WorldWideScience

Sample records for bonsai

  1. Bonsai: an event-based framework for processing and controlling data streams.

    Science.gov (United States)

    Lopes, Gonçalo; Bonacchi, Niccolò; Frazão, João; Neto, Joana P; Atallah, Bassam V; Soares, Sofia; Moreira, Luís; Matias, Sara; Itskov, Pavel M; Correia, Patrícia A; Medina, Roberto E; Calcaterra, Lorenza; Dreosti, Elena; Paton, Joseph J; Kampff, Adam R

    2015-01-01

    The design of modern scientific experiments requires the control and monitoring of many different data streams. However, the serial execution of programming instructions in a computer makes it a challenge to develop software that can deal with the asynchronous, parallel nature of scientific data. Here we present Bonsai, a modular, high-performance, open-source visual programming framework for the acquisition and online processing of data streams. We describe Bonsai's core principles and architecture and demonstrate how it allows for the rapid and flexible prototyping of integrated experimental designs in neuroscience. We specifically highlight some applications that require the combination of many different hardware and software components, including video tracking of behavior, electrophysiology and closed-loop control of stimulation.

  2. Creation of Lingnan Bonsai%岭南盆景创作浅谈

    Institute of Scientific and Technical Information of China (English)

    谢荣耀

    2015-01-01

    Lingnan bonsai art has its own skill requirements and laws. The creative processes generally include selection, design (composition), cut, modeling and so on. Every process has specific requirements and rules. Only by understanding and mastering these requirements and rules, people can create a successful work.%岭南盆景艺术创作有自己的技艺要求和规律。其创作过程一般包括选材、构思(构图)、剪裁、造型等多个环节。每个环节和过程又有特定的要求和规则。只有掌握好这些要求和规则,才能创作出一盆成功的作品。

  3. Research on Winter Sweet Arrangement and Bonsai Making%蜡梅插花及盆景制作研究

    Institute of Scientific and Technical Information of China (English)

    王淼博

    2015-01-01

    Winter sweet is China’s traditional famous flowers,whose arrangement and bonsai making that are deeply loved by the public and of significant value.In this paper,according to the field investigation and literature analysis,the arrangement of winter sweet can be summa-rized into three forms (single arrangement,bunch arrangement and pair arrangement)and three commonly used methods of bonsai making (the little potted winter sweet,the molding winter sweet,and the old stake winter sweet).Finally,the author generalizes existing problems and the corresponding recommendations,such as by using ant staling agent to increase the time bound of winter sweet bonsai.The paper can give some references for winter sweet arrangement and bonsai making.%蜡梅(wintersweet)是中国的传统名花,蜡梅插花及蜡梅盆景深受大众喜爱,具有较高的研究价值。通过对蜡梅插花及蜡梅盆景实地调研和文献分析,归纳出蜡梅插花的三种形式为单插、束插和配插,蜡梅盆景有小盆栽蜡梅、造型蜡梅和古桩蜡梅三种类型,针对蜡梅插花花期短等问题,提出了研制增加蜡梅插花时限的制剂等相应措施,也提出了蜡梅盆景资源合理利用的建议,对蜡梅插花和盆景制作有一定的借鉴指导作用。

  4. "盆景式"微型绿地的应用与创作%Creation and design about "Bonsai Style" micro greenland

    Institute of Scientific and Technical Information of China (English)

    王丽霞; 肖建忠; 向地英; 邸葆

    2009-01-01

    Micro greenland is a absolutely necessary composing component of the urban landscape and greenland, and plays an important role in urban greening. Now micro greenland embodies a lot of new characteristics no matter the forms or the contents, and shows diversity development trend. It is a novel method which designs micro greenland with design method of bonsai, and it combines the advantages of the garden art and bonsai art, which has inheritance and development to traditional bonsai art in our country. It becomes the research direction about how to refer the artistic techniques of bonsai art, and makes it combine better with garden landscaping.%微型绿地是城市园林绿地中必不可少的一项重要组成部分,在城市绿化中扮演着重要的角色.如今微型绿地无论从功能上还是形式上都体现许多新的特点,并呈现多元化的发展趋势.借鉴盆景手法创作微型绿地就是其中一种新颖的创作微型绿地的方法,它同时结合中国盆景艺术和园林艺术的优势,是对我国盆景艺术的继承与发展,也是园林造景的创新.介绍了如何借鉴盆景创作的艺术手法,使之更好的与园林造景相结合.

  5. LimsPortal and BonsaiLIMS: development of a lab information management system for translational medicine

    Directory of Open Access Journals (Sweden)

    Afzal Vackar

    2011-05-01

    Full Text Available Abstract Background Laboratory Information Management Systems (LIMS are an increasingly important part of modern laboratory infrastructure. As typically very sophisticated software products, LIMS often require considerable resources to select, deploy and maintain. Larger organisations may have access to specialist IT support to assist with requirements elicitation and software customisation, however smaller groups will often have limited IT support to perform the kind of iterative development that can resolve the difficulties that biologists often have when specifying requirements. Translational medicine aims to accelerate the process of treatment discovery by bringing together multiple disciplines to discover new approaches to treating disease, or novel applications of existing treatments. The diverse set of disciplines and complexity of processing procedures involved, especially with the use of high throughput technologies, bring difficulties in customizing a generic LIMS to provide a single system for managing sample related data within a translational medicine research setting, especially where limited IT support is available. Results We have designed and developed a LIMS, BonsaiLIMS, around a very simple data model that can be easily implemented using a variety of technologies, and can be easily extended as specific requirements dictate. A reference implementation using Oracle 11 g database and the Python framework, Django is presented. Conclusions By focusing on a minimal feature set and a modular design we have been able to deploy the BonsaiLIMS system very quickly. The benefits to our institute have been the avoidance of the prolonged implementation timescales, budget overruns, scope creep, off-specifications and user fatigue issues that typify many enterprise software implementations. The transition away from using local, uncontrolled records in spreadsheet and paper formats to a centrally held, secured and backed-up database brings the

  6. LimsPortal and BonsaiLIMS: development of a lab information management system for translational medicine

    Science.gov (United States)

    2011-01-01

    Background Laboratory Information Management Systems (LIMS) are an increasingly important part of modern laboratory infrastructure. As typically very sophisticated software products, LIMS often require considerable resources to select, deploy and maintain. Larger organisations may have access to specialist IT support to assist with requirements elicitation and software customisation, however smaller groups will often have limited IT support to perform the kind of iterative development that can resolve the difficulties that biologists often have when specifying requirements. Translational medicine aims to accelerate the process of treatment discovery by bringing together multiple disciplines to discover new approaches to treating disease, or novel applications of existing treatments. The diverse set of disciplines and complexity of processing procedures involved, especially with the use of high throughput technologies, bring difficulties in customizing a generic LIMS to provide a single system for managing sample related data within a translational medicine research setting, especially where limited IT support is available. Results We have designed and developed a LIMS, BonsaiLIMS, around a very simple data model that can be easily implemented using a variety of technologies, and can be easily extended as specific requirements dictate. A reference implementation using Oracle 11 g database and the Python framework, Django is presented. Conclusions By focusing on a minimal feature set and a modular design we have been able to deploy the BonsaiLIMS system very quickly. The benefits to our institute have been the avoidance of the prolonged implementation timescales, budget overruns, scope creep, off-specifications and user fatigue issues that typify many enterprise software implementations. The transition away from using local, uncontrolled records in spreadsheet and paper formats to a centrally held, secured and backed-up database brings the immediate benefits of

  7. Study on the Purification and Tolerance Ability of Bonsai Aloe and Snake Plant to Formaldehyde in Indoor Air%盆栽芦荟和虎皮兰对室内空气甲醛净化及耐受能力的研究

    Institute of Scientific and Technical Information of China (English)

    郭铭伟; 龚萍; 陶荣琴; 殷姿; 梁维君

    2012-01-01

    目的 研究及比较盆栽芦荟和虎皮兰对室内空气甲醛的净化及耐受能力. 方法 选择芦荟、虎皮兰两种常见、易护理且经济的盆栽植物进行三个方面的实验,即植物吸收甲醛能力的判断、不同植物吸收甲醛能力大小的比较、植物对甲醛耐受能力的研究.测得实验前后甲醛的变化量来反映植物对甲醛的净化效果,通过观察实验组植物叶片是否出现斑点、叶片枯萎、叶片坏死情况来反映绿色植物对甲醛的耐受性. 结果 实验组的甲醛浓度比对照组的甲醛浓度明显降低(P<0.01),且虎皮兰组甲醛浓度低于芦荟组(P<0.05);实验组叶片斑点增加、叶尖变黄、叶片变黄、叶片枯死等发生情况均高于对照组(P<0.05),且对虎皮兰的损伤大于芦荟(P<0.05). 结论 芦荟和虎皮兰均能净化室内空气污染物甲醛;芦荟和虎皮兰净化甲醛的能力有差异,虎皮兰比芦荟净化甲醛的能力强;甲醛对盆栽绿色植物有损伤,虎皮兰比芦荟的耐受性低.%Objective To study and compare the purification and tolerance ability of Bonsai Aloe and Snake Plant to formaldehyde in indoor air. Methods Bonsai Aloe and Snake Plant were studied and compared on their abilities to absorb and toi-erate formaldehyde in indoor air. Their purification effects were studied by detecting the formaldehyde in indoor air before and after the plants were placed in the room, with a room without plant set as the control. Their tolerance ability to formaldehyde was determined by observing the changes of the leaves, such as appearing of spots, blight, and necrosis. Results The formaldehyde concentrations in the indoor air of the experimental groups after plants placement were significantly lower than that of the control group (P<0.01), and the concentration in the Snake Plant group was statistically lower than that in the Bonsai Aloe group (P<0. 05). More spotted leaves, yellow leaves and necrotic leaves

  8. Bonsai: A GPU Tree-Code

    CERN Document Server

    Bédorf, Jeroen; Zwart, Simon Portegies

    2012-01-01

    We present a gravitational hierarchical N-body code that is designed to run efficiently on Graphics Processing Units (GPUs). All parts of the algorithm are executed on the GPU which eliminates the need for data transfer between the Central Processing Unit (CPU) and the GPU. Our tests indicate that the gravitational tree-code outperforms tuned CPU code for all parts of the algorithm and show an overall performance improvement of more than a factor 20, resulting in a processing rate of more than 2.8 million particles per second.

  9. 丽格海棠的盆花生产技术%The bonsai producing technology of Begonia×Elatior

    Institute of Scientific and Technical Information of China (English)

    刘刚; 陈锦忠

    2005-01-01

    阐述了新优室内中小型盆花丽格海棠的植物学特性及生态习性,通过近3年的引种栽培研究,结合天水实际,总结出了丽格海棠种苗生产及盆花栽培管理的主要技术.

  10. Sistema de agrupamiento y búsqueda de contenidos de la blogosfera de la ESPOL, utilizando hadoop como plataforma de procesamiento masivo y escalable de datos (bonsai)

    OpenAIRE

    Avendaño Sudario, Allan Roberto

    2009-01-01

    En la actualidad, la proliferación de las redes sociales en la Web permite crear redes de contactos confiables y establecer espacios de colaboración digital. Estos espacios han proporcionado nuevas estrategias para la difusión de los contenidos que se generan en empresas o instituciones educativas. En este contexto, en la Escuela Superior Politécnica del Litoral se ha adaptado el mecanismo de publicación de información en blogs para la conformación de una red digital compuesta por los miem...

  11. Scientific Opinion on a technical file submitted by the Japanese Authorities to support a derogation request from the EU import requirements for bonsai and topiary trees that are host plants of Anoplophora chinensis

    DEFF Research Database (Denmark)

    Baker, R.; Candresse, T.; Dormannsné Simon, E.

    2010-01-01

    Following a request from the EU Commission, the EFSA PLH Panel conducted a scientific opinion on risk analysis and supporting documents provided by APHIS/USDA in support of the request to remove the Union's plant health import requirement that citrus fruit imported into the EU be sourced from...... groves where, since the beginning of the last cycle of vegetation no symptoms of citrus canker were observed, neither in their vicinities. The PHL Panel concluded that the transmission of Xanthomonas citri subsp. citri (Xcc) on asymptomatic citrus fruit was more likely when the fruit were collected from...... infested than from non-infested areas and groves. Symptomatic fruit carries more Xcc cells than asymptomatic fruit and the packinghouse disinfectant treatments do not achieve the eradication of Xcc. The application of management option 2 (i.e. ‘allow distribution of all types and varieties of commercially...

  12. 宁波地区主要出口盆景及盆栽线虫种类调查及防控对策%The Investigation on Types of Nematode and Main Export Bonsai in Ningbo Regions and Preventative Measures

    Institute of Scientific and Technical Information of China (English)

    王江岭; 顾建锋; 陈先锋; 焦猛; 李玉祥

    2010-01-01

    [目的]摸清宁波地区盆景线虫种类,以有针对性地进行线虫防控.[方法]2005~2008年,对宁波市3家主要盆景出口企业及周边的29种主要出口盆景及盆栽植物的根际土壤、栽培介质和根组织进行线虫种类调查,共采集样品142份.[结果]分离并鉴定线虫12属,发现了剑线虫属(Xiphinema sp.)、长针属(Longidorus sp.)、短体属(Pratylenehus sp.)、毛刺属(Trichodorus sp.)和拟毛刺属(Paratrichodorus sp.)等检疫性线虫,未发现根结线虫属.提出了线虫防控措施.[结论]宁波盆景线虫种类较多,盆景出口前需要综合治理,以确保顺利出口.

  13. An Evaluation of OCLC's EPIC as a Resource for Subject Access to Videos.

    Science.gov (United States)

    Palmer, Joseph W.

    1992-01-01

    An examination of OCLC's EPIC service and standard video reference tools revealed that EPIC was more comprehensive in finding video titles on the popular or specialized topics of bonsai, genealogy, karate, and holography, because of its keyword searching ability on the massive OCLC database. (11 references) (EA)

  14. 24.77 Pflops on a Gravitational Tree-Code to Simulate the Milky Way Galaxy with 18600 GPUs

    CERN Document Server

    Bédorf, Jeroen; Fujii, Michiko S; Nitadori, Keigo; Ishiyama, Tomoaki; Zwart, Simon Portegies

    2014-01-01

    We have simulated, for the first time, the long term evolution of the Milky Way Galaxy using 51 billion particles on the Swiss Piz Daint supercomputer with our $N$-body gravitational tree-code Bonsai. Herein, we describe the scientific motivation and numerical algorithms. The Milky Way model was simulated for 6 billion years, during which the bar structure and spiral arms were fully formed. This improves upon previous simulations by using 1000 times more particles, and provides a wealth of new data that can be directly compared with observations. We also report the scalability on both the Swiss Piz Daint and the US ORNL Titan. On Piz Daint the parallel efficiency of Bonsai was above 95%. The highest performance was achieved with a 242 billion particle Milky Way model using 18600 GPUs on Titan, thereby reaching a sustained GPU and application performance of 33.49 Pflops and 24.77 Pflops respectively.

  15. Suitable utilization of woody plants for hibitation on Mars

    Science.gov (United States)

    Tomita-Yokotani, Kaori; Baba, Keiichi; Suzuki, Toshisada; Kimura, Shunta; Sato, Seigo; Katoh, Hiroshi; Abe, Yusuke; Katayama, Takeshi

    2016-07-01

    We have been investigating the usefulness of woody plants for habitation on Mars. During our research, we have found that woody plants have several properties which can be utilized for therapy and materials for enrage and construction even on Mars. Japanese people traditionally believe that "Bonsai" have therapeudic properties. Trees can become carbon fuel which can be used as energy on Mars. Tree materials could be used as a tool in closed bio-ecosystems such as for the purification and/or separation of solutions in an environment in space. Here, we will show some results of their abilities, the water leakage and vacuum seal test, separation of solutions using carbon materials made from trees. At the initiation of this research, we named the trees used as material for the experiment related to space environments "CosmoBon", small bonsai tree. To establish our research, as the first step, we will try to do the experiment using "CosmoBon".

  16. My Cares in the World

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    1 I had lived at Shuiguo Lake in Wuhan for several years, when one day a wasp flew on my balcony. I was sitting there, reading my newspaper. Because I had been stung by wasps many times during my childhood, I had a lingering fear of wasps. I hurried to cover my face with the newspaper, but the wasp flew’ unharmed onto my bonsai. I looked at it quietly and it also looked at me. Then it stuck up its tail and lowered its head to drink from the pot. Once it

  17. Performance analysis of parallel gravitational $N$-body codes on large GPU cluster

    CERN Document Server

    Huang, Siyi; Berczik, Peter

    2015-01-01

    We compare the performance of two very different parallel gravitational $N$-body codes for astrophysical simulations on large GPU clusters, both pioneer in their own fields as well as in certain mutual scales - NBODY6++ and Bonsai. We carry out the benchmark of the two codes by analyzing their performance, accuracy and efficiency through the modeling of structure decomposition and timing measurements. We find that both codes are heavily optimized to leverage the computational potential of GPUs as their performance has approached half of the maximum single precision performance of the underlying GPU cards. With such performance we predict that a speed-up of $200-300$ can be achieved when up to 1k processors and GPUs are employed simultaneously. We discuss the quantitative information about comparisons of two codes, finding that in the same cases Bonsai adopts larger time steps as well as relative energy errors than NBODY6++, typically ranging from $10-50$ times larger, depending on the chosen parameters of the...

  18. 古代江南文人的竹审美与园竹景观塑造%A Preliminary Approach to Bamboo Aesthetic and Bamboo Garden Landscape Built by Men of Letters in Jiangnan in Ancient China

    Institute of Scientific and Technical Information of China (English)

    张蕾

    2015-01-01

    不同时代、不同人群对美的感受不一样,构建景观的能力和方式也不同。古代尤其是宋元时期在江南地区生活的文人士大夫依赖当地的水、竹生态,通过对庭竹、盆竹的欣赏和培育,以及竹画等方式,积极地创作出以竹为审美对象的园林生境,这个传统成为中国古典园林文化的重要物质和精神来源。%In different times,people from different social groups do not share the same sense of beauty or have equal ability to construct landscape.In Song and Yuan Dynasties,numerous men of letters, many of whom were literati,began to create garden habitats with bamboos as aesthetic objects in Jiangnan region.They showed their appreciation to bamboos by cultivating court bamboos and penzhu (bamboo bonsai)and drawing bamboos in paintings,which usually satisfied their spiritual enjoyment of the Jiangnan natural landscape.As part of the Chinese classical garden culture,this kind of activity offered both material and cultural resources to it.

  19. Epigenetic Regulation of Intronic Transgenes in Arabidopsis

    Science.gov (United States)

    Osabe, Kenji; Harukawa, Yoshiko; Miura, Saori; Saze, Hidetoshi

    2017-01-01

    Defense mechanisms of plant genomes can epigenetically inactivate repetitive sequences and exogenous transgenes. Loss of mutant phenotypes in intronic T-DNA insertion lines by interaction with another T-DNA locus, termed T-DNA suppression, has been observed in Arabidopsis thaliana, although the molecular basis of establishment and maintenance of T-DNA suppression is poorly understood. Here we show that maintenance of T-DNA suppression requires heterochromatinisation of T-DNA sequences and the nuclear proteins, INCREASED IN BONSAI METHYLATION 2 (IBM2) and ENHANCED DOWNY MILDEW 2 (EDM2), which prevent ectopic 3′ end processing of mRNA in atypically long introns containing T-DNA sequences. Initiation of T-DNA suppression is mediated by the canonical RdDM pathway after hybridisation of two T-DNA strains, accompanied by DNA hypermethylation of T-DNA sequences in the F1 generation. Our results reveal the presence of a genome surveillance mechanism through genome hybridisation that masks repetitive DNAs intruding into transcription units. PMID:28338020

  20. Chemical Constituents from the Branches of Carpinus turczaninowii with Antioxidative Activities

    Energy Technology Data Exchange (ETDEWEB)

    Ko, Ha Na; Kim, Jung Mi; Bu, Hee Jung; Lee, Nam Ho [Jeju National Univ., Jeju (Korea, Republic of)

    2013-08-15

    Eight compounds were identified in ethanol extracts prepared from the branches of C. turczaninowii. The compounds, besides 5 and 6, were isolated for the first time from this woody plant. Pyracrenic acid (4) and quercitrin (8) showed potent DPPH free radical scavenging activities with SC{sub 50} values of 55.2 and 62.4 μM, respectively, where ascorbic acid (SC{sub 50} 43.5 μM) was used as a positive control. Compounds 4, 5, 6 and 8 showed strong activities in ABTS{sup +} radical scavenging assay, with SC{sub 50} values of 34.1, 42.1, 45.8 and 29.6 μM, respectively. These activities are comparable in potency to ascorbic acid (SC{sub 50} 31.6 μM). Based on these results, C. turczaninowii extracts are expected to be useful antioxidative agents, potentially applicable in food or cosmetic industries, based on the results of further studies. Korean hornbeam Carpinus turczaninowii is a deciduous woody plant belonging to the family Betulaceae. This flora is endemic to Korea, and can reach a height of 15 m. In the autumn, the fallen leaves of C. turczaninowii display a beautiful orange-red color and the tree is commonly used for bonsai in Korea. The wood is very hard, dense and fine textured, and has been used for making agricultural tools and furniture. Previous chemical investigation on this plant indicated only the existence of flavonoids such as naringenin and quercetin glycosides from the leaves. We have recently reported the isolation diarylheptanoids possessing anti-inflammatory activities from the ethanol extract of C. turczaninowii.

  1. Study on the History and Garden Art of the East Lake in Shaoxing%绍兴东湖造园历史及园林艺术研究

    Institute of Scientific and Technical Information of China (English)

    王欣; 陈明明; 张斌

    2013-01-01

    绍兴东湖位于绍兴城东箬篑山北麓,清末学者陶浚宣回乡归隐,利用开山留下的残山剩水,把自然和人文熔于一炉,建成“水石大盆景”式的舟游园林.并在湖上建学堂,是绍兴近代教育和思想革新的重要舞台.除讨论东湖园林各时期历史沿革之外,还从构思立意、谋篇布局、建筑与花木、景因人胜4方面讨论园林艺术,揭示东湖园林的艺术人文价值.%The East Lake lies at the north foot of Mt. Ruokui in the east of Shaoxing. The famous scholar Tao Junxuan in the Qing Dynasty took advantage of the terrain and made the lake a bonsai-like boat-taking landscape in which natural and humanistic elements were both embodied. He also set up schools beside the lake, providing an important stage for modern education and ideological innovation in Shaoxing. Besides the reflection on the East Lake landscape in different historical periods, the paper explores the garden art from four aspects, i.e., conception, layout, buildings and plants, and human elements. It also points out the artistic and humanistic value of the East Lake landscape.

  2. Economics of Distance and Online Learning Theory, Practice and Research

    Directory of Open Access Journals (Sweden)

    reviewed by TOJDE

    2009-10-01

    Learning: The Role of Embedded Learning inCreating a Competitive Workforce, Jade Nguyen Strattner and Diana OblingerSECTION SIX: OPEN AND VIRTUAL SCHOOLINGChapter 13: Open Basic Education: Organizational Structures, Costs and Benefits,Palitha EdirisinghaSECTION SEVEN: RESEARCH AND DEVELOPMENTChapter 14: From Baobab to Bonsai: Revisiting Methodological Issues in the Costs andEconomics of Distance Education and Distributed e-Learning, Thomas HülsmannSECTION EIGHT: EPILOGUEChapter 15: Implications for Planning and Management of Distance and On-lineLearning, William Bramble and Santosh Panda

  3. First report of the land planarian Diversibipalium multilineatum (Makino & Shirasawa, 1983) (Platyhelminthes, Tricladida, Continenticola) in Europe.

    Science.gov (United States)

    Mazza, Giuseppe; Menchetti, Mattia; Sluys, Ronald; Solà, Eduard; Riutort, Marta; Tricarico, Elena; Justine, Jean-Lou; Cavigioli, Luca; Mori, Emiliano

    2016-01-26

    Introduction of alien species may significantly affect soil ecosystems, through predation or disruption of components of native ecosystems (Winsor et al. 2004; Álvarez-Presas et al. 2014; Justine et al. 2014). Land planarians have been reported as alien species in soils throughout the world and, among those, some species are considered to be successful invaders, e.g. Platydemus manokwari de Beauchamp, 1963, Arthurdendyus triangulatus (Dendy, 1894), Bipalium adventitium Hyman, 1943, Bipalium kewense Moseley, 1878 and Dolichoplana striata Moseley, 1877 (Winsor et al. 2004; Álvarez-Presas et al. 2014; Justine et al. 2014, 2015). Soil moisture status seems to be an important element for their successful invasion (Fraser & Boag 1998). In Europe at least 18 species of alien land planarians have been recorded since now and some of them are considered as invasive ones, e.g. P. manokwari (cf. Justine et al. 2014). Although the alien land planarian B. kewense has been reported to occur in many greenhouses in Italy (Bello et al. 1995), no data are available on its establishment and/or impact on natural environments. On 28th September 2014, 20 specimens (~1 individual/m2) of the land planarian Diversibipalium multilineatum (Makino & Shirasawa, 1983) (Fig. 1), native to Japan, were collected under pots, branches and plastic materials in a private garden located in the center of Bologna (Emilia Romagna, Central Italy), near the urban park Giardini Margherita (44°29' N, 11°21' E; WGS84). Thirty plant species (both indigenous and alien), mainly cultivated as bonsai (e.g. Lagerstroemia indica L., Juniperus procumbens (Siebold ex Endl.) Miquel), were present in this shady, wet garden (25 m2). Between March 2014 and June 2015, 70 more specimens of D. multilineatum were collected at the same site, mainly at dusk and dawn after rain. Reproduction by fission and regeneration processes were observed in several of those specimens, which were kept for some time in captivity. A specimen

  4. Screening,identification and antibacterial activity of antagonistic bacteria FC12-05 against phytophthora root rot of tomato%番茄疫霉根腐病拮抗细菌FC12-05的筛选、鉴定及其抑菌活性初探

    Institute of Scientific and Technical Information of China (English)

    冯志珍; 李金岭; 陈太春; 马志远; 段军娜; 安德荣

    2012-01-01

    【Objective】 The strong effective biocontrol bacteria for phytophthora root rot of tomato were selected from greenhouse tomato farming soil for several years.【Method】 Random samples were conducted from greenhouse tomato farming soil for many years,separated the bacteria used plant dilute,selected directionally with several fungal pathogens such as P.capsici Leonian,Botrytis cirerea,Phytophthora nicotianae,Bipolaris sorokiniana,Fusarium oxysporum f.sp.vasinfectum,Pyricularia oryzae as the indicator bacteria;We identified the antagonistic bacteria based on morphological,physiological and biochemical characteristics,and 16S rDNA phylogenetic analysis;determined the effect of the mycelial configurationthe of pathogenic fungi,the mycelium growth of pathogenic fungi,the spore germination on pathogenic fungi spores broth germination and the control efficacy of bonsai experiment in greenhouse with the sterile fermentation of antagonistic bacteria.Then we deposited the sterile fermentation of antagonistic bacteria with ammonium sulfatem,which saturation concentration respectively was 10%,20%,25%,30%,35%,40%,50%,60%,70%,80%,90% and 100%,and tested the antifungal activity of ammonium sulfate precipitation of the antagonists.【Result】 253 strains bacterium were isolated from 30 soil samples,FC12-05,a strong effect of bacterial on Phytophthora capsici Leonian,Botrytis cirerea,Phytophthora nicotianae,Bipolaris sorokiniana,Fusarium oxysporum f.sp.vasinfectum,Pyricularia oryzae;The strain FC12-05 was identified as Bacillus siamensis.The fermented liquid of strain FC12-05 had great inhibition effect on mycelium growth of P.capsici Leonian and Botrytis cinerea,the inhibition rate of mycelium growth was 95.02% and 92.43%;the EC50 values was 10.14 and 10.78 mL/L;the inhibition rate of spore germination was 94.60% and 92.43%;the EC50 values was 2.09 and 2.53 mL/L;the control effect of FC12-05 strain on phytophthora root rot of tomato was up to 93.50%;The antifungal metabolite