain pecan [Carya illinoinensis (Wangenh.) K. Koch] cultivars. This study evaluates the possibility that the malady can be influenced by improving tree micronutrient nutrition. Foliar sprays of boron (B) and nickel...

  9. Supplemental foliar nickel and copper applications do not reduce kernel necrosis in pecan trees receiving excess nitrogen

    Science.gov (United States)

    Pecan [Carya illinoinensis (Wang.) K. Koch] fruit developed necrotic tissue at the basal end of the kernels (cotyledons) in an orchard receiving unusually high amounts of nitrogen (N) from nitrate contaminated irrigation water. It was hypothesized that increasing canopy nickel (Ni) and copper (Cu) ...

  10. Increasing foliar Zn:Ni or Cu:Ni concentration ratios increase severity of nickel deficiency symptoms

    Science.gov (United States)

    The occurrence of nickel (Ni) deficiency of pecan [Carya illinoinensis (Wangenh.) K. Koch] in orchards is an increasingly common problem. There is uncertainty regarding the primary cause of the problem, as orchard soils have plenty of Ni. The influence of essential micronutrients on the endogenous...

  11. Response of young bearing pecan trees to spring foliar nickel applications

    Science.gov (United States)

    The lower critical leaf concentration for nickel (Ni) has not been fully determined for commercial pecan [Carya illinoinensis (Wang.) K. Koch.] orchards. In a two-year study, foliar Ni was applied to orchard trees in early spring beginning at the parachute stage of leaf development and followed by ...

  12. Iron-induced nickel deficiency in pecan

    Science.gov (United States)

    Economic loss due to nickel (Ni) deficiency can occur in horticultural and agronomic crops. This study assesses impact of excessive iron (Fe) on expression of Ni deficiency in pecan [Carya illinoinensis (Wangenh.) K. Koch]. Field and greenhouse experiments found Ni deficiency to be inducible by ei...

  13. Patterns of Genetic Variation in Woody Plant Species in the Missouri Ozark Forest Ecosystem Project

    Science.gov (United States)

    Victoria L. Sork; Anthony Koop; Marie Ann de la Fuente; Paul Foster; Jay. Raveill

    1997-01-01

    We quantified current patterns of genetic variation of three woody plant species—Carya tomentosa (Juglandaceae), Quercus alba (Fagaceae), and Sassafras albidum (Lauraceae)—distributed throughout the nine Missouri Ozark Forest Ecosystem Project (MOFEP) study sites and evaluated the data in light of the MOFEP...

  14. Efficacy of orchard-applied insecticides against the brown stink bug Euschistus servus (Hemiptera: Pentatomidae) attacking pecan

    Science.gov (United States)

    The polyphagous brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae), is an economic pest of pecan, Carya illinoinensis (Wangenh) K. Koch (Juglandaceae), and other agronomic crops across the southcentral and southeastern U.S.A. Management of this pest in both orchards and row crops i...

  15. Insecticide assays against the brown stink bug feeding on pecan

    Science.gov (United States)

    The brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae), is an economic pest of pecan, Carya illinoinensis (Wangenh) K. Koch (Juglandaceae), and other agronomic crops across the southeastern U.S. Management of this pest is mainly via insecticides. Many commercial products indicate o...

  16. Wing Infrastructure Development Outlook: Programmatic Environmental Assessment

    Science.gov (United States)

    2005-07-01

    live oaks (Quercus ruba), red oaks (Quercus sp.), pecan (Carya sp.), bur oaks (Quercus macrocarpa), mesquite ( Prosopis sp.), Afghan pine (Pinus...which causes shear breaks in water lines. The first phase of replacing the existing rigid cast iron and asbestos cement pipes with resilient plastic

  17. Flavonoids, alkali earth and rare earth elements affect germination of pecan pollen

    Science.gov (United States)

    The factors regulating pecan [Carya illinoinensis (Wangenh.) K. Koch] pollen grain germination on receptive stigmatic flower surfaces in vivo or in vitro in pollen viability assays are poorly understood. While there are many potential regulating factors, there is evidence for involvement of flavonol...

  18. Controlling pecan weevil with beneficial fungi: the impact of fungal species and fertilizer regimes

    Science.gov (United States)

    The pecan weevil, Curculio caryae (Horn), is a key pest of pecan. Prior research indicated the potential for using entomopathogenic fungi to suppress pecan weevil in the soil. We compared the efficacy of two fungal species, Beauveria bassiana (GHA strain) and Metarhizium brunneum (F52), in their a...

  19. Differences in impacts of Hurricane Sandy on freshwater swamps on the Delmarva Peninsula, Mid−Atlantic Coast, USA

    Science.gov (United States)

    Middleton, Beth A.

    2016-01-01

    Hurricane wind and surge may have different influences on the subsequent composition of forests. During Hurricane Sandy, while damaging winds were highest near landfall in New Jersey, inundation occurred along the entire eastern seaboard from Georgia to Maine. In this study, a comparison of damage from salinity intrusion vs. wind/surge was recorded in swamps of the Delmarva Peninsula along the Pocomoke (MD) and Nanticoke (DE) Rivers, south of the most intense wind damage. Hickory Point Cypress Swamp (Hickory) was closest to the Chesapeake Bay and may have been subjected to a salinity surge as evidenced by elevated salinity levels at a gage upstream of this swamp (storm salinity = 13.1 ppt at Nassawango Creek, Snow Hill, Maryland). After Hurricane Sandy, 8% of the standing trees died at Hickory including Acer rubrum, Amelanchier laevis, Ilex spp., and Taxodium distichum. In Plot 2 of Hickory, 25% of the standing trees were dead, and soil salinity levels were the highest recorded in the study. The most important variables related to structural tree damage were soil salinity and proximity to the Atlantic coast as based on Stepwise Regression and NMDS procedures. Wind damage was mostly restricted to broken branches although tipped−up trees were found at Hickory, Whiton and Porter (species: Liquidamabar styraciflua, Pinus taeda, Populus deltoides, Quercus pagoda and Ilex spp.). These trees fell mostly in an east or east−southeast direction (88o−107o) in keeping with the wind direction of Hurricane Sandy on the Delmarva Peninsula. Coastal restoration and management can be informed by the specific differences in hurricane damage to vegetation by salt versus wind.

  20. Are sugarcane leaf-detritus well colonized by aquatic macroinvertebrates? Detritos foliares de cana-de-açúcar são bem colonizados por macroinvertebrados aquáticos?

    Directory of Open Access Journals (Sweden)

    Luciene Aparecida Leite-Rossi

    2012-01-01

    Full Text Available AIM: The aim was to compare the kinetics of decomposition and the colonization of leaf litter of two plant species, the native Talauma ovata (pinha-do-brejo and the exotic Saccharum officinarum (sugarcane, by aquatic macroinvertebrates; METHODS: From each substrate, three recipients of colonization were taken from a stream, and the specimens identified to the lowest taxonomic level on days 7, 15, 34, 44, 61 and 75. The debris was weighed at the beginning and end of the experiment and determined their cell wall fractions; RESULTS: The coefficients of mineralization indicated higher velocity decay of organic matter refractory in T. ovata. There was no difference in taxonomic structure of macroinvertebrates, between the two substrates, but the community exhibited distinct functional feeding groups in the peak of colonization, with a greater number of shredders in T. ovata. The successive states of decomposition of the two plant detritus showed distinct macroinvertebrate densities; CONCLUSIONS: The amount and state of the plant biomass were important factors influencing the density and diversity of the macroinvertebrate fauna throughout the process of organic decomposition.OBJETIVO: O principal objetivo foi comparar a cinética de decomposição e a colonização de detritos de duas espécies de plantas: a nativa Talauma ovata (pinha-do-brejo e a exótica Saccharum officinarum (cana-de-açúcar por macroinvertebrados; MÉTODOS: Para cada substrato, três recipientes de colonização foram retirados de um riacho e os espécimes identificados até o menor nível taxonômico nos dias 7, 15, 34, 44, 61 e 75. Os detritos foram pesados no início e ao final do experimento e determinadas suas frações de parede celular; RESULTADOS: Os coeficientes de mineralização indicaram maior velocidade de decaimento da matéria orgânica refratária nos detritos de T. ovata. Os dois substratos não apresentaram diferenças na estrutura taxonômica da comunidade

  1. Are sugarcane leaf-detritus well colonized by aquatic macroinvertebrates? Detritos foliares de cana-de-açúcar são bem colonizados por macroinvertebrados aquáticos?

    Directory of Open Access Journals (Sweden)

    Luciene Aparecida Leite-Rossi

    2012-09-01

    Full Text Available AIM: The aim was to compare the kinetics of decomposition and the colonization of leaf litter of two plant species, the native Talauma ovata (pinha-do-brejo and the exotic Saccharum officinarum (sugarcane, by aquatic macroinvertebrates; METHODS: From each substrate, three recipients of colonization were taken from a stream, and the specimens identified to the lowest taxonomic level on days 7, 15, 34, 44, 61 and 75. The debris was weighed at the beginning and end of the experiment and determined their cell wall fractions; RESULTS: The coefficients of mineralization indicated higher velocity decay of organic matter refractory in T. ovata. There was no difference in taxonomic structure of macroinvertebrates, between the two substrates, but the community exhibited distinct functional feeding groups in the peak of colonization, with a greater number of shredders in T. ovata. The successive states of decomposition of the two plant detritus showed distinct macroinvertebrate densities; CONCLUSIONS: The amount and state of the plant biomass were important factors influencing the density and diversity of the macroinvertebrate fauna throughout the process of organic decomposition.OBJETIVO: O principal objetivo foi comparar a cinética de decomposição e a colonização de detritos de duas espécies de plantas: a nativa Talauma ovata (pinha-do-brejo e a exótica Saccharum officinarum (cana-de-açúcar por macroinvertebrados; MÉTODOS: Para cada substrato, três recipientes de colonização foram retirados de um riacho e os espécimes identificados até o menor nível taxonômico nos dias 7, 15, 34, 44, 61 e 75. Os detritos foram pesados no início e ao final do experimento e determinadas suas frações de parede celular; RESULTADOS: Os coeficientes de mineralização indicaram maior velocidade de decaimento da matéria orgânica refratária nos detritos de T. ovata. Os dois substratos não apresentaram diferenças na estrutura taxonômica da comunidade

  2. COMPARISON OF VARIOUS NATURAL SUPERDISINTEGRANTS IN THE FORMULATION OF FAST DISSOLVING CARVEDILOL TABLET

    Directory of Open Access Journals (Sweden)

    Vikas Sharma et al

    2012-10-01

    Full Text Available In the present investigation, fast dissolving tablets of Carvedilol were formulated by using various natural superdisintegrant like Plantago ovata, Lepidium sativum, Fenugreek and Guar gum. A Direct compression method was used to prepare fast dissolving tablets containing Carvedilol as a model drug using natural superdisintegrants. Prepared formulations were evaluated for Precompression parameters such as micromeritic properties like angle of repose, %compressibility and Hausner’s ratio. Tablets were also subjected to Postcompression analysis for the parameters such as weight variation, hardness, and friability, in vitro disintegration time, wetting time, drug content and in vitro dissolution study. The results concluded that amongst all formulations, the formulation prepared with mucilage of Plantago ovata showed better disintegrating property as well as the release profile than the other used natural superdisintegrant.

  3. Systematics and biology of the African genus Ferraria (Iridaceae: Irideae

    Directory of Open Access Journals (Sweden)

    P. Goldblatt

    2011-12-01

    Full Text Available Following field and herbarium investigation of the subequatorial African and mainly western southern African Ferraria Burm. ex Mill. (Iridaceae: Iridoideae, a genus of cormous geophytes, we recognize 18 species, eight more than were included in the 1979 account of the genus by M.P. de Vos. One of these, F. ovata, based on Moraea ovata Thunb. (1800, was only discovered to be a species of Ferraria in 2001, and three more are the result of our different view of De Vos’s taxonomy. In tropical Africa, F. glutinosa is recircumscribed to include only mid- to late summer-flowering plants, usually with a single basal leaf and with purple to brown flowers often marked with yellow. A second summer-flowering species, F. candelabrum, includes taller plants with several basal leaves. Spring and early summer-flowering plants lacking foliage leaves and with yellow flowers from central Africa are referred to F. spithamea or F. welwitschii respectively.

  4. Development of Graphene-based novel cathode material in MES system

    DEFF Research Database (Denmark)

    Chen, Leifeng; Aryal, Nabin; Ammam, Fariza

    2014-01-01

    Sporomusa ovata (S.O) typically have a negative outer-surface charge. The graphene oxide (GO) is the acceptor of the electron. If the GO accept electrons from the Sporomusa ovata and the GO can be reduced to graphene. This will lead to in situ construction of a bacteria/graphene network in the cathode.......The graphene (GP) has outstanding electrical conductivity, extremely high specific surface area,mechanical robustness and flexibility, chemical inertness, and biocompatibility. These special properties ofGP can provide excellent opportunity to improve the performance of MES. Gram negative microorganisms like...... analyzed by SEM or AFM. Thanks to the high surface area for graphene, superior conductivity, biocompatibility, the incorporation of the large amount bacteria into the biofilm matrix, and forming multiplexed conductive pathways, so the hybrid biofilm can facilitate electron exchange between bacteria...

  5. Ephemeral wetland communities of Isoëto-Nano-Juncetea class – new data from south-eastern Poland

    Directory of Open Access Journals (Sweden)

    Krawczyk Rafał

    2016-06-01

    Full Text Available Vegetation data (70 relevés of ephemeral wetlands collected in both permanent and temporal water basins were analyzed. Numerical classification of the data revealed two distinct subsets, the first comprised communities of Eleocharition ovatae Philippi 1968 alliance, the second combined communities dominated by Alisma lanceolatum, Isolepis supina or Elatine alsinastrum (Alisma lanceolatum group. Phytocoenoses of Eleocharition ovatae were widely distributed in the study area and developed, most frequently, on exposed bottoms of fishponds. This group could be divided into four types of communities. Patches representing Alisma lanceolatum group were found only in mid-field depressions periodically filled with water and concentrated in Volhynian Upland. In this group, two lower vegetation units were distinguished.

  6. [Gymnophallus rebecqui n. sp. (syn. Parvatrema sp. 1, J. Rebecq, 1964) (Digenea: Gymnophallidae), an intestinal parasite of ducks from Camargue (France)].

    Science.gov (United States)

    Bartoli, P

    1983-01-01

    Gymnophallus rebecqui n. sp. replace Parvatrema sp. 1 J. Rebecq, 1964. Metacercariae are described. They occur free in the extrapallial space of Cerastoderma glaucum and Abra ovata, at the central part of the valves. Pallial epithelium hypertrophy is induced by metacercariae and damages are produced at the inner face of the shell of Abra ovata. Adults have been reared in laboratory hosts (Aythya ferina, A. fuligula, Anas platyrhynchos, Tadorna tadorna and Larus argentatus michaellis). Natural adults have been discovered in the anterior and median gut of Aythya ferina, A. fuligula and Anas clypeata. Adults are described and compared with other related Gymnophallid species. This new species is not a member of Parvatrema but belongs to Gymnophallus genera.

  7. Diferencias en las historias de vida de dos especies de isópodos bopíridos (Isopoda: Epicaridea que parasitan al nape Neotrypaea uncinata (Milne-Edwards, 1837 (Decapoda: Thalassinidea Different life histories of two species of bopyrid isopods (Isopoda, Epicaridea, parasites of the ghost shrimp Neotrypaea uncinata (H. Milne Edwards, 1837 (Decapoda: Thalassinidea

    Directory of Open Access Journals (Sweden)

    GABRIELA MUÑOZ

    2001-12-01

    Full Text Available En ambientes costeros de Concepción, Chile, se han registrado dos especies de isópodos, Ione ovata Shiino, 1964 e Ionella agassizi Bonnier, 1900, parásitos en las cámaras branquiales del nape Neotrypaea uncinata (H. Milne Edwards, 1837. La prevalencia de parasitismo sin embargo, es mucho menor en Ione ovata quien además presenta menor frecuencia de parejas cohabitando una misma branquia, aunque posee una especificidad comparativamente menor que I. agassizi. Esto sugiere que ambas especies poseen historias de vida contrastantes. Para mejorar el entendimiento de las causas de estas diferencias, en este estudio se analizan y comparan algunos rasgos de la historia de vida de los isópodos (fecundidad, tamaño de los huevos, inversión reproductiva, y capacidad de los machos para colonizar napes no parasitados. Ione agassizi tuvo una menor fecundidad, y huevos de mayor tamaño que I. ovata. Sin embargo, no hubo diferencias en la inversión reproductiva entre ambas especies, ni en su relación con el tamaño corporal del isópodo. Los machos de I. ovata poseen mayor habilidad que los de I. agassizi para colonizar nuevos napes no parasitados, ya que pudieron permanecer en nuevos hospedadores y rediferenciarse sexualmente en hembras. Se considera que sería necesario estimar la sobrevivencia durante el tiempo total de vida de estos parásitos para mejorar la interpretación de estos resultadosOn coastal habitats near Concepción city, Chile, there are two isopod species Ione ovata Shiino, 1964, and Ionella agassizi Bonnier, 1900 both occupying the gill chambers of the ghost shrimp Neotrypaea uncinata (H. Milne Edwards, 1837. However, in I. ovata, the prevalence is smaller, there is a low frequency of coupled isopods in the same gill chamber, and is less host specific than I. agassizi. These observations suggest that both isopod species have different life histories. To improve the understanding of the causes of these differences some life history

  8. Negative effects of Phaeocystis globosa on microalgae

    Science.gov (United States)

    Liu, Jiesheng; van Rijssel, Marion; Yang, Weidong; Peng, Xichun; Lü, Songhui; Wang, Yan; Chen, Jufang; Wang, Zhaohui; Qi, Yuzao

    2010-07-01

    The potential allelopathic effects of the microalga, Phaeocystis globosa Scherffel, on three harmful bloom algae, Prorocentrum donghaiense Lu, Chattonella marina (Subrahmanyan) Hara et Chihara and Chattonella ovata Hara et Chihara were studied. The growth of C. marina and C. ovata was markedly reduced when the organisms were co-cultured with P. globosa or cultured in cell-free spent medium. Haemolytic extracts from P. globosa cells in the senescence phase had a similar inhibitory effect on the three harmful bloom algae. However, P. globosa had less influence on the brine shrimp, Artemia salina. These results indicate that P. globosa may have an allelopathic effect on microalgae, which would explain the superior competitive abilities of P. globosa. Because the addition of the haemolytic toxins from P. globosa had similar effects on algae as spent media, these compounds may be involved in the allelopathic action of P. globosa.

  9. Systematics and biology of the African genus Ferraria (Iridaceae: Irideae

    Directory of Open Access Journals (Sweden)

    P. Goldblatt

    2011-12-01

    Full Text Available Following field and herbarium investigation of the subequatorial African and mainly western southern African Ferraria Burm. ex Mill. (Iridaceae: Iridoideae, a genus of cormous geophytes, we recognize 18 species, eight more than were included in the 1979 account of the genus by M.P. de Vos. One of these, F. ovata, based on Moraea ovata Thunb. (1800, was only discovered to be a species of Ferraria in 2001, and three more are the result of our different view of De Vos’s taxonomy. In tropical Africa, F. glutinosa is recircumscribed to include only mid- to late summer-flowering plants, usually with a single basal leaf and with purple to brown flowers often marked with yellow. A second summer-flowering species, F. candelabrum, includes taller plants with several basal leaves. Spring and early summer-flowering plants lacking foliage leaves and with yellow flowers from central Africa are referred to F. spithamea or F. welwitschii respectively.

  10. Ctenophores-invaders and their role in the trophic dynamics of the planktonic community in the coastal regions off the Crimean coasts of the Black Sea (Sevastopol Bay)

    Science.gov (United States)

    Finenko, G. A.; Romanova, Z. A.; Abolmasova, G. I.; Anninsky, B. E.; Pavlovskaya, T. V.; Bat, L.; Kideys, A.

    2006-07-01

    The abundances, biomasses, and population structures of two introduced ctenophore species— Mnemiopsis leidyi and Beroe ovata—were monitored along with mesoplankton in the near-shore waters of the northern Black Sea (Sevastopol Bay and adjacent regions) over a period of four years (2000-2003), after the B. ovata invasion. The annual dynamics of the M. leidyi population were similar in these years: very low abundances and biomass values were observed during the major part of the year (unlike previous years) with a shortterm peak in the summer-early autumn. B. ovata development during the growth in the M. leidyi biomass resulted in a sharp fall in the M. leidyi biomass down to extremely low values. The interannual differences in the populations of both ctenophore species were reflected by their quantitative parameters: the maximum biomass of M. leidyi varied from 790 g/m2 in 2001 to 211-266 g/m2 in other years. The maximum biomass values of B. ovata (38.9 and 32.5 g/m2) were observed in 2001 and 2003, respectively. In 2000-2003, from July to September, during the peak in mnemiopsis development, the population consumed from 1.9 ± 0.4 to 13.4 ± 5.7% of the mesoplankton biomass per day, while in the years of B. ovata absence, these values were as high as 30-40%. For the first time, the grazing rate of microzooplankton by M. leidi larvae was estimated. In August 2003, the maximum daily consumption rate was as great as 23-25% of the microzooplankton biomass. The daily rations of the mnemiopsis larvae on microzooplankton were close or even higher than those on mesoplankton.

  11. Unusual snail species involved in the transmission of Fasciola hepatica in watercress beds in central France

    Directory of Open Access Journals (Sweden)

    Dreyfuss G.

    2002-06-01

    Full Text Available Four freshwater pulmonate species (Lymnaea ovata, L. stagnalis, Physa acuta, Planorbis leucostomawere living in several watercress beds known for their relationships with human cases of fasciolosis, whereas L. truncatula was never found. The aims of these studies were to determine the prevalence of natural infections with Fasciola hepatica in snails and to verify if these species might ensure the full larval development of this trematode (with cercarial shedding] when they were experimentally subjected to F. hepatica only, or to co-infections with an other trematode species. Investigations were so carried out in six snail populations living in watercress beds (including three for P. acuta and in four others originating from three brooks or a pond (as controls. Snails naturally infected with F. hepatica were found in two watercress beds inhabited by L. ovata (prevalence of infection: 1.4 % and P. leucostoma (0.1 %, respectively. The L. ovata from the watercress bed could be infected at a higher size than those from the control population and the prevalence of this infection was greater in the bed population. Similar findings were noted for L. stagnalis. Despite single or dual infections, the results obtained with the four populations of P. acuta were unsuccessful. In contrast, the co-infections of young P. leucostoma with Paramphistomum daubneyi and F. hepatica resulted in the shedding of some F. hepatica cercariae. According to the authors, the occurrence of fasciolosis in these watercress beds would be the consequence of frequent natural encounters between parasite and snails (L. ovata, L. stagnalis, or of co-infections with P. daubneyi and F. hepatica (P. leucostoma. In watercress beds only colonized by P. acuta, a lymnaeid species would have ensured the larval development of F. hepatica but it would have been eliminated by P. acuta, as this last species was known to be invasive and could colonize open drainage ditches on siliceous soil.

  12. Niche Partitioning of Feather Mites within a Seabird Host, Calonectris borealis.

    Directory of Open Access Journals (Sweden)

    Laura M Stefan

    Full Text Available According to classic niche theory, species can coexist in heterogeneous environments by reducing interspecific competition via niche partitioning, e.g. trophic or spatial partitioning. However, support for the role of competition on niche partitioning remains controversial. Here, we tested for spatial and trophic partitioning in feather mites, a diverse and abundant group of arthropods. We focused on the two dominant mite species, Microspalax brevipes and Zachvatkinia ovata, inhabiting flight feathers of the Cory's shearwater, Calonectris borealis. We performed mite counts across and within primary and tail feathers on free-living shearwaters breeding on an oceanic island (Gran Canaria, Canary Islands. We then investigated trophic relationships between the two mite species and the host using stable isotope analyses of carbon and nitrogen on mite tissues and potential host food sources. The distribution of the two mite species showed clear spatial segregation among feathers; M. brevipes showed high preference for the central wing primary feathers, whereas Z. ovata was restricted to the two outermost primaries. Morphological differences between M. brevipes and Z. ovata support an adaptive basis for the spatial segregation of the two mite species. However, the two mites overlap in some central primaries and statistical modeling showed that Z. ovata tends to outcompete M. brevipes. Isotopic analyses indicated similar isotopic values for the two mite species and a strong correlation in carbon signatures between mites inhabiting the same individual host suggesting that diet is mainly based on shared host-associated resources. Among the four candidate tissues examined (blood, feather remains, skin remains and preen gland oil, we conclude that the diet is most likely dominated by preen gland oil, while the contribution of exogenous material to mite diets is less marked. Our results indicate that ongoing competition for space and resources plays a

  13. Niche Partitioning of Feather Mites within a Seabird Host, Calonectris borealis

    Science.gov (United States)

    Stefan, Laura M.; Gómez-Díaz, Elena; Elguero, Eric; Proctor, Heather C.; McCoy, Karen D.; González-Solís, Jacob

    2015-01-01

    According to classic niche theory, species can coexist in heterogeneous environments by reducing interspecific competition via niche partitioning, e.g. trophic or spatial partitioning. However, support for the role of competition on niche partitioning remains controversial. Here, we tested for spatial and trophic partitioning in feather mites, a diverse and abundant group of arthropods. We focused on the two dominant mite species, Microspalax brevipes and Zachvatkinia ovata, inhabiting flight feathers of the Cory’s shearwater, Calonectris borealis. We performed mite counts across and within primary and tail feathers on free-living shearwaters breeding on an oceanic island (Gran Canaria, Canary Islands). We then investigated trophic relationships between the two mite species and the host using stable isotope analyses of carbon and nitrogen on mite tissues and potential host food sources. The distribution of the two mite species showed clear spatial segregation among feathers; M. brevipes showed high preference for the central wing primary feathers, whereas Z. ovata was restricted to the two outermost primaries. Morphological differences between M. brevipes and Z. ovata support an adaptive basis for the spatial segregation of the two mite species. However, the two mites overlap in some central primaries and statistical modeling showed that Z. ovata tends to outcompete M. brevipes. Isotopic analyses indicated similar isotopic values for the two mite species and a strong correlation in carbon signatures between mites inhabiting the same individual host suggesting that diet is mainly based on shared host-associated resources. Among the four candidate tissues examined (blood, feather remains, skin remains and preen gland oil), we conclude that the diet is most likely dominated by preen gland oil, while the contribution of exogenous material to mite diets is less marked. Our results indicate that ongoing competition for space and resources plays a central role in

  14. Environmental Assessment: Invasive Pest Plant Management

    Science.gov (United States)

    2005-01-01

    region of the EHR. “Barrens” most often refers to grasslands similar to the Midwestern tallgrass prairie but may also be used to describe openings with... prairies in the midwestern United States and also include many wildflower and bird species associated with that region. According to the IEMP (Call...The plant species found at Arnold AFB are those common to the EHR Ecological Association. Oak-hickory forest and a mosaic of bluestem prairie and

  15. Environmental Impact Study of the Northern Section of the Upper Mississippi River, Upper and Lower St. Anthony Falls Pool.

    Science.gov (United States)

    1973-11-01

    Icress Rorippa obtusa Obtuse yellow cress Unidentified sp. P I CUCURBITACEAE Sicyos angulatus Bur-cucumber1 CYPERACEAE Carex aenca Sedge Carex annectens...Bitter- White oak Little bluestem Reed-canary- Sedges flackbcrry nut White pine Nodding grama grass Milkweed Green ash hickory Sugar maple Northern Rice...Aster Cottonwood Hackbcrry Paper birch dropseed cutgrass Blue-joint Silver maple Ironwood Ironwood Hairy grama River sedge grass Slippery Bur oak Red

  16. Stockton Lake Survey and Assessment. National Register Assessment of Prehistoric Archeological Sites 23DA407 and 23DA408 and Historic Properties Survey in the Stockton Lake Project, Cedar and Dade Counties, Missouri

    Science.gov (United States)

    1993-01-01

    conducted at the Stockton, Truman and Pomme de Terre reservoirs, principal investigators generally agree that the culture history and chronology of the...1992 Archaeological Survey at Pomme de Terre and Stockton Lakes: Cedar, Dade, Hickory and Polk Counties, Missouri. Report of Investigations, No. 33...Conservation Program, Missouri Department of Natural Resources. Haynes, C. Vance 1976 Late Quaternary Geology of the Lower Pomme de Terre Valley. In

  17. Ecological Survey Data for Environmental Considerations on the Trinity River and Tributaries, Texas.

    Science.gov (United States)

    1973-07-01

    walnut 11[jugans nigra and sweetguu. Blact- hickory was less frequent. Two- t~iirds of the wdy down the siop, eastern redbud gj~jis c~ndaiL winged elm...b. Continued. Connon name Scientific name *Blac’k oak Quercus velutina Lamn. Black walnut Juglans nixra L. Black willow Salix nigra March. Blackjack...Acer rubrum L. Red mulberry Morus rubra, L. Red-berried moonseed Cocculus carolinus (L.) DC. Redbud Cercis canadensis L. Redroot Ceanothus herbaceus

  18. Public Water Supply, Red River Parish, Louisiana.

    Science.gov (United States)

    1982-04-01

    nigra ) willow oak (Quercus phellos), sweet gum (Liquidambar styraciflua), and elms (Ulmus spp.). Flowering dogwood (Cornus florida), silverbell...and consists of loblolly pine (Pinus taeda), slash pine (Pinus elliottii), water oak (Quercus nigra ), post oak (Quercus stellata), mockernut hickory...Patridge Berry C,D,E 9 8 Mnium spp. Moss D 1 Morus rubra Red Mulberry D,E 2 Myrica cerifera Wax Myrtle C,E 97 49 Nyssa aquatica Tupelogum D,E 4 17 3 Nyssa

  19. Hydrologic, water-quality, and meteorologic data from selected sites in the Upper Catawba River Basin, North Carolina, January 1993 through March 1994

    Science.gov (United States)

    Jaynes, M.L.

    1994-01-01

    Hydrologic, water-quality, and meteorologic data were collected from January 1993 through March 1994 as part of a water-quality investigation of the Upper Catawba River Basin, North Carolina. Specific objectives of the investigation were to characterize the water quality of Rhodhiss Lake, Lake Hickory, and three tributary streams, and to calibrate hydrodynamic water-quality models for the two reservoirs. Sampling locations included 11 sites in Rhodhiss Lake, 14 sites in Lake Hickory, and 3 tributary sites. Tributary sites were located at Lower Creek upstream from Rhodhiss Lake and at Upper Little River and Middle Little River upstream from Lake Hickory. During 21 sampling visits, specific conductance, pH, water temperature, dissolved-oxygen concentration, and water transparency were measured at all sampling locations. Water samples were collected for analysis of biochemical oxygen demand, fecal coliform bacteria, hardness, alkalinity, total and volatile suspended solids, suspended sediment, nutrients, total organic carbon, chlorophyll, iron, calcium, and magnesium from three sites in each reservoir and from the three tributary sites. Chemical and particle-size analyses of bottom material from Rhodhiss Lake and Lake Hickory were performed once during the study. At selected locations, automated instruments recorded water level, streamflow, water temperature, solar radiation, and air temperature at 15-minute intervals throughout the study. Hydrologic data presented in the report include monthly water-level statistics and daily mean values of discharge. Diagrams, tables, and statistical summaries of water-quality data are provided. Meteorologic data in the report include monthly precipitation, and daily mean values of solar radiation and air temperature.

  20. Environmental Assessment, Glide Slope/Clear Zone Obstructions, Wright-Patterson Air Force Base, Ohio

    Science.gov (United States)

    2013-06-01

    shrubs in upland forests include sugar maple , white oak, red oak, red maple , shagbark hickory, white ash, blue ash, red elm, redbud, blacklocust, amur...the region. Long-term adverse impacts to threatened and endangered species would be minor due to the abundance of forest cover within a 0.6-mi le...would include measures such as planting low-growing shrubs in treatment areas in order to prevent re- forestation . This plan would ensure that this

  1. Environmental Assessment for the Construction and Operation of a Battalion Headquarters for the U.S. Army Priority Air Transport at Joint Base Andrews-Naval Air Facility Washington, Prince George’s County, Maryland

    Science.gov (United States)

    2012-12-01

    forest , mixed hardwood/pine forest , oak forest , oak/hickory forest , oak/pine forest , pine forest , red maple swamp, and shallow emergent marsh. The plants...Permit from MDE. Wetlands identified on Andrews include palustrine, forested wetlands and palustrine emergent wetlands, both of which are both primarily...historic sites: 77-00 !- Forest Grove Methodist Church and Cemetery (Chapel 2). and 77-014-Belle Chance and Cemetery. Neither of these properties will be

  2. Environmental Assessment, Buildings 4133 and Building 4143, Historic Building Demolitions, Barksdale Air Foce Base, Louisiana

    Science.gov (United States)

    2013-06-01

    communities for this region include the oak-gum-cypress bottomlands, in which most wetlands occur, and the pine-oak-hickory- maple forest , which dominates...areas, forest , safety clearance/security areas, utility easements Water 2,317 11.0 Ponds, lakes, streams, forest wetlands Total 21,802 100 BAFB Total...comprises 21,802 acres of natural vegetation, 17,301 acres of which is dominated by forested communities. Bottomland hardwoods make up approximately

  3. Environmental Assessment Building 5745, Historical Building Demolition, Barksdale Air Force Base, Louisiana

    Science.gov (United States)

    2012-12-01

    wetlands occur, and the pine-oak-hickory- maple forest , which dominates the uplands. Seven plants listed on the state rare list and ten uncommon...parks/picnic areas, FamCamp, pools, golf course Open Space 16,450 75.0 Conservation areas, forest , safety clearance/security areas, utility...easements Water 2,317 11.0 Ponds, lakes, streams, forest wetlands Total 21,802 100 BAFB Total Area Source: Barksdale Air Force Base General Plan

  4. The Banister Allen Plantation (38AB102) and Thomas B. Clinkscales Farm: (38AB221) Data Recovery in the Richard B. Russell Multiple Resource Area Abbeville County, South Carolina.

    Science.gov (United States)

    1983-01-01

    than with Structure A. In addition to the glass and bottle fragments noted above, pecan and hickory nut shells, ": the fluted clay pipe bowl fragment...variety of artifact classes suggestive of secondary deposition some distance away from the immediate habitation area of Structure B: a button, nut ...increased its representation in the archaeological record is immaterial, since the Clinkscales house was abandoned, and if it ever had glazed windows

  5. Kansas forests 2005

    Science.gov (United States)

    W. Keith Moser; Mark H. Hansen; Robert L. Atchison; Gary J. Brand; Brett J. Butler; Susan J. Crocker; Dacia M. Meneguzzo; Mark D. Nelson; Charles H. Perry; William H. IV Reading; Barry T. Wilson; Christopher W. Woodall

    2008-01-01

    The first completed annual inventory of Kansas forests reports 2.1 million acres of forest land, roughly 4 percent of the total land area in the State. Softwood forests account for nearly 5 percent of the total timberland area. Oak/hickory forest types make up 56 percent of the total hardwood forest land area. Elm/ash/cottonwood accounts for more than 30 percent of the...

  6. Kansas' Forests 2010

    Science.gov (United States)

    W. Keith Moser; Mark H. Hansen; Robert L. Atchison; Brett J. Butler; Susan J. Crocker; Grant Domke; Cassandra M. Kurtz; Andrew Lister; Patrick D. Miles; Mark D. Nelson; Ronald J. Piva; Christopher W. Woodall

    2013-01-01

    The second completed annual inventory of Kansas' forests reports 2.4 million acres of forest land, roughly 5 percent of the total land area in the State. Softwood forests account for 4.4 percent of the total timberland area. Oak/hickory forest types make up 55 percent of the total hardwood forest land area. Elm/ash/cottonwood accounts for more than 32 percent of...

  7. Geomorphic Investigation of Shreveport to Daingerfield Navigation Project

    Science.gov (United States)

    1993-12-01

    a stream; geo- morphologically , it is a landform composed primarily of unconsolidated depositional material derived from sediments being transported...whenever possible. If the grain could not be differentiated from similar genera based on morphology , it was identified to the family level. For one taxon... Poaceae (grass) family, Cary& (pecan and hickory), and Lg (sweet gum). These pollen taxa represent plants common to the indigenous floral communities of

  8. Environmental Assessment: Proposed Lakeview Marina Site Boat Ramp and Access, Saylorville Lake, Polk County, Iowa

    Science.gov (United States)

    1988-08-01

    cover of yellow sweet clover, red clover, and a small amount of brome grass ( Bromus sp.). Trees within the upper zone include sapling and intermediate...clover, brome grass , and switchgrass ( Paspalum virgatum) with small amounts of goldenrod (Solidago sp.) poison ivy, milkweed (Amaranthus sp.), thistle...amount of brome grass ( Bromus sp.). Trees within the upper zone include sapling and intermediate size shagbark hickory, sumac (Rhus glabra), and white

  9. Kentucky's forests, 2004

    Science.gov (United States)

    Jeffery A. Turner; Christopher M. Oswalt; James L. Chamberlain; Roger C. Conner; Tony G. Johnson; Sonja N. Oswalt; KaDonna C. Randolph

    2008-01-01

    Forest land area in the Commonwealth of Kentucky amounted to 11.97 million acres, including 11.6 million acres of timberland. Over 110 different species, mostly hardwoods, account for an estimated 21.2 billion cubic feet of all live tree volume. Hardwood forest types occupy 85 percent of Kentucky’s timberland, and oak-hickory is the dominant forest-type group...

  10. Pennsylvania forests 2014

    Science.gov (United States)

    Thomas A. Albright; William H. McWilliams; Richard H. Widmann; Brett J. Butler; Susan J. Crocker; Cassandra M. Kurtz; Shawn Lehman; Tonya W. Lister; Patrick D. Miles; Randall S. Morin; Rachel Riemann; James E. Smith

    2017-01-01

    This report summarizes the third cycle of annualized inventory of Pennsylvania with field data collected from 2009 through 2014. Pennsylvania has 16.9 million acres of forest land dominated by sawtimber stands of oak/hickory and maple/beech/birch forest-type groups. Volumes continue to increase as the forests age with an average of 2,244 cubic feet per acre on...

  11. Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (17th) Held in Clearwater Beach, Florida on January 31 - February 2, 1990

    Science.gov (United States)

    1992-10-12

    University of Minnesota 331 Newman Springs Rd. 200 Union St. SE Redbank, NJ Minneapolis, MN 55455 Randall M. Feenstra Dr. Larry R. Cooper IBM Research...303) 491-7301 Gretchen Wiltshire 2873 Hickory Ln. Largo, FL 34640 Horst R. Wittmann US Air Force Bolling AFB Washington DC, 20332 Donald J. Wolford ...the generous financial support provided by the Air Force Office for Scientific Research (Horst R. Wittmann) and the Office of Naval Research ( Larry R

  12. Ball clay

    Science.gov (United States)

    Virta, R.L.

    2011-01-01

    The article discusses the latest developments in the global ball clay mining industry, particularly in the U.S., as of June 2011. It cites several firms that are involved in ball clay mining in the U.S., including HC Spins Clay Co. Inc., the Imerys Group and Old Hickory Clay Co. Among the products made from ball clay are ceramic tiles, sanitaryware, as well as fillers, extenders and binders.

  13. Mississippi River Navigation System. Environmental Evaluations of Proposed Mooring Facilities.

    Science.gov (United States)

    1982-03-01

    crayfish, oligochetes, nematodes , snails, clams, mussels and tubifex worms. Fish commonly found in the Kentucky River and tributaries are carp, drum...with ash, poplar, tulip tree, sugar maple, and pawpaw as associate species. The floodplain portions of the basin include southern "swamp" species...such as oak, hickory, ash, poplar, tulip tree, sugar maple and associated species. Understories include rhododendron, laurel, dogwood and wild cherry

  14. The Inhibitory Mechanisms Study of 5,6,4′-Trihydroxy-7,3′-Dimethoxyflavone against the LPS-Induced Macrophage Inflammatory Responses through the Antioxidant Ability

    Directory of Open Access Journals (Sweden)

    Shih-Hao Wang

    2016-01-01

    Full Text Available The whole plant of Anisomeles ovata has been widely used in Taiwan for treating inflammation-related skin and liver diseases, however, the detailed pharmacology mechanisms have yet to be elucidated. In the present study, one of the major components, 5,6,4′-trihydroxy-7,3′-dimethoxyflavone (5-TDMF, was purified from a methanol extract of Anisomeles ovata. A pharmacological study of this compound suggests that 5-TDMF possesses potent free radical scavenging activity both in vitro and ex vivo. Furthermore, 5-TDMF reduces nitric oxide and pro-inflammatory cytokine production in LPC-treated RAW 264.7 cells through the attenuation of nitric oxide synthase and cyclooxygenase-2. Additional experiments suggest that of 5-TDMF interferes with nuclear factor-κB translocation and mitogen-activated protein kinase pathways. These results identify 5-TDMF as an anti-oxidant and anti-inflammatory compound, explain the pharmacologic function of Anisomeles ovata and suggest its great potential as a new anti-inflammatory remedy.

  15. Are sugarcane leaf-detritus well colonized by aquatic macroinvertebrates?

    Directory of Open Access Journals (Sweden)

    Luciene Aparecida Leite-Rossi

    Full Text Available AIM: The aim was to compare the kinetics of decomposition and the colonization of leaf litter of two plant species, the native Talauma ovata (pinha-do-brejo and the exotic Saccharum officinarum (sugarcane, by aquatic macroinvertebrates; METHODS: From each substrate, three recipients of colonization were taken from a stream, and the specimens identified to the lowest taxonomic level on days 7, 15, 34, 44, 61 and 75. The debris was weighed at the beginning and end of the experiment and determined their cell wall fractions; RESULTS: The coefficients of mineralization indicated higher velocity decay of organic matter refractory in T. ovata. There was no difference in taxonomic structure of macroinvertebrates, between the two substrates, but the community exhibited distinct functional feeding groups in the peak of colonization, with a greater number of shredders in T. ovata. The successive states of decomposition of the two plant detritus showed distinct macroinvertebrate densities; CONCLUSIONS: The amount and state of the plant biomass were important factors influencing the density and diversity of the macroinvertebrate fauna throughout the process of organic decomposition.

  16. Aegilops-Secale amphiploids: chromosome categorisation, pollen viability and identification of fungal disease resistance genes.

    Science.gov (United States)

    Kwiatek, M; Błaszczyk, L; Wiśniewska, H; Apolinarska, B

    2012-02-01

    The aim of this study was to assess the potential breeding value of goatgrass-rye amphiploids, which we are using as a "bridge" in a transfer of Aegilops chromatin (containing, e.g. leaf rust resistance genes) into triticale. We analysed the chromosomal constitution (by genomic in situ hybridisation, GISH), fertility (by pollen viability tests) and the presence of leaf rust and eyespot resistance genes (by molecular and endopeptidase assays) in a collection of 6× and 4× amphiploids originating from crosses between five Aegilops species and Secale cereale. In the five hexaploid amphiploids Aegilops kotschyi × Secale cereale (genome UUSSRR), Ae. variabilis × S. cereale (UUSSRR), Ae. biuncialis × S. cereale (UUMMRR; two lines) and Ae. ovata × S. cereale (UUMMRR), 28 Aegilops chromosomes were recognised, while in the Ae. tauschii × S. cereale amphiploid (4×; DDRR), only 14 such chromosomes were identified. In the materials, the number of rye chromosomes varied from 14 to 16. In one line of Ae. ovata × S. cereale, the U-R translocation was found. Pollen viability varied from 24.4 to 75.4%. The leaf rust resistance genes Lr22, Lr39 and Lr41 were identified in Ae. tauschii and the 4× amphiploid Ae. tauschii × S. cereale. For the first time, the leaf rust resistance gene Lr37 was found in Ae. kotschyi, Ae. ovata, Ae. biuncialis and amphiploids derived from those parental species. No eyespot resistance gene Pch1 was found in the amphiploids.

  17. A contribution to the knowledge of the pteridosperm genera Pseudomariopteris Danzé-Corsin nov. emend. and Helenopteris nov. gen.

    Science.gov (United States)

    Krings; Kerp

    2000-09-01

    The macromorphology and epidermal anatomy of three Late Carboniferous-Early Permian pteridosperm species, conventionally assigned to the form-genus Pseudomariopteris Danzé-Corsin, are described from the Stephanian of the Blanzy-Montceau Basin (Central France). The generic diagnosis of Pseudomariopteris is emended, and P. busquetii is designated as the type species of the genus. The combination P. cordato-ovata (Weiss) Gillespie et al. is validated to replace the illegitimate name P. ribeyronii (Zeiller) Danzé-Corsin. The species diagnoses of P. busquetii and P. cordato-ovata are emended. On the basis of its epidermal anatomy, P. paleaui, another species orininally described from Central France, is transferred to the newly established genus Helenopteris Krings et Kerp, and the new combination Helenopteris paleaui is introduced. Lectotypes of P. busquetii and H. paleaui are selected. In addition, specimens from other basins are (re-)examined and illustrated. Seeds attached to a P. busquetii specimen suggest a callistophytalean relationship for Pseudomariopteris. Compression fossils and cuticles of Pseudomariopteris and Helenopteris are interpreted in terms of palaeoecology: Pseudomariopteris busquetii and P. cordato-ovata had climbing/scrambling growth habits; specialized climber hooks can be demonstrated for both species, either in compression or in cuticular preservation. Although the growth habit of H. paleaui is not yet entirely clear, the size of its fronds suggests that this taxon most probably was also a scrambler/climber. Finally, based on epidermal features, a tentative reconstruction of stages of the pinnule ontogeny of H. paleaui is provided.

  18. Effect of Water Stress on the Growth of Pecan%水分胁迫对美国山核桃苗木生长的影响

    Institute of Scientific and Technical Information of China (English)

    常君; 姚小华; 杨水平; 王开良

    2009-01-01

    美国山核桃(Carya illinoensis(Wangenh.)K.Koch.)又名薄壳山核桃、长山核桃,属胡桃科(Juglandaceae)山核桃属(Carya Nutt.)。原产北美,是世界著名干果之一,也是优良的果材兼用树种。美国山核桃继油茶(Camellia oleifera Abel.)之后,逐渐成为江浙一带的主要经济树种。但是在育苗过程中,苗木经常会遭受到各种环境胁迫,特别是夏季的高温和干旱胁迫,对苗木生长造成严重影响。

  19. Archaeological Investigation at El Dorado Lake, Butler County, Kansas. Phase III.

    Science.gov (United States)

    1982-01-01

    Anthropology, University of Michigan, No. 35. 1973 Le Malpas Rockshelter: A Study of Late Paleolithic Technology in its Environmental Setting. University of...either through trade or growing their own crops. The nuts of Carya spp., Juglans nigra, and Quercus spp. were pro- bably part of the diet . In addition...bones, and charred nut remains are suggestive of hunting, gathering, and food processing activities. The diet was composed, in part, of deer, fish

  20. A Cultural Resources Literature Search of the Bayou Du Chien Drainage Project Area in Fulton, Graves, and Hickman Counties, Kentucky

    Science.gov (United States)

    1985-10-10

    tulipfera sweetgum Liquididambar styraciflua cucumber tree Magnolia acuminata mulberry Morus rubla sour gum Nyssa syTvatica hophornbeam Ostrya virginiana...tuliptree -•i:Todendron tulipfera mulberry Morus rubla sour gum Nyssa spp. white oak Qiecus alba southern red oak Quercus falTcata blackjack oak Quercus...Acer negundo forests valleys red maple Acer rubrum silver maple Aer saccarinum river birch B-i-f1a nigra pecan Carya pecan smooth hackberry Celtis

  1. 推荐一个好树种——薄壳山核桃

    Institute of Scientific and Technical Information of China (English)

    安徽省造林经营总站; 安徽省林业厅办公室

    2010-01-01

    @@ 薄壳山核桃,学名Carya illinoensis K.koch,又名长山核桃,或美国山核桃、美国薄壳山核桃,是胡桃科山核桃属落叶乔木,是一个用途广、受益期长、经济价值高、社会效益和生态效益明显的优良经济树种.

  2. Significance Assessment of Site 16SC61, Luling Revetment, Mississippi River M-116.7-R

    Science.gov (United States)

    1993-03-01

    laevigata ), sweetgum (Liquidambar styaciflua), pecan (Carya i11inoiensis), magnolia (Magnolia spp.), and possibly some conifers (Bahr et al. 1983:82). These...Quercus nigra). Subdominants include the sweet gum (Liquidambar stryaciflua), hackberry (Celtis laevigata ), and live oak (Quercus virginiana). Other...nuttallil). The most common shrub species are palmetto (Sabal minor) and green haw ( Crataegus viridis), but thickets of possum-haw (Zlex decidua) also

  3. Cultural Resources Survey of the Mississippi River Gulf Outlet Dredged Material Disposal Areas, St. Bernard Parish, Louisiana

    Science.gov (United States)

    1993-05-15

    Celtis laevigata ), sweetgum (Liquidambar styaciflua), pecan (Carya illinoiensis), magnolia (Magnolia app.), and various pines (Bahr et al. 1983:82... laevigata ), and live oak (Quercus virginiana). Other forest species include the box-elder (Acer negundo), honey-locust (Gleditsia triacanthos...American elm (Ulmus americana) and the Nuttall oak (Quercus nuttallii). The most common shrub species were palmetto (Sabal minor) and green haw ( Crataegus

  4. A Systems Evaluation of the Environmental Impact of the Aubrey Reservoir Project on Elm Fork of the Trinity River in North Texas.

    Science.gov (United States)

    1972-06-01

    viridis 5 3 1 Morus rubra 13 1 Ulmus americana 2 2 Maclura pomifera 2 Cercis canadensis 6 Acer negundo 1 1 Carya illinoensis 1 Ulmus alata 9 Ulmus rubra... Carya illinoensis 4.6 0 0.0 0.1 Ulmus alata 0.4 0.4 13.6 0 0.0 0.4 Ulmus rubra 0.3 0.4 4.6 0 0.0 0.1 q .4 228 Y I Table 17. The species of trees found...viridis 0.3 1.0 13.6 7.2 0.8 1.1 Cercis canadensis 0.1 0.3 9.1 4.4 0.5 0.4 Ulmus rubra 0.1 0.3 4.6 3.2 0.4 0.4 Carya illinoensis 0.2 4.6 7.5 0.9 0.2 229

  5. Storage quality in different brines of pickled capers (Capparis spp.

    Directory of Open Access Journals (Sweden)

    Özcan, Musa

    1999-08-01

    Full Text Available Middle sized buds of Capparis spinosa L. var. spinosa and Capparis ovata Desf. var. canescens (Coss. Heywood collected from wild plants were pickled for two months. The buds after the fermentation were processed in 10% and 20% brines. Storage stability of the fermented capers was determined by physical, chemical and microbiological analysis at certain interval in 10 and 20% old or fresh brines 180 days. Storaged in 10% and 20% old or fresh brines for 180 days of pickled buds of both species maintained the product quality in all samples. Acidity was higher in old brine during storage. Lactic acid bacteria (LAB growth was observed only in 10% fresh brine, it decreased from initial and 30 days at C. ovata and C. spinosa, respectively. C. spinosa, compared with C. ovata was desirable due to low sediment and more firm texture. During storage of buds in fresh brines, sediment and off-flavour were not observed for both species. Pickled products can be stored in fresh brine long-term containing at least 10% salt concentration.

    Se encurtieron durante dos meses botones florales de tamaño intermedio de Capparis spinosa L. var. spinosa y Capparis ovata Desf. var. canescens (Coss recogidos de plantas silvestres. Las alcaparras después de la fermentación se conservaron en salmueras del 10% y 20%. Las alcaparras fermentadas fueron mantenidas durante 180 días en salmueras usadas o recién preparadas (frescas del 10 y 20%, determinándose a intervalos la estabilidad durante la conservación por análisis físicos, químicos y microbiológicos. La calidad del producto se mantuvo en todas las muestras de alcaparras fermentadas durante los 180 días, tanto en 10% como en 20% y en salmueras usadas o frescas. La acidez durante la conservación fue mayor en salmueras usadas. El crecimiento de bacterias del ácido láctico se observó sólo en salmueras frescas del 10

  6. Genetic and toxinological characterization of North Atlantic strains of the dinoflagellate Ostreopsis and allelopathic interactions with toxic and non-toxic species from the genera Prorocentrum, Coolia and Gambierdiscus.

    Science.gov (United States)

    García-Portela, María; Riobó, Pilar; Franco, José Mariano; Bañuelos, Rosa Mª; Rodríguez, Francisco

    2016-12-01

    The genus Ostreopsis includes several toxic species that can develop blooms in benthic ecosystems, with potential harmful consequences for human health and marine invertebrates. Despite of this, little is known about the allelopathic interactions between these organisms and other co-occurring microalgae that exploit similar spatial and nutrient resources in benthic ecosystems. The aim of this study was to follow these interactions in cultures of two Ostreopsis ribotypes with different toxin profiles (O. cf. ovata contained ovatoxins-a, b, c and e, while only ovatoxin-d was found in O .sp. "Lanzarote-type"), mixed with species of three benthic dinoflagellate genera (Coolia, Prorocentrum and Gambierdiscus), isolated from the same area (North East Atlantic, Canary Islands). In a first experiment, the potential allelopathic effects on growth rates were followed, in mixed cultures of Coolia monotis (a non toxic species) exposed to the clarified medium and to cells of O. sp."Lanzarote-type" and O. cf. ovata. Growth delayed in C. monotis was observed specially in clarified medium, while the O. sp. "Lanzarote-type" strain attained much lower densities in mixed cultures. In a second experiment, we examined the potential effects of clarified media from O. sp."Lanzarote-type" and O. cf. ovata on the adherence capacity in two toxic species (Prorocentrum hoffmannianum and Gambierdiscus excentricus). Contrasting effects were found: a significant increase of adherence capacity in P. hoffmannianum vs attachment decline in G. excentricus, that experienced also severe deleterious effects (cell lysis). Our results suggest the existence of weak to moderate allelopathic interactions between the studied organisms, although the outcome is dependent on the species involved.

  7. Formulation and evaluation of orally disintegrating tablet of Rizatriptan using natural superdisintegrant

    Directory of Open Access Journals (Sweden)

    Tabbakhian Majid

    2014-01-01

    Full Text Available Introduction: Rizatriptan benzoate is a potent and selective 5-HT1B/1D receptor agonist and is effective for the treatment of acute migraine. Difficulty in swallowing is common among all age groups, especially elderly and pediatrics. Orally disintegrating tablets may constitute an innovative dosage form that overcome the problem of swallowing and provides a quick onset of action. This study was aimed to formulate and evaluate an Orally Disintegrating Tablet (ODT containing Rizatriptan while using semi-synthetic and natural superdisintegrants. Methods: Orodispersible tablets were prepared by direct compression using natural superdisntegrant (Plantago ovata mucilage and semi-synthetic superdisntegrant (crospovidone. The prepared tablets were evaluated for hardness, friability, thickness, drug content uniformity, water absorption and wetting time. A 32 factorial design was used to investigate the effect of independent variables (amount of crospovidone and Plantago ovata mucilage on dependent variables [disintegration time, wetting time and Q5 (cumulative amount of drug release after 5 minutes]. A counter plot was also presented to graphically represent the effect of independent variable on the disintegration time, wetting time and Q5. The check point batch was also prepared to prove the validity of the evolved mathematical model. The systematic formulation approach helped in understanding the effect of formulation processing variable. Results: According to the results of optimized batches, the best concentration of superdisintegrant were as follows: 9.4 mg Psyllium mucilage and 8.32 mg crospovidone gave rapid disintegration in 35sec and showed 99% drug release within 5 minutes. Conclusion: Plantago ovata mucilage, a natural superdisintegrant, gives a rapid disintegration and high release when used with synthetic superdisntegrant in formulation of orally disintegrating tablet of Rizatriptan.

  8. A review of the efficacy of traditional Iranian medicine for inflammatory bowel disease.

    Science.gov (United States)

    Rahimi, Roja; Shams-Ardekani, Mohammad Reza; Abdollahi, Mohammad

    2010-09-28

    The etiology of inflammatory bowel disease (IBD) is not yet known, but many factors such as defects in the immune system, oxidative stress, microbial content in the gastrointestinal tract, nuclear factor (NF)-κB, nitric oxide (NO), cyclooxygenase-2 (Cox-2), and leukotriene B4 (LB4) are thought to play a role in its pathogenesis. In traditional Iranian medicine (TIM), several medicinal plants are thought to be effective for the treatment of IBD. In this study, information on all of these remedies were derived from all available old sources such as documents or notes and books and were added to the information derived from modern medical databases covering all in vitro, in vivo and clinical trials. For some of these plants, only one or two mechanisms of action have been found such as in Cassia fistula, Lepidium sativum, and Bunium persicum. However, for some plants various mechanisms of action are known. For example, Commiphora mukul is effective in IBD due to its immunomodulatory, antioxidant, and antibacterial properties and it decreases NF-κB, NO and Cox-2. Another herb, Plantago ovata, has immunomodulatory, antioxidant, anti-inflammatory and wound healing activities and decreases NO and LB4. Considering the mechanisms of action of these plants, the combination of some of them may be useful because of their many mechanisms of action such as Pistacia lentiscus, Bunium persicum, Solanum nigrum, Plantago ovata, Boswellia, Solanum nigrum, Plantago ovata and Commiphora mukul. For some of the herbal products used in TIM such as oleogum resin from Commiphora myrrha, seeds of Ocimum basilicum, seeds of Linum usitatissimum, gum resin of Dracaena cinnabari, seeds of Plantago major, seeds of Lallementia royleana, and seeds of Allium porrum, there is no or not enough studies to confirm their benefits in IBD. It is suggested that an evaluation of the effects of these plants on different aspects of IBD should be performed.

  9. [Nature of cancer explored from the perspective of the functional evolution of proto-oncogenes].

    Science.gov (United States)

    Watari, Akihiro

    2012-01-01

    The products of proto-oncogene play critical roles in the development or maintenance of multicellular societies in animals via strict regulatory systems. When these regulatory systems are disrupted, proto-oncogenes can become oncogenes, and thereby induce cell transformation and carcinogenesis. To understand the molecular basis for development of the regulatory system of proto-oncogenes during evolution, we screened for ancestral proto-oncogenes from the unicellular choanoflagellate Monosiga ovata (M. ovata) by monitoring their transforming ability in mammalian cells; consequently, we isolated a Pak gene ortholog, which encodes a serine/threonine kinase as a 'primitive oncogene'. We also cloned Pak orthologs from fungi and the multicellular sponge Ephydatia fluviatilis, and compared their regulatory features with that of M. ovata Pak (MoPak). MoPak is constitutively active and induces cell transformation in mammalian cells. In contrast, Pak orthologs from multicellular animals are strictly regulated. Analyses of Pak mutants revealed that structural alterations in the auto-inhibitory domain (AID) are responsible for the enhanced kinase activity and the oncogenic activity of MoPak. Furthermore, we show that Rho family GTPases-mediated regulatory system of Pak kinase is conserved throughout the evolution from unicellular to multicellular animals, but the MoPak is more sensitive to the Rho family GTPases-mediated activation than multicellular Pak. These results show that maturation of AID function was required for the development of the strict regulatory system of the Pak proto-oncogene, and support the potential link between the development of the regulatory system of proto-oncogenes and the evolution of multicellularity. Further analysis of oncogenic functions of proto-oncogene orthologs in the unicellular genes would provide some insights into the mechanisms of the destruction of multicellular society in cancer.

  10. Mathematical model of the growth of a mollusk affected by a toxicant and by temperature fluctuations

    Energy Technology Data Exchange (ETDEWEB)

    Kurchenko, T.S.; Burtnaya, I.L.

    1979-01-01

    An attempt is made to model the effect of a gamma isomer of hexachloran (lindane) and of temperature fluctuations on the growth of bivalves. The model is based on an experimental study of the effect of the toxicant on Radix ovata and Viviparus viviparus, and also on the Putter-Bertalanffy-Vinberg models and the model of Zotin. Quite good agreements has been obtained between calculated and experimental data, and growth curves have been constructed for the weight increase of the animals when exposed to lindane concentrations not tested in the experiment.

  11. Dietary effects on cardiovascular disease risk biomarkers

    OpenAIRE

    Valls Zamora, Rosa Maria

    2009-01-01

    La tesis consta de 4 proyectos: dos estudios de intervención, aleatorizados, paralelos y controlados, uno sobre los efectos de productos del cacao y otro sobre los de fibra soluble, Plantago ovata husk (Po-husk), sobre biomarcadores de enfermedad cardiovascular (ECV) en sujetos hipercolesterolémicos. El tercero es la identificación de compuestos fenólicos del aceite de oliva virgen (AOV) en plasma humano (en ayunas y en fase postprandial) y el cuarto, el desarrollo de una aplicación informáti...

  12. A new species of clausophyid calycophoran siphonophore (Cnidaria: Hydrozoa), Kephyes hiulcus sp. nov., widely distributed throughout the world's oceans.

    Science.gov (United States)

    Grossmann, Mary Matilda; Lindsay, Dhugal John

    2017-04-03

    A new species of clausophyid siphonophore, Kephyes hiulcus sp. nov. is described. It can most easily be differentiated from its congener Kephyes ovata by the shape of the hydroecium in the anterior nectophore of the polygastric stage. This is open over the entire height of the nectophore in K. hiulcus sp. nov., and it is this character from which its specific name is derived. This species was found in the eastern and western Pacific Ocean, as well as the Celebes and Mediterranean Seas, indicating that this species is both relatively common and geographically widespread.

  13. Isolation of a Gastrodia Antifungal Protein Gene from a Genomic Library of G. elata and Its Sequence Analysis

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    A new genomic DNA encoding a member of Gastrodia antifungal protein family is isolated and sequenced.This gene contains a 510 bp open reading frame and 531 bp promoter region without introns.Sequence analysis indicates that a 28 amino acids signal peptide exists at the N-terminal.It shows high sequence homology with the mannose-binding lectinsfrom Epipactis hellebo-rine, Listera ovata and Cymbidium hybrid.A putative TATA box and transcription start site is dete cted in the promoter region.

  14. FRUITS AND SIMILES AND METAPHORS ON FRUITS IN CLASSICAL TURKISH LITERATURE (DIVAN POETRY / DIVAN SIIRINDE MEYVELER VE MEYVELERDEN HAREKETLE YAPILAN TESBIH VE MECAZLAR

    Directory of Open Access Journals (Sweden)

    Dr. Abdülkerim GÜLHAN

    2008-10-01

    Full Text Available We have surveyed 40 divans belonging differentcenturies and different regions in classical TurkishLiterature. Đn the works we have looked up, poets used fruitnames such as pear, quince, almond, hickory, apple, plum,filbert, peanut, date palm, jujube, oleaster, fig, coffee,watermelon, melon, apricot, cherry, lemon, pomegranate,peach, bitter orange, grape, morello, olive and mademetaphor regarding their trees, forms, tastes, colors, flowersand functions. Many characteristical features of “the lovedone” were given with word games on fruits.

  15. Cultural Resources Survey, Harry S. Truman Dam and Reservoir Project, Missouri. Volume 10. Environmental Study Papers.

    Science.gov (United States)

    1983-02-01

    character In lower A2 at 30 cm. 99 S Locality: 24 SOIL CLASSIFICATION: Typic Ochraqualf 0 FEDON NO,: 24 LOCATIOW: In the SE 1/4 SW 1/4, Sec. 3, T38N...CLASSIFICATION: Typic Albaqualf FEDON iO,: 25 LOCATIOiJ: In the NE 1/4 NW 1/4, sec. 9, T38N, R22W, Hickory county, HO. SLOPE (’): 1-2 GEOIIORPHIC SURFACE: T...unrubbed); Remarks: Sampling terminated at 119 cm. Monolith preserved (0-119 c). 101 Locality: 26 SOIL CLASSIFICATION: Typic Argiaquoll FEDON O,: 26

  16. Asian Carp Survivability Experiments and Water Transport Surveys in the Illinois River, Volume 1

    Science.gov (United States)

    2013-01-01

    current. It is highly dependent on the amount of dissolved solids (such as salt ) in the water (U.S. Geological Survey (USGS) website, accessed...Sluice Gate Calumet River Indiana Harbor Burns Harbor O’Brien Lock-and-Dam Ill in oi s In di an a L ittle C alum et Ri ver Grand Calumet River Brandon...Lock-and-Dam Hickory Creek D es P la in e s R i v e r Lockport Lock-and-Dam Electric Barrier(s) Calumet Sag Channel De s P lai ne s R ive r Salt C

  17. A Formal Approach to Discourse Anaphora

    Science.gov (United States)

    1978-05-01

    e.g. 90. Bruoe didn’t marry a Swedish girl. Sie was a brunette . Here the speaker may intend "she" to refer to the Just-mentioned girl that...others, each in a different way, e.g., "Bruce takes sugar in his coffee, pride in his work and offense at the slightest innuendo." u <#5>. One sense...animal 56a. Alongside the trail were an elm, a hickory, two pines, a sugar maple and a white oak. b. The deciduous ones were putting on a good show

  18. 从美国入境胡桃木上截获胡桃缢虎天牛

    Institute of Scientific and Technical Information of China (English)

    叶军; 钱天荣

    2004-01-01

    2003年5月,上海局对从美国入境的胡桃原木(Juglans nigra)进行检疫时,截获一种天牛,经鉴定为胡桃缢虎天牛(Megacyllene caryae 1908)。由于该种天牛在我国没有分布,且有一定的危害性,笔者在此就该种天牛作一简单介绍。

  19. Stomatal acclimation to vapour pressure deficit doubles transpiration of small tree seedlings with warming

    DEFF Research Database (Denmark)

    Marchin, Renée M.; Broadhead, Alice A.; Bostic, Laura E.

    2016-01-01

    .5-1.3 kPa on transpiration and stomatal conductance (gs ) of tree seedlings in the temperate forest understory (Duke Forest, North Carolina, USA). We observed peaked responses of transpiration to VPD in all seedlings, and the optimum VPD for transpiration (Dopt ) shifted proportionally with increasing...... chamber VPD. Warming increased mean water use of Carya by 140% and Quercus by 150%, but had no significant effect on water use of Acer. Increased water use of ring-porous species was attributed to (1) higher air T and (2) stomatal acclimation to VPD resulting in higher gs and more sensitive stomata...

  20. Thermal effects on the growth and fatty acid composition of four harmful algal bloom species: Possible implications for ichthyotoxicity

    Science.gov (United States)

    Hyun, Bonggil; Ju, Se-Jong; Ko, Ah-Ra; Choi, Keun-Hyung; Jung, Seung Won; Jang, Pung-Guk; Jang, Min-Chul; Moon, Chang Ho; Shin, Kyoungsoon

    2016-09-01

    Little is known regarding how harmful algal bloom species respond to different temperatures in terms of fatty acid production. This study examined the effects of temperature on the growth rates, cell volumes, and fatty acid concentrations and compositions of four harmful algal bloom species (HABs), Akashiwo sanguinea, Alexandrium tamarense, Chattonella ovata, and Prorocentrum minimum. The HABs species were cultured at 15, 20, 25, and 30°C in a nutrient-enriched medium. Three of the species maintained optimal growth rates over a wide range of temperatures, but A. tamarense did not. The cell volumes of each species showed little change over the temperature range. The total fatty acid concentrations in A. sanguinea, A. tamarense and C. ovata decreased as the temperature increased, but P. minimum showed no trend in this respect. Polyunsaturated fatty acids (PUFAs), the key biochemical components that maintain cell membrane fluidity and which are associated with toxicity, decreased in both concentration and proportion of total fatty acids as temperature increased, except in A. sanguinea, in which the proportion of PUFAs to the total fatty acids increased. These reductions in PUFA concentration and proportion could reduce cell membrane fluidity and toxicity in HABs; however, enhanced growth and/or ruptured cells, which are considered more toxic than intact cells, could compensate for the reduced per-cell toxicity. This phenomenon might impact on the marine ecosystem and aquaculture industry.

  1. Structural investigation of the biosynthesis of alternative lower ligands for cobamides by nicotinate mononucleotide: 5,6-dimethylbenzimidazole phosphoribosyltransferase from Salmonella enterica.

    Science.gov (United States)

    Cheong, C G; Escalante-Semerena, J C; Rayment, I

    2001-10-05

    Nicotinate mononucleotide (NaMN):5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT) from Salmonella enterica plays a central role in the synthesis of alpha-ribazole, a key component of the lower ligand of cobalamin. Surprisingly, CobT can phosphoribosylate a wide range of aromatic substrates, giving rise to a wide variety of lower ligands in cobamides. To understand the molecular basis for this lack of substrate specificity, the x-ray structures of CobT complexed with adenine, 5-methylbenzimidazole, 5-methoxybenzimidazole, p-cresol, and phenol were determined. Furthermore, adenine, 5-methylbenzimidazole, 5-methoxybenzimidazole, and 2-hydroxypurine were observed to react with NaMN within the crystal lattice and undergo the phosphoribosyl transfer reaction to form product. Significantly, the stereochemistries of all products are identical to those found in vivo. Interestingly, p-cresol and phenol, which are the lower ligand in Sporomusa ovata, bound to CobT but did not react with NaMN. This study provides a structural explanation for how CobT can phosphoribosylate most of the commonly observed lower ligands found in cobamides with the exception of the phenolic lower ligands observed in S. ovata. This is accomplished with minor conformational changes in the side chains that constitute the 5,6-dimethylbenzimidazole binding site. These investigations are consistent with the implication that the nature of the lower ligand is controlled by metabolic factors rather by the specificity of the phosphoribosyltransferase.

  2. Structural insights into the function of the nicotinate mononucleotide:phenol/p-cresol phosphoribosyltransferase (ArsAB) enzyme from Sporomusa ovata†‡

    Science.gov (United States)

    Newmister, Sean A.; Chan, Chi Ho; Escalante-Semerena, Jorge C.; Rayment, Ivan

    2012-01-01

    Cobamides (Cbas) are cobalt (Co) containing tetrapyrrole-derivatives involved in enzyme-catalyzed carbon skeleton rearrangements, methyl-group transfers, and reductive dehalogenation. The biosynthesis of cobamides is complex and is only performed by some bacteria and achaea. Cobamides have an upper (Coβ) ligand (5′-deoxyadenosyl or methyl) and a lower (Coα) ligand base that contribute to the axial Co coordinations. The identity of the lower Coα ligand varies depending on the organism synthesizing the Cbas. The homoacetogenic bacterium Sporomusa ovata synthesizes two unique phenolic cobamides (i.e., Coα-(phenolyl/p-cresolyl)cobamide), which are used in the catabolism of methanol and 3,4-dimethoxybenzoate by this bacterium. The S. ovata ArsAB enzyme activates a phenolic lower ligand prior to its incorporation into the cobamide. ArsAB consists of two subunits, both of which are homologous (~35% identity) to the well-characterized Salmonella enterica CobT enzyme, which transfers nitrogenous bases such as 5,6-dimethylbenzimidazole (DMB) and adenine, but cannot utilize phenolics. Here we report the three-dimensional structure of ArsAB ,which shows that the enzyme forms a psuedosymmetric heterodimer, provides evidence that only the ArsA subunit has base:phosphoribosyl-transferase activity, and propose a mechanism by which phenolic transfer is facilitated by an activated water molecule. PMID:23039029

  3. Essential oil of three Uvaria species from Ivory Coast.

    Science.gov (United States)

    Muriel, Koffi A; Félix, Tonzibo Z; Figueredo, Gilles; Chalard, Pierre; N'guessan, Yao T

    2011-11-01

    Different parts of Uvaria ovata (Dunals) A, U. anonoides Baker f. and U. tortilis A. Chev were collected from Ivory Coast, in Toumodi (center), Agboville (south-east) and Sikensi (south), respectively. The essential oils, obtained by hydrodistillation using a Clevenger-type apparatus, were investigated by CG and CG/MS. The proportion of the chromatographed constituents identified varied from 92.5% to 98.5%. For U. ovata, the root bark oil comprised mainly camphene (10.2%), beta-pinene (10.1%), epi-alpha-cadinol (13.2%) and intermedeol (9.7%), while the oil of the stem bark was dominated by epi-alpha-cadinol (27.3%), intermedeol (11.9%) and benzyl benzoate (13.4%). The oil of the leaves showed beta-caryophyllene (15.6%), germacrene D (24.2%) and benzyl benzoate (18.3%) as the most abundant constituents. The leaf oil of U. anonoides was rich in 2,5-dimethoxy-p-cymene (15.5%), bicyclogermacrene (21.3%) and benzyl benzoate (8.7%), while, gamma-terpinene (31.7%), beta-caryophyllene (23.9%) and germacrene D (15.8%) constituted the main components of the stem bark oil of U. tortilis.

  4. Importance of consumer perceptions in fiber-enriched food products. A case study with sponge cakes.

    Science.gov (United States)

    Tarrega, Amparo; Quiles, Amparo; Morell, Pere; Fiszman, Susana; Hernando, Isabel

    2017-02-22

    Sponge cakes enriched with fiber from different sources (maltodextrin, wheat, apple, blackcurrant and a mixture of potato and Plantago ovata) were studied. Profiling of the different cakes was carried out, first using a check-all-that-apply (CATA) question then evaluating the consumers' likings using a hedonic scale. The consumers also completed a nutrition knowledge (NK) questionnaire that was used to classify them according to their NK level. The instrumental texture of the cakes was evaluated by the texture profile analysis (TPA) method. The consumers' response was not linked to their NK level, but it mainly depended on the importance they gave to the cakes' distinctive sensory characteristics. In general, liking increased for samples considered easy to chew, spongy, soft and sweet, and decreased for samples perceived as tasteless, dry or having a fruity or an odd flavor. The sponge cakes containing maltodextrin or wheat fiber, which mostly resembled a conventional cake, were the most liked in general. Those containing the other three fibers were rejected by part of the consumers, for being tasteless in the case of potato plus Plantago ovata fiber, for being dry and doughy in the case of apple fiber and for having an odd flavor in the case of blackcurrant fiber.

  5. Antioxidative activities and active compounds of extracts from Catalpa plant leaves.

    Science.gov (United States)

    Xu, Hongyu; Hu, Gege; Dong, Juane; Wei, Qin; Shao, Hongbo; Lei, Ming

    2014-01-01

    In order to screen the Catalpa plant with high antioxidant activity and confirm the corresponding active fractions from Catalpa ovata G. Don, C. fargesii Bur., and C. bungei C. A. Mey., total flavonoid contents and antioxidant activities of the extracts/fractions of Catalpa plant leaves were determined. The determined total flavonoid content and antioxidant activity were used as assessment criteria. Those compounds with antioxidant activity were isolated with silica gel column chromatography and ODS column chromatography. Our results showed that the total flavonoid content in C. bungei C. A. Mey. (30.07 mg/g · DW) was the highest, followed by those in C. fargesii Bur. (25.55 mg/g · DW) and C. ovata G. Don (24.96 mg/g · DW). According to the determination results of total flavonoid content and antioxidant activity in 3 clones of leaves of C. bungei C. A. Mey., the total flavonoid content and antioxidant activity in crude extracts from C. bungei C. A. Mey. 6 (CA6) leaves were the highest. Moreover, the results showed that the total flavonoid content and antioxidant activities of ethyl acetate (EA) fraction in ethanol crude extracts in CA6 leaves were the highest, followed by n-butanol, petroleum ether (PE), and water fractions. Two flavonoid compounds with antioxidant activity were firstly isolated based on EA fraction. The two compounds were luteolin (1) and apigenin (2), respectively.

  6. Potentially harmful Ostreopsis spp. in the coastal waters of Alexandria - Egypt

    Directory of Open Access Journals (Sweden)

    A. ISMAEL

    2013-01-01

    Full Text Available Ostreopsis spp. has been reported for the first time from the Egyptian Mediterranean waters. Macroalgal samples were collected monthly between June 2005 and December 2007, from the rocks at Abu Qir, from less than 1.5 m depth, and their associated microalgae examined. Populations of two Ostreopsis morphotypes were found to occur in this location, east of Alexandria, viz., O. cf ovata Fukuyo and Ostreopsis morph1. The Ostreopsis spp. was abundant and dominant during the summer. They were more abundant as epiphytes of the brown algae Padina sp. and Sargassum sp., less abundant on the red algae Corallina sp., Jania sp., Laurencia sp. and even less so on the green algae Ulva spp. Ostreopsis cf. ovata was also identified during the summer months on the same macroalgal species, although in a much lower abundance. Ostreopsis spp. alternated in dominance with the benthic cyanobacteria Oscillatoria spp. and the diatom Licmophora sp. Other benthic dinoflagellates recorded at low abundance included Amphidinium carterae, Gymnodinium sp. and Prorocentrum lima.

  7. Antioxidative Activities and Active Compounds of Extracts from Catalpa Plant Leaves

    Directory of Open Access Journals (Sweden)

    Hongyu Xu

    2014-01-01

    Full Text Available In order to screen the Catalpa plant with high antioxidant activity and confirm the corresponding active fractions from Catalpa ovata G. Don, C. fargesii Bur., and C. bungei C. A. Mey., total flavonoid contents and antioxidant activities of the extracts/fractions of Catalpa plant leaves were determined. The determined total flavonoid content and antioxidant activity were used as assessment criteria. Those compounds with antioxidant activity were isolated with silica gel column chromatography and ODS column chromatography. Our results showed that the total flavonoid content in C. bungei C. A. Mey. (30.07 mg/g·DW was the highest, followed by those in C. fargesii Bur. (25.55 mg/g·DW and C. ovata G. Don (24.96 mg/g·DW. According to the determination results of total flavonoid content and antioxidant activity in 3 clones of leaves of C. bungei C. A. Mey., the total flavonoid content and antioxidant activity in crude extracts from C. bungei C. A. Mey. 6 (CA6 leaves were the highest. Moreover, the results showed that the total flavonoid content and antioxidant activities of ethyl acetate (EA fraction in ethanol crude extracts in CA6 leaves were the highest, followed by n-butanol, petroleum ether (PE, and water fractions. Two flavonoid compounds with antioxidant activity were firstly isolated based on EA fraction. The two compounds were luteolin (1 and apigenin (2, respectively.

  8. Functional transition of Pak proto-oncogene during early evolution of metazoans.

    Science.gov (United States)

    Watari, A; Iwabe, N; Masuda, H; Okada, M

    2010-07-01

    Proto-oncogenes encode signaling molecular switches regulating cellular homeostasis in metazoans, and can be converted to oncogenes by gain-of-function mutations. To address the molecular basis for development of the regulatory system of proto-oncogenes during evolution, we screened for ancestral proto-oncogenes from the unicellular choanoflagellate Monosiga ovata by monitoring their transforming activities, and isolated a Pak gene ortholog encoding a serine/threonine kinase as a 'primitive oncogene'. We also cloned Pak orthologs from fungi and the multicellular sponge Ephydatia fluviatilis, and compared their regulatory features with that of M. ovata Pak (MoPak). MoPak is constitutively active and induces cell transformation in mammalian fibroblasts, although the Pak orthologs from multicellular animals are strictly regulated. Analyses of Pak mutants revealed that structural alteration of the auto-inhibitory domain (AID) of MoPak confers higher constitutive kinase activity, as well as greater binding ability to Rho family GTPases than the multicellular Paks, and this structural alteration is responsible for cell transformation and disruption of multicellular tissue organization. These results show that maturation of AID function was required for the development of the strict regulatory system of the Pak proto-oncogene, and suggest a potential link between the establishment of the regulatory system of proto-oncogenes and metazoan evolution.

  9. Mapping hardwood forests through a two-stage unsupervised classification by integrating Landsat Thematic Mapper and forest inventory data

    Science.gov (United States)

    Shao, Gang; Pauli, Benjamin P.; Haulton, G. Scott; Zollner, Patrick A.; Shao, Guofan

    2014-01-01

    Sound forest management requires accurate forest maps at an appropriate scale. Forest cover data developed at a national scale may be too coarse for forest management at a local level. We demonstrated a two-stage unsupervised classification, integrating Continuous Forest Inventory (CFI) data and Landsat imageries, to classify forest types for Indiana State Forests (ISF) and 8-km surrounding areas. In the first stage, an automatic unsupervised classification assisted by CFI data was applied in ISF. In the second stage, the resultant forest cover information from the first stage was used to expand the classification area into the 8-km surrounding areas. Splitting the classification procedure into two stages made it possible to expand the classification area beyond the coverage of the CFI data. This data-aided unsupervised classification approach increased the repeatability of forest mapping. The resultant map contains five forest types: conifer, conifer-hardwood, maple, mixed hardwood, and oak-hickory forests. The overall accuracy was 81.9%, and the total disagreement was 0.176. The accuracies of conifer, conifer-hardwood, maple, mixed hardwood, and oak-hickory forests were 81.6, 63.4, 75.0, 33.3, and 90%, respectively. This forest mapping technique is suitable for automated mapping of forest areas where extensive plot data are available.

  10. Indiana forest cover mapping based on multi-stage integrated classification using satellite and in situ forest inventory data

    Science.gov (United States)

    Shao, Gang

    Forest species classification through remote sensing data is a complex process, which usually is done either at a coarse level or with low accuracy. This study examines a multi-stage classification algorithm combining supervised and unsupervised classifications to classify forest areas in Indiana. Integrated classification makes the procedures automatic and reduces human errors. Splitting the classification into two steps increases the accuracy with limited ground data. In the first step, in which the Indiana state forest area is classified, the point plug-in classification algorithm is employed, because plenty of ground data are available. In the second step the classifying of the state forest including a surrounding 8km buffer, the ground data are insufficient to process the point plug-in classification approach. In this case, the polygon plug-in classification algorithm is used to realize the extended area classification at the second stage. The resultant land cover map has six tree species (conifer, mixed forest, oak and hickory, mixed oak and hickory/ hardwood, maple and other hardwood). The overall accuracy is 81.93%.

  11. 长山核桃嫁接技术研究%Study on G rafting T echniques of C arya illinoensis

    Institute of Scientific and Technical Information of China (English)

    陈雷

    2014-01-01

    In this paper effects of different periods, varieties and grafting m ethods on the survival rates of grafted plantlets of Carya illinoensis were contrastively analyzed and the optim al period and grafting m ethod were screened out, which could m ake the survival rate of grafted plantlets of Carya illinoensis reach over 95% and significantly im prove the grafting work efficiency.%本文通过对长山核桃的不同时期、不同品种和不同嫁接方法对苗木嫁接成活率影响的对比分析,筛选出了长山核桃苗木嫁接最佳时间段和最佳嫁接方法,能使长山核桃苗木嫁接成活率达到95%以上,显著提高了苗木嫁接时的工作效率。

  12. Development and characterization of new microsatellites for walnut (Juglans regia).

    Science.gov (United States)

    Zhang, Z Y; Han, J W; Jin, Q; Wang, Y; Pang, X M; Li, Y Y

    2013-01-01

    The expressed sequence tag (EST) database represents a potentially valuable resource for the development of simple sequence repeat (SSR) markers for use in evolutionary studies. EST-SSRs reveal polymorphisms not only within the source taxon, but in related taxa as well. In this paper, we describe a case study in which the publicly available walnut (Juglans regia) EST database was used to develop SSR markers for use in the genetic analysis of the widespread Juglans nigra and Carya cathayensis and an endangered species Annamocarya sinensis. A total of 7262 unigenes, including 1911 contigs and 5351 singletons, were obtained from 13,559 ESTs retrieved from the NCBI database. The 7262 unigenes were further reduced to 706 EST-SSR sequences containing 805 SSR loci. Then, 309 EST-SSR primers were randomly designed, and 77 were identified with five high across-species transferability cross-species: namely, J. regia, J. nigra, C. cathayensis, Carya dabieshanensis, and A. sinensis. Thirteen highly polymorphic EST-SSRs were further used for genetic analyses in these above five species.

  13. Suitability of monotypic and mixed diets for Anopheles hermsi larval development.

    Science.gov (United States)

    Beasley, Donald A; Walton, William E

    2016-06-01

    The developmental time and survival to eclosion of Anopheles hermsi Barr & Guptavanij fed monotypic and mixed diets of ten food types were examined in laboratory studies. Larvae fed monotypic diets containing animal detritus (freeze-dried rotifers, freeze-dried Daphnia pulicaria, and TetraMin® fish food flakes) and the mixotrophic protistan Cryptomonas ovata developed faster and survived better than larvae that were fed other monotypic diets. Survival to adulthood of larvae fed several concentrations of the diatom Planothidium (=Achnanthes) lanceolatum was poor (1% C20 polyunsaturated fatty acids as total fat, but regardless of essential fatty acid content, algae that produced mucilage and filaments that sank out of the feeding zone were poor quality diets.

  14. Concentrations of heavy metals in sediment and organisms during a harmful algal bloom (HAB) at Kun Kaak Bay, Sonora, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Garcia-Hernandez, Jaqueline [Centro de investigacion en Alimentacion y Desarrollo AC (CIAD) Guaymas Unit, Carretera al Varadero Nal. Km 6.6, Apdo. Postal 284, CP 85480 Guaymas, Sonora (Mexico)]. E-mail: jaqueline@cascabel.ciad.mx; Garcia-Rico, Leticia [Centro de investigacion en Alimentacion y Desarrollo AC (CIAD), Carretera a la Victoria Km 0.6, Apdo. Postal 1735, CP 83000 Hermosillo, Sonora (Mexico)]. E-mail: lgarciar@cascabel.ciad.mx; Jara-Marini, Martin E. [Centro de investigacion en Alimentacion y Desarrollo AC (CIAD), Carretera a la Victoria Km 0.6, Apdo. Postal 1735, CP 83000 Hermosillo, Sonora (Mexico)]. E-mail: mjara@cascabel.ciad.mx; Barraza-Guardado, Ramon [Departamento de Investigaciones Cientificas y Tecnologicas de la Universidad de Sonora (DICTUS), Rosales y Ninos Heroes s/n Col. Centro, CP 83000 Hermosillo, Sonora (Mexico)]. E-mail: rbarraza@rtn.uson.mx; Hudson Weaver, Amy [Comunidad y Biodiversidad AC - COBI, Terminacion Bahia de Bacochibampo s/m, Fraccionamiento Lomas de Cortes, CP 85450 Guaymas, Sonora (Mexico)]. E-mail: ahw@cobi.org.mx

    2005-07-01

    In early April 2003, fishermen from Kino Bay Sonora alerted us about a massive die-off of fish and mollusks occurring at Kun Kaak Bay. Phytoplankton samples taken on 17 May 2003 reported the presence of a harmful algal bloom composed of Chatonella marina, Chatonella cf. ovata, Gymnodinium catenatum and Gymnodinium sanguineum. On 22 of May, we collected samples of water, sediment and organisms at the affected area. Physicochemical parameters and nutrients were measured in water samples from different depths. Sediment and benthic organisms were analyzed for Cd, Cu, Zn, Pb and Hg. We found concentrations of heavy metals higher than background levels for this area. Cadmium and Lead concentrations in sediment from the HAB area were up to 6x greater than background levels and Cd in mollusks was 8x greater than regulations allow. A relationship between elevated Cd and Pb concentrations in sediment and the survival of toxic dinoflagellates is suspected.

  15. Public health intervention linked to a toxic microalgae bloom in Mijas beach (Malaga, Spain); Intervencion en salud publica relacionada con la proliferacion de microalgas toxicas en una playa de Mijas (Malaga; Espana)

    Energy Technology Data Exchange (ETDEWEB)

    Gamez de la Hoz, J.; Padilla Fortes, A.

    2012-07-01

    This paper provide an overview of the surveillance environmental efforts and risk management for the public health linked to the register of a disease outbreak related to an episode of toxic potentially and harmful microalgae, identified during the summer of 2010 in a recreational beach of a touristic municipality in the coast of Malaga (Spain). Phytoplankton analyses showed the presence of different species producers of marine biotoxins, dominating Ostreopsis cf. ovata in the followed immediately days to the communication of 39 clinical cases of people that required health cares. The risks of the toxins produced by microalgae must be taken into account in the health networks surveillance for recreational waters. This study suggests the possibility to review the actions of the public health services from Public Administration, to the light of the increasing information on episodic harmful algal blooms. (Author)

  16. Epidemiology of bovine hemoprotozoa parasites in cattle and water buffalo in Vietnam

    Science.gov (United States)

    WEERASOORIYA, Gayani; SIVAKUMAR, Thillaiampalam; LAN, Dinh Thi Bich; LONG, Phung Thang; TAKEMAE, Hitoshi; IGARASHI, Ikuo; INOUE, Noboru; YOKOYAMA, Naoaki

    2016-01-01

    A PCR-based survey of hemoprotozoa parasites detected Babesia bigemina, Theileria orientalis and Trypanosoma theileri among cattle and water buffalo in Vietnam, and a new Babesia sp. closely related to Babesia ovata was detected in cattle only. In addition, Theileria annulata and Trypanosoma evansi were not detected in both cattle and water buffalo. Phylogenetic analysis detected T. orientalis MPSP genotypes 3, 5, 7 and N3 in cattle and 5, 7, N1 and N2 in water buffalo. Additionally, water buffalo-derived T. theileri CATL sequences clustered together with a previously reported cattle-derived sequence from Vietnam. This is the first report of a new Babesia sp. in cattle, and T. orientalis MPSP genotype 7 and T. theileri in water buffalo in Vietnam. PMID:27149894

  17. Function and the biosynthesis of unusual corrinoids by a novel activation mechanism of aromatic compounds in anaerobic bacteria

    Science.gov (United States)

    Stupperich, E.; Eisinger, H. J.

    A corrinoid screening of several phylogenetically diverse ``archaebacteria'' revealed vitamin B12-like corrinoids. This indicates an optimized structure and function relationship of the corrinoids under different bacterial growth conditions during the early evolution of live. Some of these corrinoids have been substituted by modified corrinoids in growing cells without affecting the generation times of the bacteria. In this respect, the discovery of the unique para-cresolyl cobamide from the eubacterium Sporomusa ovata attracted attention. The unusual structure of this corrinoid was achieved by a biosynthesis proceeding via a novel and stereospecific activation mechanism of aromatic compounds. The corrinoid was detected both in the membrane fraction and in the soluble fraction of the cells. Methyltransfer is one of the probable functions of the para-cresolyl cobamide in Sporomusa.

  18. Production of long chain alkyl esters from carbon dioxide and electricity by a two-stage bacterial process.

    Science.gov (United States)

    Lehtinen, Tapio; Efimova, Elena; Tremblay, Pier-Luc; Santala, Suvi; Zhang, Tian; Santala, Ville

    2017-11-01

    Microbial electrosynthesis (MES) is a promising technology for the reduction of carbon dioxide into value-added multicarbon molecules. In order to broaden the product profile of MES processes, we developed a two-stage process for microbial conversion of carbon dioxide and electricity into long chain alkyl esters. In the first stage, the carbon dioxide is reduced to organic compounds, mainly acetate, in a MES process by Sporomusa ovata. In the second stage, the liquid end-products of the MES process are converted to the final product by a second microorganism, Acinetobacter baylyi in an aerobic bioprocess. In this proof-of-principle study, we demonstrate for the first time the bacterial production of long alkyl esters (wax esters) from carbon dioxide and electricity as the sole sources of carbon and energy. The process holds potential for the efficient production of carbon-neutral chemicals or biofuels. Copyright © 2017 Elsevier Ltd. All rights reserved.

  19. A MONOGRAPH OF THE GENUS SCHOUTENIA* Korth. (Tiliaceae

    Directory of Open Access Journals (Sweden)

    ROEKMOWATI ROEKMOWATI

    2015-11-01

    Full Text Available The genus consists of 8 species in Siam, Indochina, the Malay Peninsula, Sumatra,Borneo, Java, and the Lesser Sunda Islands. It is here divided into 2 subgenera,the monotypic Schoutevia with S. cvata Korth. and Chartacalyx with S. accres-cens (Mast. Curtis as type species. Chartacalyx is divided into 2 sections, Char-tacalyx and A disci flora with S. kuiistleri King as type spscies.Three species, S. curtisii, corneri, and kostermansii are considered new.S. hypoleuca Pierre is reduced to synonymy of S. ovata Korth. S. peregrines Craib is reduced to a subspecies of S. glomerata King. The varieties of S. accrescens (Mast. Curtis are deleted. The species is dividedinto 3 subspecies: accrescens, stellata, and borneensis. A forma lepidota is reeog-nized for subspecies accrescens.. S. buurmanii K. et V. and S. kunstleri King- are considered to be differentspecies.

  20. Enhanced microbial electrosynthesis with three-dimensional graphene functionalized cathodes fabricated via solvothermal synthesis

    DEFF Research Database (Denmark)

    Aryal, Nabin; Halder, Arnab; Tremblay, Pier-Luc

    2016-01-01

    must be implemented. Here, we report the development of a 3D-graphene functionalized carbon felt composite cathode enabling faster electron transfer to the microbial catalyst Sporomusa ovata in a MES reactor. Modification with 3D-graphene network increased the electrosynthesis rate of acetate from CO2...... by 6.8 fold. It also significantly improved biofilm density and current consumption. A 2-fold increase in specific surface area of the 3D-graphene/carbon felt composite cathode explained in part the formation of more substantial biofilms compared to untreated control. Furthermore, in cyclic voltammetry...... analysis, 3D-graphene/carbon felt composite cathode exhibited higher current response. The results indicate that the development of a 3D-network cathode is an effective approach to improve microbe-electrode interactions leading to productive MES systems....

  1. Chemotaxonomy and evolution of Plantago L

    DEFF Research Database (Denmark)

    Rønsted, Nina; Franzyk, Henrik; Mølgaard, Per

    2003-01-01

    In continuation of our investigations of the genus Plantago L. (Plantaginaceae), sixteen species were investigated with respect to watersoluble glycosides. The iridoids auroside, strictoloside and globularicisin, as well as poliumoside, 3-[(4-beta-D-glucopyranosyloxy)phenyl]propionic acid and 2......-[4-(beta-D-glucopyranosyloxy)phenyl]acetic acid were isolated from Plantago for the first time. The latter compound has not previously been isolated as a natural product. Sorbitol was the main carbohydrate in all the species investigated. The distribution of iridoids correlates well with the morphological...... and deoxygeniposidic acid were incorporated into aucubin and geniposidic acid in Plantago ovata, consistent with earlier findings, but no incorporation into asperuloside was observed. The evolution of biosynthetic pathways in Plantago is discussed....

  2. Polysaccharide from Plantago as a green corrosion inhibitor for carbon steel in 1M HCl solution.

    Science.gov (United States)

    Mobin, Mohammad; Rizvi, Marziya

    2017-03-15

    Polysaccharide from Plantago ovata was investigated for its inhibition characteristics for carbon steel corrosion in 1M HCl. The mucilage of the Plantago is comprised of a highly branched polysaccharide, arabinosyl (galaturonic acid) rhamnosylxylan (AX), which is mainly responsible for the corrosion inhibition of the carbon steel. The techniques that were used to assess the inhibition and adsorption properties of the AX in the acid solution are gravimetric method, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), atomic force microscopy (AFM), UV-vis spectroscopy and FTIR. Thermodynamic and activation parameters revealed that the spontaneous adsorption of AX on carbon steel was mixed type and predominantly chemical in nature. Quantum chemical analysis supports the proposed mechanism of inhibition. AX from Plantago could serve as a green corrosion inhibitor for the carbon steel in hydrochloric medium with good inhibition efficiency but low risk of environmental pollution.

  3. Morphology and molecular phylogeny of an Antarctic population of Paraholosticha muscicola (Kahl, 1932) Wenzel, 1953 (Ciliophora, Hypotricha)

    Science.gov (United States)

    Jung, Jae-Ho; Park, Kyung-Min; Min, Gi-Sik; Berger, Helmut; Kim, Sanghee

    2015-12-01

    The morphology of an Antarctic soil population of Paraholosticha muscicola, type species of Paraholosticha, is described from life and after protargol preparation. The data agree rather well with that of relevant descriptions, but the total variability of several features is relatively high in this species. Paraholosticha ovata and P. lichenicola are very likely junior synonyms. In addition, we sequenced the SSU rRNA gene of P. muscicola and thus we can estimate for the first time the phylogenetic position of a member of the Keronopsidae, the sole hypotrichs that divide in cysts. The molecular data basically support the position derived from morphological concepts, that is, P. muscicola branches off outside the Dorsomarginalia because kinety fragmentation and dorsomarginal rows are lacking. However, as in many other molecular analyses, discrepancies with morphology-based hypothesis are present. The misclassification of Paraholosticha and its sister-group Keronopsis in the Keronidae, with Kerona pediculus as type species, is discussed.

  4. Limnologic-geologic excursion in the territory of the lower Erft River

    Energy Technology Data Exchange (ETDEWEB)

    Friedrich, G.; Thome, K.N.

    1976-01-01

    The geography and hydrology of the area of the excursion are described. There is much damage due to brown coal strip mining operations. Ground water was drained through a canal leading to the Erft River. The water in nearby springs is rich in Fe which repels plant life. The canal contains only a few blue algae (Oscillatoria splendida) and filamentous green algae (Ulothrix tenerrima) which tolerate high Fe concentrations. The Erft shore plant population includes Sparganium erectum, Potamogeton natans, P. pectinatus and Ranunculus fluitans. On flowering plants and stones, diatoms, various green algae (Cladophora glomerata, Stigeoclonium tenue, Oedogonium capillare) and the tropical red alga Compsopogon hookeri were found. The macrozoobenthos is composed mainly of snails (Bithynia tenaculata, Lumnaea ovata, Physa fontinalis, P. acuta and worms of North American origin (Dugesia tifrina, Dendrocoelum lacteum and Planaria lugubris). The Isopoda included Asellus coxalis and A. aquaticus. Leeches (Herpobdella octoculata) and insect larvae (Chironomids, Limnephilids) were also found.

  5. Dicty_cDB: Contig-U15999-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 5, 5' ... 44 0.008 3 ( EY329908 ) CAWY3078.fwd CAWY Helobdella robusta Subtracted E... 34 0.008 4 ( FE192113...itis capitata adu... 38 0.010 3 ( EY304886 ) CAWX18918.fwd CAWX Helobdella robusta Primary Ear... 36 0.011 3... 0.021 2 ( EY343834 ) CAWZ12724.fwd CAWZ Helobdella robusta Primary Lat... 40 0.022 2 ( EY354249 ) CAWZ2965.fwd CAWZ Helobdella robus...ta Primary Late... 40 0.025 2 ( EY292487 ) CAWX10580.fwd CAWX Helobdella robusta...) Monosiga ovata DNA, fosmid clone: MOF-079B13, gen... 42 0.026 2 ( EY312548 ) CAWX24075.fwd CAWX Helobdella robusta

  6. Bioelectrochemical reduction of carbon dioxide by pure culture at the cathode

    DEFF Research Database (Denmark)

    Aryal, Nabin; Tremblay, Pier-Luc; Chen, Leifeng

    2014-01-01

    Microbial electrosynthesis (MES) is an innovative approach in which microbes use electricity toreduce carbon dioxide and produce chemical commodities. This process relies on the ability of electroautotrophic microbes to accept electron from an electrode. The concept of MES has already been...... demonstrated with pure cultures of acetogenic bacteria such as Sporomusa ovate DSM-2662 and Clostridium ljungdahlii. Until now, electron transfer rates from the cathode to the bestelectroautotroph, S. ovata, are still orders of magnitude lower than what is observed in bioanodicprocesses with electrigenic...... bacteria. Hence, we are screening other pure cultures for better MES activities. These bacterial species were pre-selected based on several criteria such as their presence in enrichments of environmental samples in MES systems, their capacity to fix CO2, their incapacity to sporulate, and their ability...

  7. Cytological causes of blond psyllium for male sterility

    Directory of Open Access Journals (Sweden)

    Ashish G. Vala, Fougat. R.S. ,Roshni.S. and Vinay Kumar

    2011-03-01

    Full Text Available Cytological male sterility is a useful trait in plant breeding, especially in medicinal plants such as Cassia angustifolia, Commiphorawightii, Asparagus racemosus .Abnormalities appeared to be the cause of male sterility in plants, we carried out this research in anattempt to make clear the characteristics and inheritance of this male sterility. In Plantago ovata germplasm cytoplasmicabnormality was found to be the cause of abnormality. cytomixis varied from 2% to 48 % in plants. Maximum numbers of PMCscarrying B-chromosomes were recorded in male sterile plants of line JI-214(62%. No B-chromosomes were observed in fertile,sterile and partial male sterile line of JI-107 and maximum abnormal chromosomal segregation was recorded in JI-206. Thesecytological abnormality parameters can be used for hetrosis breeding and hybrid seed production to improve quality of psyllium.

  8. Vegetation heterogeneity on a Late Pennsylvanian braided-river plain draining the Variscan Mountains, La Magdalena Coalfield, northwestern Spain

    DEFF Research Database (Denmark)

    Bashforth, Arden Roy; Falcon-Lang, Howard J; Gibling, Martin R

    2010-01-01

    The spatial heterogeneity and community ecology is reconstructed for Late Pennsylvanian (Stephanian B sensu lato) vegetation preserved in La Magdalena Coal¿eld, northwestern Spain. The ˜ 1500 m thick basin- ¿ll accumulated rapidly along the margin of the Variscan Mountains, and the principal...... pteridium, and Neuropteris ovata) accounting for ˜58% of all plant remains. Sphenopsids and lycopsids were less common but widespread, and cordaitaleans were rare. At the local scale, laterally exposed bedding planes reveal that communities comprised a complex and heterogeneous mosaic of species....... At the landscape scale, ecological gradients are evident from multivariate analyses of quadrats in a facies context. Pteridosperms dominated marginal wetlands adjacent to steep basin margins. A greater proportion of ferns occurred in or adjacent to braided channel belts, consistent with their opportunistic growth...

  9. Phylogeny of Catalpa (Bignoniaceae) inferred from sequences of chloroplast ndhF and nuclear ribosomal DNA%根据叶绿体ndhF和核核糖体DNA序列推断梓属(紫葳科)的系统发育

    Institute of Scientific and Technical Information of China (English)

    李建华

    2008-01-01

    Phylogenetics of Chilopsis and Catalpa (Bignoniaceae) was elucidated based on sequences of chloroplast ndhF and the nrDNA ITS region. In Bignoniaceae, Chilopsis and Catalpa are most closely related as sister genera. Our data supported section Macrocatalpa of the West Indies and section Catalpa of eastern Asian and North American continents. Within section Catalpa, Catalpa ovata of eastern Asia form a clade with North American species, C. speciosa and C. bignonioides, while the other eastern Asian species comprise a clade where C. duclouxii is sister to the clade of C. bungei and C. fargesii. The Caribbean species of Catalpa diverged early from the continental species. More studies are needed to test whether the phylogenetic pattern is common in eastern Asian-North American disjunct genera with species in the West Indies.

  10. 新品之窗

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    康普创新方案助广电系统维持最佳空压 美国北卡罗来纳州HICKORY 2012年4月25日讯-控制广播传输线路中的湿度标准通常需要价格高昂且难以维修的设备,例如瓶装氮气罐和干粉干燥剂等,但如今广电企业有了基于膜脱水技术的崭新选项。康普DryLine Sahara是专为广播电视企业设计的脱水机,为湿度控制这一技术难题,提供高度可靠且更具成本效益的方案。

  11. Tips for cleanroom construction and renovation.

    Science.gov (United States)

    Mixon, William; Huffman, Lanny

    2009-01-01

    The installation or renovation of a cleanroom is an increasing priority among compounders who, to offer sterile preparations, must comply with the most recent version of United States Pharmacopeia revised General Chapter 797 guidelines. To upgrade their pharmacy facilites, many compounders have worked successfully with a large-scale mechanical engineering firm or a specialized construction company dedicated to cleanroom installation. However, a qualified local mechanical contractor with design capability is a valuable and often overlooked resource for the construction of customized stae-of-the-art cleanrooms. In this report, we describe the installation of such a facility in a busy pharmacy and suggest ways in which compounding pharmacists can identify competent local contractors and control the cost of construction and upgrades. The addition of a cleanroom has enabled The Compounding Pharmacy in Hickory, North Carolina, to achieve accreditation from the Pharmacy Compounding Accreditation Board.

  12. Use of geostatistics for remediation planning to transcend urban political boundaries.

    Science.gov (United States)

    Milillo, Tammy M; Sinha, Gaurav; Gardella, Joseph A

    2012-11-01

    Soil remediation plans are often dictated by areas of jurisdiction or property lines instead of scientific information. This study exemplifies how geostatistically interpolated surfaces can substantially improve remediation planning. Ordinary kriging, ordinary co-kriging, and inverse distance weighting spatial interpolation methods were compared for analyzing surface and sub-surface soil sample data originally collected by the US EPA and researchers at the University at Buffalo in Hickory Woods, an industrial-residential neighborhood in Buffalo, NY, where both lead and arsenic contamination is present. Past clean-up efforts estimated contamination levels from point samples, but parcel and agency jurisdiction boundaries were used to define remediation sites, rather than geostatistical models estimating the spatial behavior of the contaminants in the soil. Residents were understandably dissatisfied with the arbitrariness of the remediation plan. In this study we show how geostatistical mapping and participatory assessment can make soil remediation scientifically defensible, socially acceptable, and economically feasible.

  13. An evaluation of ²²⁶Ra and ²²⁸Ra in drinking water in several counties in Texas, USA.

    Science.gov (United States)

    Landsberger, S G; George, G

    2013-11-01

    Naturally Occurring Radioactive Material (NORM) or Technology Enhanced Naturally Occurring Radioactive Material (TENORM) can be a potential health risk. It is now well known that the underlying geology in many parts of Texas has given rise to levels of (226)Ra and (228)Ra that often exceed the limits set by the US Environmental Protection Agency. A detailed literature search was undertaken to assess the levels of (226)Ra and (228)Ra in all of the Texas counties. Several statistical evaluations of the data were performed. The Hickory aquifer in the Llano Uplift region of Texas has consistently had the highest number of (226)Ra and (228)Ra concentrations above the legal limit. As well many of the affected rural communities may not have the financial resources to rectify the problem.

  14. An evaluation of autotrophic microbes for the removal of carbon dioxide from combustion gas streams

    Energy Technology Data Exchange (ETDEWEB)

    Apel, W.A.; Walton, M.R.; Dugan, P.R. (EG G Idaho, Inc., Idaho Falls, ID (United States). Center for Biological Processing Technology)

    1994-11-01

    Carbon dioxide is a greenhouse gas that is believed to be a major contributor to global warming. Studies have shown that significant amounts of CO[sub 2] are released into the atmosphere as a result of fossil fuels combustion. Therefore, considerable interest exists in effective and economical technologies for the removal of CO[sub 2] from fossil fuel combustion gas streams. This work evaluated the use of autotrophic microbes for the removal of CO[sub 2] from coal fired power plant combustion gas streams. The CO[sub 2] removal rates of the following autotrophic microbes were determined: [ital Chlorella pyrenoidosa], [ital Euglena gracilis], [ital Thiobacillus ferrooxidans], [ital Aphanocapsa delicatissima], [ital Isochrysis galbana], [ital Phaodactylum tricornutum], [ital Navicula tripunctata schizonemoids], [ital Gomphonema parvulum], [ital Surirella ovata ovata], and four algal consortia. Of those tested, [ital Chlorella pyrenoidosa] exhibited the highest removal rate with 2.6 g CO[sub 2] per day per g dry weight of biomass being removed under optimized conditions. Extrapolation of these data indicated that to remove CO[sub 2] from the combustion gases of a coal fired power plant burning 2.4 x 10[sup 4] metric tons of coal per day would require a bioreactor 386 km[sup 2] x 1m deep and would result in the production of 2.13 x 10[sup 5] metric tons (wet weight) of biomass per day. Based on these calculations, it was concluded that autotrophic CO[sub 2] removal would not be feasible at most locations, and as a result, alternate technologies for CO[sub 2] removal should be explored. 14 refs., 7 figs., 2 tabs.

  15. 北方城市景观河道浮游藻类群落结构特征%The Structure Characteristics of Plankton Community in Jinhe River

    Institute of Scientific and Technical Information of China (English)

    陈红; 魏彤宇; 张良运; 袁向华

    2011-01-01

    The community structure and species diversity of planktonic algae, and the relationships between planktonic algae and the physicochemical parameters of Jinhe River were analyzed. A total of 81 planktonic algae species belonging to 5 phyla and 39 genera were identified, among which Chlorophyta was dominant and followed by Euglena and Bacillariphyta. The dominant species were Spirulina masima, Cryptomonas erosa, Lepocinclis pseudotexta, Cryptomonas ovata and Chilomonas para-maecium. The results showed that the composition and distribution of algae species and water quality changes matched in principle, indicating that Jinhe River was at the state of the severe eutrophication.%为了解北方城市半封闭景观水体浮游藻类的群落组成,以津河为例,于2009年9月对其浮游藻类进行了调查,初步分析了浮游藻类的群落结构、物种多样性及浮游藻类与津河理化参数的相互关系.结果表明,共计调查浮游藻类81种,39属,绿藻种类最多,其次是硅藻和裸藻;优势种主要是极大螺旋藻(Spirulinamasima)、啮蚀隐藻(Cryptomonas erosa Her.)、伪编织鳞孔藻(Lepocinclis pseudotexta)、卵形隐藻(Cryptomonas ovata Ehr.)、素隐藻(Chilomonas paramaecium);津河的浮游藻类组成、分布特点与津河的水质变化基本吻合,揭示了津河正处于重度富营养化状态的事实.

  16. Inimigos naturais de Mocis latipes (Guenée, 1852 Natural enemies of Mocis latipes (Guenée, 1852

    Directory of Open Access Journals (Sweden)

    André Luiz Lourenção

    1982-01-01

    Full Text Available A partir de infestações naturais de Mocis latipes (Lepidoptera: Noctuidae, em Campinas e em Piracicaba, realizaram-se observações sobre a ocorrência de inimigos naturais desse inseto. Em Campinas, constatou-se um baixo parasitismo de M. latipes por Patelloa similis e Euphorocera floridensis (Diptera: Tachinidae, sendo a primeira espécie predominante nesse parasitismo. A partir de pupas desses taquinídeos, observou-se a emergência de dois exemplares de Brachymeria ovata (Hymenoptera: Chalcididae, indicando a ocorrência de hiperparasitismo nos dipteros. Em campo, ao final de infestação, verificou-se a ação predatória de espécimes de Polistes canadensis (Hymenoptera: Vespidae que se alimentavam de lagartas de M. latipes. Em Piracicaba, notou-se o parasitismo no curuquerê-dos-capinzais por Netelia sp. (Hymenoptera: Ichneumonidae e por P. similis.This paper deals with the occurrence of natural enemies of Mocis latipes (Guenée (Lepidoptera: Noctuidae in Campinas and Piracicaba, State of São Paulo, Brazil. Larvae and pupae were collected in the field and kept in laboratory until the emergence of the parasites. Patelloa similis (Townsend and Euphorocera floridensis Townsend (Diptera: Tachinidae were observed attacking M. latipes and the former being predominant at Campinas. A hyperparasite Brachymeria ovata (Say emerged from the pupae of these tachinid flies. At the end of M. latipes infestation in the field a predator, Polistes canadensis (Hymenoptera: Vespidae, was observed attacking the caterpillars. At Piracicaba, the parasites noted were ichneumon Netelia sp. and tachinid P. similis. At this location Netelia sp. is being observed attacking M. latipes for the first time in Brazil.

  17. Effects of non-steroidal anti-inflammatory drugs on cyanobacteria and algae in laboratory strains and in natural algal assemblages.

    Science.gov (United States)

    Bácsi, István; B-Béres, Viktória; Kókai, Zsuzsanna; Gonda, Sándor; Novák, Zoltán; Nagy, Sándor Alex; Vasas, Gábor

    2016-05-01

    In recent years measurable concentrations of non-steroidal anti-inflammatory drugs (NSAIDs) have been shown in the aquatic environment as a result of increasing human consumption. Effects of five frequently used non-steroidal anti-inflammatory drugs (diclofenac, diflunisal, ibuprofen, mefenamic acid and piroxicam in 0.1 mg ml(-1) concentration) in batch cultures of cyanobacteria (Synechococcus elongatus, Microcystis aeruginosa, Cylindrospermopsis raciborskii), and eukaryotic algae (Desmodesmus communis, Haematococcus pluvialis, Cryptomonas ovata) were studied. Furthermore, the effects of the same concentrations of NSAIDs were investigated in natural algal assemblages in microcosms. According to the changes of chlorophyll-a content, unicellular cyanobacteria seemed to be more tolerant to NSAIDs than eukaryotic algae in laboratory experiments. Growth of eukaryotic algae was reduced by all drugs, the cryptomonad C. ovata was the most sensitive to NSAIDs, while the flagellated green alga H. pluvialis was more sensitive than the non-motile green alga D. communis. NSAID treatments had weaker impact in the natural assemblages dominated by cyanobacteria than in the ones dominated by eukaryotic algae, confirming the results of laboratory experiments. Diversity and number of functional groups did not change notably in cyanobacteria dominated assemblages, while they decreased significantly in eukaryotic algae dominated ones compared to controls. The results highlight that cyanobacteria (especially unicellular ones) are less sensitive to the studied, mostly hardly degradable NSAIDs, which suggest that their accumulation in water bodies may contribute to the expansion of cyanobacterial mass productions in appropriate environmental circumstances by pushing back eukaryotic algae. Thus, these contaminants require special attention during wastewater treatment and monitoring of surface waters.

  18. Gelatinous macroplankton in the Black Sea in the autumn of 2010

    Science.gov (United States)

    Anninsky, B. E.; Finenko, G. A.; Datsyk, N. A.; Ignatyev, S. M.

    2013-11-01

    In October and November of 2010, the gelatinous macroplankton in the northwestern Black Sea and at the Crimean shelf was represented by the scyphozoan jellyfish Aurelia aurita, three species of ctenophores ( Beroe ovata, Mnemiopsis leidyi, and Pleurobrachia pileus), and three species of hydromedusae. A. aurita was more common at the shelf, M. leidyi and P. pileus prevailed at the deeper sea stations, and B. ovata was almost ubiquitous with a biomass from below 1 to 49 g/m2 A. aurita, which had an average biomass of 82-224 g/m2, was dominant at all the stations. M. leidyi, which had a biomass from below 1 to 115 g/m2, was recorded in October at only 14 of the 52 stations and in November at 20 of the 46 stations. The highest biomass of M. leidyi in October (105 to 116 g/m2) was recorded in the deep sea areas; in November, it was also the highest in these areas, but it reached at most 100 g/m2. The average daily ration of Aurelia ranged from 19.4 to 27.3 mg/m2 in October and from 7.0 to 17.2 mg/m2 in November; in both cases, it was insufficient to provide for the minimal physiological requirements. The average daily ration of the Mnemiopsis population (2.8-20.5 mg of zooplankton per m2) was invariably more than sufficient to provide for the minimal physiological requirements. Both predatory species together consumed less than 5% of the daily zooplankton production of the sea.

  19. Susceptibility of eastern U.S. habitats to invasion of Celastrus orbiculatus (oriental bittersweet) following fire

    Science.gov (United States)

    Leicht-Young, Stacey A.; Pavlovic, Noel B.; Grundel, Ralph

    2013-01-01

    Fire effects on invasive species are an important land management issue in areas subjected to prescribed fires as well as wildfires. These effects on invasive species can be manifested across life stages. The liana Celastrus orbiculatus (oriental bittersweet) is a widespread invader of eastern US habitats including those where fire management is in practice. This study examined if prescribed fire makes these habitats more susceptible to invasion of C. orbiculatus by seed at Indiana Dunes National Lakeshore. Four treatments (control, litter removed, high and low intensity fire) were applied in six habitat types (sand savanna/woodland, sand prairie, moraine prairie, sand oak forest, beech-maple forest, and oak-hickory forest) and germinating seedlings were tracked over two growing seasons. Treatment did not have a significant effect on the germination, survival, or biomass of C. orbiculatus. However, habitat type did influence these responses mostly in the first growing season. Moraine prairie, beech-maple forest, and oak-hickory forests had the greatest peak percentage of germinants. Moraine prairie had significantly greater survival than oak forest and savanna habitats. Control plots with intact litter, and the moraine prairie habitat had the tallest seedlings at germination, while tallest final heights and greatest aboveground biomass were highest in oak forest. Thus, fire and litter removal did not increase the susceptibility of these habitats to germination and survival of C. orbiculatus. These results indicate that most eastern US habitats are vulnerable to invasion by this species via seed regardless of the level or type of disturbance to the litter layer.

  20. Analysis of regional rainfall-runoff parameters for the Lake Michigan Diversion hydrological modeling

    Science.gov (United States)

    Soong, David T.; Over, Thomas M.

    2015-01-01

    The Lake Michigan Diversion Accounting (LMDA) system has been developed by the U.S. Army Corps of Engineers, Chicago District (USACE-Chicago) and the State of Illinois as a part of the interstate Great Lakes water regulatory program. The diverted Lake Michigan watershed is a 673-square-mile watershed that is comprised of the Chicago River and Calumet River watersheds. They originally drained into Lake Michigan, but now flow to the Mississippi River watershed via three canals constructed in the Chicago area in the early twentieth century. Approximately 393 square miles of the diverted watershed is ungaged, and the runoff from the ungaged portion of the diverted watershed has been estimated by the USACE-Chicago using the Hydrological Simulation Program-FORTRAN (HSPF) program. The accuracy of simulated runoff depends on the accuracy of the parameter set used in the HSPF program. Nine parameter sets comprised of the North Branch, Little Calumet, Des Plaines, Hickory Creek, CSSC, NIPC, 1999, CTE, and 2008 have been developed at different time periods and used by the USACE-Chicago. In this study, the U.S. Geological Survey and the USACE-Chicago collaboratively analyzed the parameter sets using nine gaged watersheds in or adjacent to the diverted watershed to assess the predictive accuracies of selected parameter sets. Six of the parameter sets, comprising North Branch, Hickory Creek, NIPC, 1999, CTE, and 2008, were applied to the nine gaged watersheds for evaluating their simulation accuracy from water years 1996 to 2011. The nine gaged watersheds were modeled by using the three LMDA land-cover types (grass, forest, and hydraulically connected imperviousness) based on the 2006 National Land Cover Database, and the latest meteorological and precipitation data consistent with the current (2014) LMDA modeling framework.

  1. Oxidative stress and anxiety-like symptoms related to withdrawal of passive cigarette smoke in mice: beneficial effects of pecan nut shells extract, a by-product of the nut industry.

    Science.gov (United States)

    Reckziegel, P; Boufleur, N; Barcelos, R C S; Benvegnú, D M; Pase, C S; Muller, L G; Teixeira, A M; Zanella, R; Prado, A C P; Fett, R; Block, J M; Burger, M E

    2011-09-01

    The present study evaluated the role of pecan nut (Carya illinoensis) shells aqueous extract (AE) against oxidative damage induced by cigarette smoke exposure (CSE) and behavioral parameters of smoking withdrawal. Mice were passively exposed to cigarette smoke for 3 weeks (6, 10, and 14 cigarettes/day) and orally treated with AE (25 g/L). CSE induced lipid peroxidation in brain and red blood cells (RBC), increased catalase (CAT) activity in RBC, and decreased plasma ascorbic acid levels. AE prevented oxidative damage and increased antioxidant defenses of mice exposed to cigarette smoke. In addition, AE reduced the locomotor activity and anxiety symptoms induced by smoking withdrawal, and these behavioral parameters showed a positive correlation with RBC lipid peroxidation. Our results showed the beneficial effects of this by-product of the pecan industry, indicating its usefulness in smoking cessation.

  2. 美国山核桃单芽腹接技术

    Institute of Scientific and Technical Information of China (English)

    李俊南; 熊新武; 习学良; 杨素琼

    2008-01-01

    美国山核桃(Carya illinoensis K.Koch,又名薄壳山核桃或长山核桃,为胡桃科山核桃属的一种落叶乔木,是世界著名优良干果油料树种。近几年美国山核桃在国内多个省份得到了推广发展,特别是在云南被列为“十一五”发展的特色经济林树种之一。美国山核桃需采用本砧嫁接才能使幼苗定植后童期缩短。目前,美国山核桃的嫁接方法主要为腹接和劈接。

  3. Planejamento estatístico de experimentos como uma ferramenta para otimização das condições de biossorção de Cu(II em batelada utilizando-se casca de nozes pecã como biossorvente Statistical design of experiments as a tool for optimizing the batch conditions of Cu(II biosorption using pecan nutshells as biosorbent

    Directory of Open Access Journals (Sweden)

    Jorge L. Brasil

    2007-06-01

    Full Text Available In order to reduce the total number of experiments for achieving the highest amount of adsorbed Cu2+ (qmax using pecan nutshells (Carya illinoensis as biosorbent, a full 2(4 factorial design with two central points was carried out (mass of biosorbent- m, pH, initial metallic ion concentration- C0, time of contact- t. In order to continue the optimization of the system, a central composite surface analysis design with two factors and five central points was carried out. The maximum amount of Cu2+ taken up by the pecan nutshells was 20 mg g-1. These results were confirmed by determining a Cu2+ isotherm using the best conditions attained by the statistical design of experiments.

  4. 云南省核桃资源现状及研究进展%Present situation and research progress of Walnut resources in Yunnan province

    Institute of Scientific and Technical Information of China (English)

    马婷; 郎南军; 杨素琼; 贺娜; 肖良俊

    2012-01-01

    Through the research of Walnut Resources situation in Yunnan Province , this article summarized the current walnut varieties in Yunnan, including traditional fine walnut, new hybrid varieties and Carya illinoensis introduced in recent years, and understood the current walnut cultivation technology in Yunnan province, while The existing problems and development strategy are described in detail.%文章通过对云南省核桃资源现状的研究,总结了目前云南主要的核桃品种,包括传统优良核桃,杂交新品种和近几年引进的美国山核桃,并简单了解当前云南省核桃栽培技术,同时对存在的问题以及发展策略做了阐述。

  5. 美国山核桃实生苗的培育

    Institute of Scientific and Technical Information of China (English)

    温爱存

    2008-01-01

    美国山核桃[Carya illinoensis(Wangenh.)K.Koch]又名美国山核桃、长山核桃,为胡桃科山核桃属植物,属落叶高大乔木,树高可达55m、胸径2.5m,是一种优良的果材兼用树种。原产美国和墨西哥北部。现以美国为中心产区,分布于世界5个洲的20个以上国家和地区,包括美国、墨西哥、意大利、法国、以色列、日本和中国等地。

  6. Sand Dredging Operations in Lafourche Parish, Near Leeville, Louisiana.

    Science.gov (United States)

    1982-04-01

    Campis radicans .. .......... 0.93 48.4 4.2 Carex xrus-corvi. .......... 0.03 3.2 0.1 Carya illinoensis .. ......... 0.16 16.1 0.7 Ceitis laevigata... illinoensis ..... 0.05 5.5 0.4 Diodia virginiana .. ......... 0.05 5.5 0.4 Eclipta alba... .......... 0.16 16.6 1.2 Equisetum prealtum. ......... 0.05 5.5...3.2 0.1 A-4 Table A-2 continued. Species Density Frequency Percent Daubentonia texana ....... . 0.03 3.2 0.1 Desmanthus illinoensis ..... . 0.03 3.2 0.1

  7. Pecan Distribution, Cultural Regionalization and Cultivar Classification in USA%美国山核桃在原产地分布、引种栽培区划及主要栽培品种分类研究概述

    Institute of Scientific and Technical Information of China (English)

    张日清; 吕芳德

    2002-01-01

    @@ 美国山核桃Carya illinoensis是北美最重要、最有价值和最有前途的坚果树种.它的起源可追溯至遥远的白垩纪时代,主要分布于美国和墨西哥北部.美国山核桃栽培历史近300年,此间除了栽培面积的扩大外,还进行了大量的品种改良工作,极大地促进了美国山核桃产量和品质的提高.

  8. 美国山核桃

    Institute of Scientific and Technical Information of China (English)

    吴国良; 陈丽霞; 段良骅; 杨俊强; 宋玉琴

    2005-01-01

    美国山核桃(Carya illinoensis Koch)属胡桃科的山核桃属,又名薄壳山核桃或长山核桃.英文名为Pecan或Hickory。原产北美大陆的美国和墨西哥北部.现已成为世界性的干果类树种之一。由于其种仁有优异的食疗保健价值.美国山核桃仁在国内外市场上价格一直走俏。我国早在1890年就开始陆续进行了美国山核桃的引种活动。但直到目前还尚未形成商品性生产。

  9. Remarks on paleoecology of Miocene flora in Turow sphaero-siderites

    Energy Technology Data Exchange (ETDEWEB)

    Juchniewicz, K. (Muzeum Ziemi PAN, Warsaw (Poland))

    1992-03-01

    Discusses the paleoenvironment of fossil flora in the Turow brown coal deposit (Poland), considering both botanical classification of flora and conditions of their sedimentation. Species found reveal the conditions of sideritic formations. The plants originated from shallow, stagnant water (Salvinia, Menyanthes), swampy and inshore environment (Pronephrium, Glyptostrobus) and wet forest (Quercus, Carya). A diversity of plant parts, i.e. leaves, seeds, fruits, roots, trunks and bark, facilitated their identification. A great abundance of bark and root fragments suggest they grew in situ. The scheme of processes to generate sideritic concretions with plant fossils shows that decaying plant remains were subject to bacterial activity and trapped by precipitating acidic iron carbonate in colloidal form. It is concluded that studies of sideritic concretions with plant fossils broaden knowledge of coal-forming plants since the remains are more difficult to identify in coal seams. 23 refs.

  10. Fossil plants from Romanian deposits of Bacles, Dolj District, Romania

    Directory of Open Access Journals (Sweden)

    Nicolae T̡icleanu

    2001-09-01

    Full Text Available From the Middle Romanian lacustrine deposits of the Oltenia province, the authors describe the youngest fossil flora known until now in Oltenia. The inventory of the fossil flora includes the following taxa: Taxodium dubium, ?Platanus platanifolia, Ulmus laevis, Quercus roburoides, Q. cf. muehlenbergii, Carya serraefolia, Acer cf. tricuspidatum and Salix sp. In the Bâcleş fossil flora, Glyptostrobus europaeus, which is a thermophilous and shows a high frequency in all Oltenia area till the XV-th coal seam, is absent. Consequently, having in view the high frequency of Taxodium dubium, which indicate temperate climate conditions, the other consider that the fossil flora from Bâcleş is much more younger and marks an important cooling. From palaeofloristic point of view, the study of Bâcleş fossil flora is indicative for river meadow forest and, probably, flat plain forest environments.

  11. 警根瘤蚜的生物学特性研究%Biological Characteristics of Phylloxera notabilis

    Institute of Scientific and Technical Information of China (English)

    查志刚

    2014-01-01

    The morphological and biological characteristics of Phylloxera notabilis on Carya illinoensis trees were studied through regular indoor and outdoor observation and the changing process of the insect galls were emphatically recorded. The results showed that the hibernating eggs of phylloxera notabilis started hatching in late March or early April and the main hatching period was early and mid April,and the hibernating eggs were laid from mid October. The adults of phylloxera notabilis had several forms. The fundatrices hatched from the hibernating eggs formed the first generation galls on the host young leaves. Phylloxera notabilis formed galls on the host blades and both the adults and larvae sucked sap of the blades in galls,having a serious impact on the growth of Carya illinoensis trees.%通过定期室内外观察的方法,研究了美国山核桃警根瘤蚜的形态特征和生物学习学特性,重点记录其虫瘿的变化过程。结果表明,警根瘤蚜越冬卵于3月末4月初开始孵化,4月上中旬为孵化盛期,10月中旬开始产生越冬卵。警根瘤蚜成虫有多个形态,由越冬卵孵化出的为干母,干母在寄主的幼叶上形成第一代虫瘿。警根瘤蚜在寄主叶片上形成虫瘿,成虫、幼虫均在虫瘿内吸食叶片汁液,严重影响了美国山核桃的生长。

  12. Phytophthora species recovered from the Connecticut River Valley in Massachusetts, USA.

    Science.gov (United States)

    Brazee, Nicholas J; Wick, Robert L; Hulvey, Jonathan P

    2016-01-01

    Little is currently known about the assemblage of Phytophthora species in northeastern North America, representing a gap in our understanding of species incidence. Therefore, Phytophthora species were surveyed at 20 sites in Massachusetts, with 16 occurring in the Connecticut River Valley. Many of the sampled waterways were adjacent to active agricultural lands, yet were buffered by mature floodplain forests composed of Acer, Platanus, Populus and Ulmus. Isolates were recovered with three types of baits (rhododendron leaves, pear, green pepper) in 2013 and water filtration in 2014. Overall, 457 isolates of Phytophthora were recovered and based on morphological characters and rDNA internal transcribed spacer (ITS), β-tubulin (β-tub) and cytochrome oxidase c subunit I (cox1) sequences, 18 taxa were identified, including three new species: P. taxon intercalaris, P. taxon caryae and P. taxon pocumtuck. In addition, 49 isolates representing five species of Phytopythium also were identified. Water filtration captured a greater number of taxa (18) compared to leaf and fruit baits (12). Of the three bait types rhododendron leaves yielded the greatest number of isolates and taxa, followed by pear and green pepper, respectively. Despite the proximity to agricultural lands, none of the Phytophthora species baited are considered serious pathogens of vegetable crops in the region. However, many of the recovered species are known woody plant pathogens, including four species in the P. citricola s.l. complex that were identified: P. plurivora, P. citricola III, P. pini and a putative novel species, referred to here as P. taxon caryae. An additional novel species, P. taxon pocumtuck, is a close relative of P. borealis based on cox1 sequences. The results illustrate a high level of Phytophthora species richness in the Connecticut River Valley and that major rivers can serve as a source of inoculum for pathogenic Phytophthora species in the northeast.

  13. 6种木本植物叶浸液对钉螺驱杀作用及其生殖器官解剖结构的影响%Expelling and Killing Effects of Leaf Extracts of 6 Woody Plant Species on Oncomelania hupensis and the Impact of the Extracts on the Anatomical Structures of Its Reproductive Organs

    Institute of Scientific and Technical Information of China (English)

    夏尚光; 张仪; 刘和香; 苗婷婷; 丁增发; 吴缨

    2012-01-01

    This paper studied the expelling and killing effects of leaf extracts of 6 woody plant species including Triadica sebifera, Nerium oleander, llex latifolia, Celtis julianae, Carya illinoensis and Melia azedarach on Oncomelania hupensis and the impact of the extracts on the anatomical structures of its reproductive organs. The results showed: 1. The leaf extracts of Carya illinoensis and Celtis julianae had nearly no short-time poisonous killing effects on Oncomelania hupensis and those of Melia azedaroch had the most significant poisonous killing effects, followed by Nerium oleander, Triadica sebifera and Llex lotifolia. The leaf extracts of the 6 plant species all had 100% poisonous killing effects over time. 2. The poisonous killing effects of the mixed leaf extracts of different plant species are significantly greater than those of single species leaf extracts. Under the 5-to-30min-long treatments with mixed leaf extracts of llex latifolia ~ Carya iUinoensis, Nerium oleander ~ Melia azedarach, llex latifolia x Triadica sebifera, and Celtis julianae x Triadica sebifera, the escape rate and feign death rate were 10-12% and 90-88% respectively for the treatment group of Ilex latifolia x Carya illinoensis, 0% and 100% respectively for that of Nerium oleander x Melia azedarach, 0-2% and 100-98% respectively for that of llex latifolia x Triadica sebifera, and 8-24% and 92-76% respectively for that of Celtis julianae x Triadica sebifera. 3. After the respective treatments with leaf extracts of Celtis julianae, Carya illinoensis, Triadica sebifera, Nerium oleander, Ilex latifolia and Melia azedarach for 24 hours, the anatomical structures of both the male penises and female ovaries of Oncomelania hupensis showed no significant changes compared with the control group. Consequently, mixed afforestation with llex latifolia, Triadica sebifera, Nerium oleander and Melia azedarach should be considered in the construction of schistosomasis-prevention forests, which would

  14. Do Fungi Transport 10Be During Wood Degradation?

    Science.gov (United States)

    Conyers, G.; Granger, D. E.

    2010-12-01

    Meteoric cosmogenic 10Be is increasingly used to determine erosion and soil transport rates. To calculate these rates, it is assumed that 10Be is a conservative passive tracer of soil particles. However, there is experimental evidence that beryllium is mobilized in natural soils complexed with organic acids. For example, up to 50% of beryllium can be mobilized by humic acids in soils at pH 7 (Takahashi et al., 1999). Beryllium is also known to be taken up in plants such as tobacco and vegetables (World Health Organization, 1990) at ppm levels, primarily as organic acid chelates. It is not known to what extent biological beryllium transport in the environment affects the cosmogenic 10Be budget, or how it influences beryllium mobility. In this study, we address a problem recognized early in the development of meteoric 10Be methods. It has been observed that decayed organic matter in soils and sediments contains very high concentrations of 10Be of up to 109-1010 atoms/g (Lundberg, et al., 1983). On the other hand, living trees contain much lower concentrations of 106 atoms/g (Klein et al., 1982). The driving question for this study is how 10Be becomes bound to decayed organic matter. Direct fallout seems unlikely as the residence time of organic matter in soil is too short. One possibility is that 10Be is transported by fungi. Wood-degrading fungi are known to transport and bioaccumulate metals from large areas, facilitated by acids such as oxalic acid in the fungal hyphae. To test the hypothesis that fungi transport 10Be, we analyzed both intact and fungally degraded wood of oak, hickory, and hemlock. From these data, we reached two conclusions (observations?): 1) Oak has a 10Be concentration of about 2x106 at/g, similar to that observed by Klein et al. (1982). Hickory has a significantly higher concentration of about 3x107 atoms/g, confirming observations that hickory bioaccumulates beryllium. Using these data, the inventory of 10Be in a temperate forest is expected

  15. Estudos florísticos no município de Presidente Figueiredo, Amazonas, Brasil - II: famílias Myristicaceae, Siparunaceae e Monimiaceae Floristic studies in township of Presidente Figueiredo, Amazonas, Brazil - II: families Myristicaceae, Siparunaceae and Monimiaceae

    Directory of Open Access Journals (Sweden)

    José Augusto Coelho da Silva

    2008-01-01

    Full Text Available O Município de Presidente Figueiredo, do Estado do Amazonas, Brasil, foi visitado durante três anos consecutivos (1996 a 1999, com o objetivo de obter-se amostras botânicas da área para estudos do Subprojeto "Elaboração de Revisões e Monografias Taxonômicas", com a finalidade de elaborar-se a Flórula para o Município. As coleções feitas nesse período encontram-se depositadas no acervo do Herbário do INPA e as informações gerais sobre os taxa aqui estudados foram complementadas com as obtidas das coleções feitas anteriormente por outros pesquisadores. Para a família Myristicaceae Br. R. foram identificadas 23 espécies e duas variedades, distribuídas em quatro gêneros. Destes, Iryanthera Warb. e Virola Aubl. destacaram-se pela diversidade em espécies, sendo Iryanthera ulei Warb. e Virola calophylla (Spruce Warb. var. calophylla as espécies mais coletadas. A família Monimiaceae Juss. está representada apenas pelo gênero Mollinedia Ruiz & Pavón, pela espécie M. ovata Ruiz & Pavón; já a família Siparunaceae (A. DC. Schodde encontra-se representada pelo gênero Siparuna Aubl. com oito espécies, sendo S. cristata (Poepp. & Endl. A. DC. a espécie mais coletada.The Township of Presidente Figueiredo, in the State of Amazonas, Brazil, was visited for three consecutive years, from 1996 to 1999, with the aim of acquiring botanical samples from the area, in order to carry out studies on the "Taxonomic Monographies and Revisions Preparation" Subproject for the purpose of preparing a survey of the flora. Collections pertaining to the present work are deposited at INPA's herbarium and, general information on the taxa studied here were complemented with those obtained from earlier collections conducted by other researchers. Twenty three (23 species and two varieties, distributed in four genera were identified for family Myristicaceae Br. R. Of these Iryanthera Warb. and Virola Aubl. stood out on account of their species diversity

  16. 毛药山茶——中国广东山茶属一新种%A new species of the genus Camellia from Guangdong, China

    Institute of Scientific and Technical Information of China (English)

    叶创兴; 郑新强

    2001-01-01

    @@毛药山茶新种图1 Camellia renshanxiangiae C. X. Ye et X. Q. Zheng, sp. nov.* (Subgen. Metacamellia H. T. Chang, Sect. Eriandria Cohen-Stuart). Fig. 1 Species C. craterae H. T. Chang et C. trigonocarpae H. T. Chang affinis, sed illa floribus rubris (teste notula collectoris), bracteolis sepalisque utrinque flavo-pubescentibus differt, haec bracteolis sepalisque utrinque pubescentibus differt, ab quibus differt antheris pilosis. Frutex, circiter 3 m altus; gemmae albo-puberulae; rami graciles; ramuli hornotini cinereo-brunnei pubescentes, demum glabrescentes. Folia tenuiter coriacea, oblonga vel ovata vel anguste ovata, (2.7~) 4~7.5 cm longa, (1.3~) 1.7~3 cm lata, apice longe caudata, caudis 1.5~2 cm longis, basi rotundata vel late cuneata, margine serrulata, dentibus 2~3 mm remotis, caudis et basin versus 1/3 integra, supra in sicco atro-viridia, glabra, costis prominentibus pubescentibus, subtus pallide viridia parce pilosa, glabrescentia, costis prominentibus, dense pubescentibus, nervis lateralibus irregulariter circiter 9-jugis, utrinque inconspicuis; petioli 2~3 mm longi, pubescentes. Flores albi fragrantes, in axillis 3~8 caespitosi; pedicelli 1.5 mm longi, breviter puberuli, apicem versus crassi; bracteolae circ. 6, persistentes, inferiores 3 late triangulares, 1~1.5 mm altae, superiores 3 majores, semiorbiculares vel orbiculares, 2~2.5 mm altae, extus glabrae vel interdum puberulae, intus glabrae; sepala 5, persistentia, inaequalia, exteriora 3 mm longa et lata, intimum 6 mm altum, 5 mm latum, omnia extus glabra vel interdum puberula, intus glabra, margine scariosa; corolla basi in tubum 1 mm longum tubo staminum adnatum connata; petala 5~7, extremum conchiforme, concavum, viridulum, 7 mm longum, 5 mm latum, apice rotundatum, cetera obovata usque late obovata, 9~15 mm longa, 6~9 mm lata, extus glabra vel interiora extus puberula, intus glabra; stamina 2-seriata, 7~10 mm longa, filamentis glabris, exterioribus in tubum 4

  17. Estrutura de um fragmento florestal no Engenho Humaitá, Catende, Pernambuco, Brasil Structure of a forest fragment at Humaitá sugar mill, Catende, PE, Brazil

    Directory of Open Access Journals (Sweden)

    Francisco J. P. Guimarães

    2009-12-01

    Full Text Available Avaliou-se, neste trabalho, a estrutura de um fragmento florestal antropizado denominado Mata das Galinhas, Engenho Humaitá, Catende, Pernambuco, e se utilizaram, para avaliar a composição florística e a estrutura fitossociológica, 14 parcelas de 10 x 25 m a fim de amostrar os indivíduos arbóreos com circunferência a 1,30 m do solo (CAP ≥ 10 cm. Foram estimados, então, densidade, frequência e dominância e valor de importância (VI e o índice de Shannon, além de registrados 438 indivíduos pertencentes a 63 espécies, 45 gêneros e 29 famílias. As famílias de maior importância foram Mimosaceae, Moraceae, Anacardiaceae e Lecythidaceae e as espécies com maiores valores de VI, foram Brosimum discolor, Parkia pendula, Eschweilera ovata, Thyrsodium spruceanum, Tapirira guianensis, Protium heptaphyllum, Casearia arborea, Helicostylis tomentosa, Dialium guianense, Schefflera morototoni, Himatanthus phagedaenicus e Cupania racemosa. Quando observado isoladamente, conclui-se que o fragmento estudado possui pouca relevância; entretanto, se considerado conjuntamente com outros fragmentos da área, sua diversidade é significativa o que justificaria esforços para sua conservação e manejo.The structure of a forest fragment, known as "Mata das Galinhas" at Humaitá sugar mill, Catende, Pernambuco, Brazil was evaluated. To evaluate the floristic composition and the phytosociological structure under anthropic action 14 plots of 10 x 25 m were used to sample the arboreal individuals with circumference at breast height (CBH ≥ 10 cm. The density, frequency, and dominance, the importance value (IV and the Shannon's index were calculated. A total of 438 individuals distributed into 63 species, 45 genera and 29 families were recorded. The families of larger importance in the study were Mimosaceae, Moraceae, Anacardiaceae and Lecythidaceae. The species with larger values of IV were Brosimum discolor, Parkia pendula, Eschweilera ovata

  18. 大宁河春季浮游藻类"水华"及其营养限制%SPRING WATER BLOOMS OF PHYTOPLANKTON IN DANING RIVER AND ITS NUTRIENT LIMITATION

    Institute of Scientific and Technical Information of China (English)

    周广杰; 况琪军; 胡征宇

    2007-01-01

    报道了大宁河2004年春季和2005年春季浮游藻类的种类组成、垂直分布、数量、生物量以及C含量的调查结果,并应用多样性指数、丰富度指数和均匀性指数对其水质进行了综合评价;对大宁河蓄水后出现的富营养化现象和春季发生"水华"的原因进行了探讨,同时提出了控制水体富营养化的建议.2004年春季,藻类优势种为美丽星杆藻(Asterionella formosa)、卵形隐藻(Cryptomonas ovata)、里海小环藻(Cyclotella caspia)和新星形冠盘藻(Stephanodiscus neoastraea);2005年春季的优势种为实球藻(Pandorina morum)、空球藻(Eudorina elegans)、里海小环藻(Cyclotella caspia)和卵形隐藻(Cryptomonas ovata).2004年和2005年的细胞密度、生物量和C含量分别平均为171.1×105cells/L,12.2 mg/L,1732.2μg C/L和113.1×105cells/L,10.1 mg/L,1395.9μg C/L.对2005年春季熊猫洞采样点"水华"水进行生物测试的结果表明,P是藻类生长的限制因子.研究认为,控制大宁河沿岸带生活污水的排放量并减少由于农田地表径流所带来的营养输入是防止该河加重富营养化和发生"水华"的关键.

  19. Seasonal dynamic of the occurrence of the gregarines infection of Harpalus rufipes (Coleoptera, Carabidae in agroecosystem

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    D. Y. Reshetnyak

    2015-08-01

    Full Text Available Relationships in the “parasite-host” system are closely interrelated and occur at all levels from the molecular to behavioral and population ones. There are two models of realization of these relations. The first case is when the parasites are uniformly distributed in the host population. High extensiveness of invasion is accompanied by its low intensity. The second case is when a part of host population is infected with parasites, but the negative impact is manifested to the maximum extent. Invasion of the ground beetle Harpalus rufipes (De Geer, 1774, dwelling in sweet corn agroecosystems located in the vicinity of Dnipropetrovsk near Doslidnoe village, by several gregarines species is investigated in this study. H. rufipes is an abundant, ubiquitous species, living in extremely wide range of terrestrial ecosystems, with especially high populations inhabiting anthropogenically transformed environments. H. rufipes has a wide range of feeding. This species is distributed in the Central and Eastern Europe, and introduced to North America. Gregarines were found in the intestines of 20 individuals of H. rufipes from 190 (10.5%: Gregarina ovata Dufour, 1828, G. steini Berndt, 1902, G. amarae (Hammerschmidt, 1839 Frantzius, 1848, Clitellocephalus ophoni (Tuzet and Ormieres, 1956 Clopton, 2002, Torogregarina sphinx Clopton, 1998, Gigaductus macrospora Filipponi, 1948 and G. elongatus (Moriggi, 1943 Filipponi, 1948. There is high level of infestation of C. ophoni and G. steini. At the same time, not more than three species of the gregarines were localized in the beetle body. Seasonal dynamic of occurrence of the gregarines is as follows. Maximal indices of occurrence are found at the end of August (22.2% and minimal ones at the end of June (4.8%. The highest total number of gregarines (383 ind. is recorded at the end of August, the lowest one is fixed at the beginning of September (33 ind.. Indices of gregarine species dominance are as follows

  20. Composition of eggs and larvae of fish and macrogelatinious zooplankton in Sinop Region (The Central Black Sea during 2002.

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    Ahmet E. Kıdeyş

    2015-12-01

    Full Text Available Bu araştırmada 2002 yılında Orta Karadeniz’in Sinop Bölgesi’ndeki makrojelimsi organizma (Aurelia aurita, Pleurobranchia pileus, Mnemiopsis leidyi ve Beroe ovata türleri ile balık yumurta ve larvalarının bolluğu ve dağılımının tespit edilmesi amaçlanmıştır. Bunun için bölgede seçilen 3 istasyonda, dikey ve yatay olarak plankton çekimleri yapılmıştır. Araştırmada ktenoforlardan Mnemiopsis leidyi Ocak-Eylül, Beroe ovata Ağustos-Aralık periyotlarında görülebilmiştir. Aurelia aurita ve Pleurobranchia pileus türleri ise 2002 yılında geniş dağılım göstermişlerdir. İhtiyoplankton örneklerinden toplam 857 adet yumurta ve 150 adet larva toplanmış olup 8 familyaya ait 8 tür tayin edilmiştir. Toplam yumurtanın %77.7’sini Sprattus sprattus phalericus, %10’unu Engraulis encrasicolus ponticus ve %10’unu da Mullus barbatus türüne ait yumurtalar oluşturmuştur. Toplam larvanın %51’ini S. s. phalericus, %15’ini Blennidae familyası ve %13’ünü de E. e. ponticus türleri oluşturmuştur. İhtiyoplankton tür sayısı ve bolluğu 1999-2000 yılından daha düşük bulunmuştur. Sıcaklık değerlerinin yükseldiği dönemlerde jelimsi organizma ile balık yumurta ve larva miktarlarının arttığı belirlenmiştir. Kısa süreli örneklemelerde (bir yıl boyunca jelimsi organizmalarla balık yumurta ve larvaları arasındaki net bir ilişki bulunamamıştır (p>0.05