Sample records for cell growth plant
from WorldWideScience.org

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1

La muerte celular programada en las plantas: ¿Es semejante a la "apoptosis" en animales?/ Programmed cell death in plants: it is similar to "apoptosis" in animals?/ A morte celular programada nas plantas: é semelhante a "apoptose" em animais?

Pérez Delgado, Yornayser; Galindo Castro, Iván; Arvelo, Francisco
2007-12-01

Resumen en portugués A morte celular programada (MCP) é essencial para manter a homeostase tissular em muitas formas de vida. Nas plantas, de igual forma que nos animais, a MCP é o mecanismo pelo qual se regulam uma série de processos fisiológicos tais como a germinação, diferenciação, crescimento, reprodução e desenvolvimento de sementes. A MCP também tem um papel importante em outros processos como o de resistência a condições ambientais desfavoráveis. Diferentemente dos mode (mas) los animais, a MCP em plantas é pouco descrita no nível molecular, o que há gerado debates sobre o paralelismo entre este tipo de morte programada e o processo conhecido em animais como apoptose. No entanto, nos últimos anos tem surgido evidências importantes que permitem concluir que nas plantas existe tal processo. Nesta revisão se analisam descobertas recentes no reino vegetal para esta área, que começam a vislumbrar elementos chave sobre a modulação da resposta da planta diante de muitos diversos fatores de estresse, tanto biótico como abióticos e abrindo, além disso, a possibilidade de utilizá-los em programas de melhoramento genético de itens agrícolas estratégicos. Resumen en español La muerte celular programada (MCP) es esencial para mantener la homeostasis tisular en muchas formas de vida. En las plantas, de igual forma que en los animales, la MCP es el mecanismo por el cual se regulan una serie de procesos fisiológicos tales como la germinación, diferenciación, crecimiento, reproducción y desarrollo de semillas. La MCP también juega un papel importante en otros procesos como la resistencia a condiciones ambientales desfavorables. A diferencia (mas) de los modelos animales, la MCP en plantas está poco descrita al nivel molecular, lo que ha dado lugar a debates sobre el paralelismo entre este tipo de muerte programada y el proceso conocido en animales como apoptosis. Sin embargo, en los últimos años han surgido evidencias importantes que permiten concluir que en las plantas existe tal proceso. En esta revisión se analizan hallazgos recientes del reino vegetal en esta área, que comienzan a vislumbrar elementos claves sobre la modulación de la respuesta de la planta ante muy diversos factores de estrés, tanto bióticos como abióticos, abriendo además la posibilidad de utilizarlos en programas de mejoramiento genético de rubros agrícolas estratégicos. Resumen en inglés Programmed cell death (PCD) is essential to maintain tissue homeostasis in many forms of life. As in animals, in plants PCD is the mechanism whereby a series of physiological processes, such as germination, differentiation, growth, reproduction and seed development, are regulated. PCD plays a key role in other processes such as resistance to unfavorable environmental conditions. Unlike animal models, PCD in plants has been scarcely described at molecular level, which has (mas) given rise to controversy about the parallelism between this type of PCD and the process known as apoptosis in animals. Nevertheless, evidences have come forth lately that allow to conclude that apoptosis occurs in plants as well. In this review, recent findings in this area in the plant kingdom are analyzed, which throw light on the modulation of the plant response against a diverse biotic and abiotic stress agent, paving the way for their use in genetic improvement programs for strategic crops.

Scientific Electronic Library Online (Spanish)

2

Efecto de la concanavalina a en el cultivo del fitopatógeno ustilago maydis

Saavedra Hernández, Elsa; Pérez Santiago, Alma; Pérez Campos, Eduardo; Córdoba Alva, Félix
2003-05-01

Resumen en portugués O efeito da adição da lectina Concanavalina A ao cultivo do fungo Ustilago maydis é examinado para contribuir ao entendimento dos mecanismos de reconhecimento e infecção entre fungos e plantas. A cinética de crescimento do fungo em cultivo mostrou que a adição de Con A tem um discreto efeito ativador sobre os basidiósporos a partir das 9h de incubação. Por outra parte, a união de Con A aos basidiósporos causou diversas mudanças morfológicas, agregação, m� (mas) �ltiplas ramificações e uma incrementada capacidade de gemação. A união de Con A aos basidiósporos foi evidenciada utilizando um conjugado fluorescente da lectina (Alexa-flúor), observando-se maior intensidade de fluorescência nas pontas e zonas de gemação dos basidiósporos, o que sugere a distribuição heterogênea de estruturas sacarídeas (receptores) sobre a superfície da parede celular do fungo durante o crescimento. Os efeitos da adição de Con A no cultivo do fungo se inibem ao incubar previamente a lectina com a-manopiranosa. Resumen en español El efecto de la adición de la lectina Concanavalina A al cultivo del hongo Ustilago maydis es examinado para contribuir al entendimiento de los mecanismos de reconocimiento e infección entre hongos y plantas. La cinética de crecimiento del hongo en cultivo mostró que la adición de Con A tiene un discreto efecto activador sobre las basidiosporas a partir de las 9h de incubación. Por otra parte, la unión de Con A a las basidiosporas causó diversos cambios morfológi (mas) cos, agregación, múltiples ramificaciones y una incrementada capacidad de gemación. La unión de Con A a las basidiosporas fue evidenciada utilizando un conjugado fluorescente de la lectina (Alexa-flúor), observándose mayor intensidad de fluorescencia en las puntas y zonas de gemación de las basidiosporas, lo que sugiere la distribución heterógena de estructuras sacarídicas (receptores) sobre la superficie de la pared celular del hongo durante el crecimiento. Los efectos de la adición de Con A en el cultivo del hongo se inhiben al incubar previamente la lectina con a-manopiranosa. Resumen en inglés The effect of Concanavalin A on Ustilago maydis cultures was tested in order to gain understanding about plant-fungi infection mechanisms. Growth kinetics of U. maydis in culture indicates that Con A promoted discrete culture growth after 9h of incubation, as compared with fungi cultures devoid of the lectin. Binding of Con A to basidial cells induced morphological changes such as agglutination, branching, ramification and increased budding. The use of a fluorescent conju (mas) gate of the lectin (Alexa-fluor) revealed points of increased fluorescence on the basidial cell tips and budding zones, suggesting a heterogeneous distribution of receptors on the cell wall surface during growth. The addition of a-D-methyl mannopyranoside to these preparations occluded the specific fluorescence.

Scientific Electronic Library Online (Spanish)

3

EVALUACIÓN DE ALGUNAS COMBINACIONES DE REGULADORES DE CRECIMIENTO INDUCTORAS DE CALLOS EN ACHIOTE (Bixa orellana L.), PLANTA ACTIVA CONTRA LA MORDEDURA DE SERPIENTES/ EVALUATION OF SOME GROWTH REGULATORS COMBINATION FOR CALLUS INDUCTION IN ANNATTO (Bixa orellana L.) ACTIVE PLANT AGAINST SNAKE BITES

ALARCÓN P., Juan C.; CASTAÑO P., Hader I.; CORRALES G., Ligia L.; JIMÉNEZ R., Silvia L.; DÍAZ C., Abel
2006-03-01

Resumen en español Recientes evidencias sugieren que el achiote puede constituirse en una alternativa terapéutica por sus efectos directos e indirectos contra el veneno de Bothrops asper, serpiente causante de la mayoría de mordeduras en nuestro país. Considerando que la producción metabólica ex vitro de esta planta no se obtiene de manera temprana y que eventualmente puede lograrse con ayuda de cultivos celulares, el trabajo evalúa algunas combinaciones inductoras de callos en segmen (mas) tos de hojas, raíces y tallos de plantas de Bixa orellana L. con el fin de inducir y masificar tejidos precursores de suspensiones celulares potencialmente productores de los metabolitos activos. Estos explantes, dispuestos en medios nutritivos sin reguladores de crecimiento, o con suplementos de algunas combinaciones de ellos, se almacenan por ocho semanas a 25± 1º C y oscuridad, verificando los porcentajes de formación de callo en las semanas dos, cinco y ocho del cultivo. La generación de callo en explantes provenientes de raíces no resulta masiva, mientras que en tallos y hojas se favorece con el tratamiento empleado y con el tiempo de exposición a los reguladores de crecimiento. Sin importar el explante utilizado, la inducción de callo se aumenta con la exposición al tratamiento que involucra NAA (5 µM) y kinetina (4,64 µM), alcanzando valores de 17.0 % (raíces), 58.9 % (tallos) y 77.5 % (hojas) Resumen en inglés Recent evidences suggest annatto can be constituted in a therapeutic alternative by its direct and indirect influences against the poison of Bothrops asper, cause of most of snake bite in our country. The ex- vitro metabolic production of this plant is not obtained in early growth stages but it is possible to obtain it by means of cell cultures. This research evaluates some inductive calli combinations of plant segments of Bixa orellana L., like leaves, roots and stems gr (mas) own in vitro, in order to get high induction rates and bigger amounts of tissue precursors of cellular suspensions, potentially producers of active metabolites. These explants, located in nutritious means without growth regulators, or with supplements of some combinations of them, are stored for eight weeks (25± 1º C and darkness) and the calli formation percentage tested in second, fifth and eighth week of growing. The calli generation in explants from roots is low, whereas in those from stems and leaves is favored with the treatment and with exposition time to the growth regulators. Regardless of the kind of explant used, the calli formation percentage is increased by the treatment that uses NAA (5 µM) and kinetine (4.64 µM), and showing values of 17,0 %, 58,9 % and 77,5 % for roots, stems and leaves respectively.

Scientific Electronic Library Online (Spanish)

4

Las β-Galactosidasas y la dinámica de la pared celular/ β-Galactosidases and cell wall dynamics/ As β-Galactosidasas e a dinâmica da parede celular

Pérez-Almeida, Iris; Carpita, Nicholas C
2006-07-01

Resumen en portugués A parede celular é crucial na determinação do crescimento e desenvolvimento da célula vegetal. Na maioria das angiospermas existem muitos glucanos entrelaçados sobre uma infra-estrutura de celulosa. O monosacarídeo galactosa é um constituinte chave da maior parte dos polisacarídeos não celulósicos nas paredes celulares vegetais: fucogalacto-xiloglucanos, cadeias de (1→3), (1→6)β-D-galactano tipo II, proteínas com arabinogalactanos, (1→4)& (mas) #946;-D-galactanos e os arabinogalactanos tipo I. Cada um destes componentes exibe um metabolismo diferente durante etapas específicas do crescimento e desenvolvimento celular. Por exemplo, têm-se observado alterações durante a ensamblagem ou remodelação da parede celular através da hidrólise de galactosídeos ou galactanos da parede, que ocorrem antecedendo certos eventos do desenvolvimento, tais como o início da maduração dos frutos e o início da formação de feixes fibrosos em linho. Não têm-se encontrado endo-galactanase em plantas, pelo que se responsabiliza às exo-galactanase/β-galactosidase pela hidrólise de todos os polímeros que contêm galactose na parede celular. Esta revisão examina os polímeros que contêm galactosa na parede celular e propôe uma função e rol biológico para β-galactosidase vegetal no contexto da dinâmica do crescimento celular. Resumen en español La pared celular es crucial en la determinación del crecimiento y desarrollo de la célula vegetal. En la mayoría de las angiospermas existen muchos glucanos entrelazados sobre una infraestructura de celulosa. El monosacárido galactosa es un constituyente clave de la mayor parte de los polisacáridos no celulósicos en las paredes celulares vegetales: fucogalacto-xiloglucanos, cadenas de (1→3), (1→6)β-D-galactano tipo II, proteínas con arabinogalactan (mas) os, (1→4)β-D-galactanos y los arabinogalactanos tipo I. Cada uno de estos componentes exhibe un metabolismo diferente durante etapas específicas del crecimiento y desarrollo celular. Por ejemplo, se han observado alteraciones durante el ensamblaje o remodelación de la pared celular a través de la hidrólisis de galactósidos o galactanos de la pared, que ocurren antecediendo ciertos eventos del desarrollo, tales como el inicio de la maduración de los frutos y el inicio de la formación de haces fibrosos en lino. No se han encontrado endo-galactanasas en plantas, por lo que se responsabiliza a las exo-galactanasas/β-galactosidasas por la hidrólisis de todos los polímeros que contienen galactosa en la pared celular. Esta revisión examina los polímeros que contienen galactosa en la pared celular y propone una función y rol biológico para las β-galactosidasas vegetales en el contexto de la dinámica del crecimiento celular. Resumen en inglés The cell wall is the major determinant of plant cell growth and development. Upon a framework of cellulose, in most flowering plants, there are many cross-linking glycans and pectins whose composition and interactions are involved in wall dynamics during growth. The monosaccharide galactose is a key constituent of major non-cellulosic polysaccharides in most plant cell walls: fucogalacto-xyloglucans, (1→3), (1→6)β-D-galactan chains of the type II arabinog (mas) alactan-proteins, (1→4)βD-galactans and related type I arabinogalactans. Each of them exhibits a different turnover at specific stages of cell growth and development. For instance, alterations in cell wall assembly or remodeling through hydrolysis of galactosides and galactans in the cell wall, pre-stages certain developmental events, such as the onset of fruit ripening and the initiation of fiber bundles in flax. No endo-galactanases have been found in plants; therefore, exo-galactanases/β-galactosidases are held responsible for the hydrolysis of all cell-wall galactose-containing polymers. The purpose of this paper is to review cell wall galactose-containing polymers and to better understand the biological role of the plant β-galactosidases in the context of the dynamics during cell growth.

Scientific Electronic Library Online (Spanish)

5

Las proteínas arabinogalactanos en cultivos de células vegetales/ Arabinogalactan proteins in plant cell cultures/ As proteínas arabinogalactanos em cultivos de células vegetais

Hernández Sánchez, Arianna Michelle; Capataz Tafur, Jacqueline; Rodríguez-Monroy, Mario; Sepúlveda-Jiménez, Gabriela
2009-03-01

Resumen en portugués As proteínas arabinogalactanos (AGPs) são macromoléculas que se encontram praticamente em todos os órgãos das plantas, sendo associadas com vários aspectos do crescimento e desenvolvimento vegetal. Estas moléculas se caracterizam bioquímicamente por conter carboidratos e proteínas em relação 9:1. O carboidrato está composto principalmente por arabinogalactanos tipo II; enquanto que a parte protéica está organizada em domínios que definem as AGPs como cláss (mas) icas ou não clássicas. As primeiras se caracterizam, além disso, por apresentar uma sequência C-terminal que prediz a incorporação de um grupo glicosilfosfatidilinositol (GFI), que permite sua união à membrana plasmática. Em cultivos de células vegetais se relatam várias espécies que liberam AGPs ao meio de cultivo. Apresenta-se uma revisão das características bioquímicas das AGPs liberadas ao meio e das propostas sobre os mecanismos bioquímicos e celulares pelos quais as AGPs participam na diferenciação e crescimento das células vegetais. Os cultivos de células liberam ao meio de cultivo AGPs clássicas e não clássicas, e se propõe que poderiam provir da membrana plasmática ou da parede celular. As AGPs intervêm no controle do crescimento celular, além de estar relacionadas com a embriogênese somática e a organogênese, processos de diferenciação celular importantes nos sistemas de micropropagação de plantas. O mecanismo bioquímico pelo qual as AGPs participam no crescimento celular e a diferenciação, implica que estas, ou os produtos de sua degradação, talvez atuem como moléculas de sinalização. Resumen en español Las proteínas arabinogalactanos (AGPs) son macromoléculas que se encuentran prácticamente en todos los órganos de las plantas, siendo asociadas con varios aspectos del crecimiento y desarrollo vegetal. Estas moléculas se caracterizan bioquímicamente por contener carbohidratos y proteínas en relación 9:1. El carbohidrato está compuesto principalmente por arabinogalactanos tipo II; mientras que la parte proteica está organizada en dominios que definen a las AGPs c (mas) omo clásicas o no clásicas. Las primeras se caracterizan además por presentar una secuencia C-terminal que predice la incorporación de un grupo glicosilfosfatidilinositol (GFI), que permite su unión a la membrana plasmática. En cultivos de células vegetales se reportan varias especies que liberan AGPs al medio de cultivo. Se presenta una revisión de las características bioquímicas de las AGPs liberadas al medio y de las propuestas sobre los mecanismos bioquímicos y celulares por los cuales las AGPs participan en la diferenciación y crecimiento de las células vegetales. Los cultivos de células liberan al medio de cultivo AGPs clásicas y no clásicas, y se propone que podrían provenir de la membrana plasmática o la pared celular. Las AGPs intervienen en el control del crecimiento celular, además de estar relacionadas con la embriogénesis somática y la organogénesis, procesos de diferenciación celular importantes en los sistemas de micropropagación de plantas. El mecanismo bioquímico por el cual las AGPs participan en el crecimiento celular y la diferenciación implica que éstas, o los productos de su degradación, quizás actúen como moléculas de señalización. Resumen en inglés The arabinogalactan proteins (AGPs) are macromolecules found in practically all plant organs, being associated with several aspects of the plant growth and development. These molecules contain carbohydrates and proteins in a 9:1 relation. The carbohydrate moiety is composed mainly of type II arabinogalactans, whereas the protein has particular amino acid domains that allow classifying the AGPs into two groups, classical and non-classical. In addition, the former are chara (mas) cterized by a C-terminal tail that predicts the incorporation of a glycosylphosphatidylinositol group (GPI) that allows the attachment of the AGPs to the plasma membrane. Plant cell cultures of several species release AGPs into the culture medium. The biochemical characteristics of the AGPs released into the medium, and the proposed biochemical and cellular mechanisms by which AGPs participate in plant cell differentiation and growth are reviewed. The plant cells release classical as well as non-classical AGPs into the culture medium. The origin of these AGPs could likely be the plasma membrane or the cell wall. They are involved in the control of cellular growth and differentiation processes, aspects that have fundamental importance in the induction of somatic embryogenesis and organogenesis, key steps in plant micropropagation programs. The biochemical mechanism by which the AGPs participate in cell growth and differentiation implies that the AGPs or their degradation products participate like signal molecules.

Scientific Electronic Library Online (Spanish)

6

p53-Independent checkpoint controls in a plant cell model

Pelayo, Helvia R.; Pincheira, Juana; Giménez-Abián, Juan F.; Clarke, Duncan J.; Torre, Consuelo de la
2004-09-01

Digital.CSIC (Spain)

7

Unusual tolerance to high temperatures in a new herbicide-resistant D1 mutant from Glycine max (L.) Merr. cell cultures deficient in fatty acid desaturation

Alfonso Lozano, Miguel; Yruela Guerrero, Inmaculada; Almarcegui, S.; Torrado, Elena; Pérez, M. A.; Picorel Castaño, Rafael
2001-03-01

Digital.CSIC (Spain)

8

Transgenic plant cells expressing a recombinan plant E2F peptide

Gutiérrez Armenta, Crisanto ; Xie, Qi ; Ramírez Parra, Elena

Filing Date: 1999-05-07 -- Priority Data: ES P 9800975 (1998-05-08),ES P 9800981 (1998-05-11) | A method of controlling plant growth and/or cellular DNA replication and/or cell cycle progression, differentiation and development comprising increasing or decreasing E2F activity in a plant cell. | Pee...

DRIVER (Spanish)

9

Transgenic plant cells expressing a recombinan plant E2F peptide

Gutiérrez Armenta, Crisanto; Xie, Qi; Ramírez-Parra, Elena
1999-11-18

Digital.CSIC (Spain)

10

Transgenic Evaluation of Activated Mutant Alleles of SOS2 Reveals a Critical Requirement for Its Kinase Activity and C-Terminal Regulatory Domain for Salt Tolerance in Arabidopsis thaliana

Guo, Yan; Qiu, Quan-Sheng; Quintero, Francisco J.; Pardo, José M.; Ohta, Masaru; Zhang, Changqing; Schumaker, Karen S.; Jian-Kang, Zhu
2004-02-01

Digital.CSIC (Spain)

11

Toxicological Effects of Dietary Biogenic Amines

Ladero, Victor; Calles-Enríquez, Marina; Fernández, María; Alvarez, Miguel A.
2010-05-01

Digital.CSIC (Spain)

12

The progamic phase of an early-divergent angiosperm, Annona cherimola (Annonaceae)

Lora, Jorge; Hormaza, José Ignacio; Herrero Romero, María
2010-02-01

Digital.CSIC (Spain)

13

The ionic environment controls the contribution of the barley HvHAK1 transporter to potassium acquisition

Fulgenzi, Fabiana R.; Peralta, María Luisa; Mangano, Silvina; Danna, Cristian H.; Vallejo, Augusto J.; Puigdomènech, Pere; Santamaría, Guillermo E.
2008-03-21

Digital.CSIC (Spain)

14

The effect of temperature on stigmatic receptivity in sweet cherry (Prunus avium L.)

Hedhly, Afif; Hormaza, José Ignacio; Herrero Romero, María
2003-10-01

Digital.CSIC (Spain)

15

The Sinorhizobium meliloti RNA chaperone Hfq influences central carbon metabolism and the symbiotic interaction with alfalfa

Torres Quesada, Omar; Oruezabal, Roke I.; Peregrina, Alexandra; Jofré, Edgardo; Lloret, Javier; Rivilla, Rafael; Toro, Nicolás; Jiménez Zurdo, José I.
2010-03-06

Digital.CSIC (Spain)

16

The Influence of Heavy Metals and Mineral Nutrient Supply on Bituminaria bituminosa

Walker, David J.; Bernal Calderón, M. Pilar; Correal, Enrique
2007-09-01

Digital.CSIC (Spain)

17

The G2 checkpoint activated by DNA damage does not prevent genome instability in plant cells

Carballo, Jesús A.; Pincheira, Juana; Torre, Consuelo de la
2006-04-01

Digital.CSIC (Spain)

18

Synergistic effect of methyljasmonate and cyclodextrin on stilbene biosynthesis pathway gene expression and resveratrol production in Monastrell grapevine cell cultures

Lijavetzky, Diego; Almagro, Lorena; Belchi-Navarro, Sarai; Martínez-Zapater, José M.; Bru, Roque; Pedreño, Maria A.
2008-12-22

Digital.CSIC (Spain)

22

Somatic Embryogenesis in Chestnut. New Approaches

Ballester, Antonio; Corredoira, Elena; Viéitez, Francisco Javier; Viéiztez, Ana M.
2005-12-22

Digital.CSIC (Spain)

23

Seasonal evolution of diffusional limitations and photosynthetic capacity in olive under drought

Nicolás Nicolás, Emilio; Díaz-Espejo, Antonio; Fernández, José Enrique
2007-01-01

Digital.CSIC (Spain)

24

Rootstock-mediated changes in xylem ionic and hormonal status are correlated with delayed leaf senescence, and increased leaf area and crop productivity in salinized tomato

Albacete, Alfonso; Martínez-Andújar, Cristina; Ghanem, M.E.; Acosta, M.; Sánchez-Bravo, J.; Asins, M.J.; Cuartero, Jesús; Lutts, S.; Dodd, Ian C.; Pérez-Alfocea, Francisco
2009-07-01

Digital.CSIC (Spain)

25

Role of an atypical E2F transcription factor in the control of arabidopsis cell growth and differentiation

Ramírez-Parra, Elena ; López-Matas, M. Ángeles ; Fründt, Corinne ; Gutiérrez Armenta, Crisanto

The balance between cell proliferation and differentiation is crucial in multicellular organisms, where it is regulated by complex gene expression networks. This is particularly relevant in plants because organogenesis is a continuous postembryonic process. Here, we investigate the function of Arabi...

DRIVER (Spanish)

26

Role of an atypical E2F transcription factor in the control of arabidopsis cell growth and differentiation

Ramírez-Parra, Elena; López-Matas, M. Ángeles; Fründt, Corinne; Gutiérrez Armenta, Crisanto
2004-08-12

Digital.CSIC (Spain)

27

Regulation of growth, water use efficiency and d13C by the nitrogen source in Casuarina equisetifolia Forst. & Forst.

Martínez-Carrasco, R.; Pérez, P.; Handley, L.L.; Scrimgeour, C.M.; Igual, J. M.; Martín del Molino, Isabel; Sánchez de la Puente, L.
1998-01-01

Digital.CSIC (Spain)

28

Pyrrolizidine alkaloids from Canarian endemic plants and their biological effects

Domínguez-Díaz, Dulce; Reina, Matías; Santos-Guerra, Arnoldo; Santana, Omar; Agulló-Ortuño, Teresa; López-Barboa, Carmen; González-Coloma, Azucena
2008-03-01

Digital.CSIC (Spain)

29

Plant retinoblastoma-associated proteins

Gutiérrez Armenta, Crisanto; Xie, Qi; Sanz Burgos, Andrés; Suarez López, Paula
1997-12-18

Digital.CSIC (Spain)

30

Plant retinoblastoma-associated gene

Gutiérrez Armenta, Crisanto; Sanz Burgos, Andrés; Xie, Qi; Suarez López, Paula
2002-05-07

Digital.CSIC (Spain)

31

Plant proteins

Gutiérrez Armenta, Crisanto ; Sanz Burgos, Andrés ; Xie, Qi ; Suarez López, Paula

Filing Date: 2001-12-26 | Method for controlling the growth of a plant cell or a plant virus within the cell wherein the level and/or activity retinoblastoma protein in that plant cell is increased or decreased by incorporating a recombinant nucleic acid | Peer reviewed

DRIVER (Spanish)

32

Plant proteins

Gutiérrez Armenta, Crisanto; Sanz Burgos, Andrés; Xie, Qi; Suarez López, Paula
2002-09-19

Digital.CSIC (Spain)

33

Plant GRAB proteins

Gutiérrez Armenta, Crisanto ; Xie, Qi ; Sanz Burgos, Andrés

Filing Date: 1998-06-09 -- Priority Data: ES P 9701292 (1997-06-12) | A method of controlling plant cell and plant virus growth and/or replication, plant cell cycle, differentiation, development and/or scenescence is provided characterised in that it comprises increasing or decreasing the levels or ...

DRIVER (Spanish)

34

Plant GRAB proteins

Gutiérrez Armenta, Crisanto; Xie, Qi; Sanz Burgos, Andrés
1998-12-17

Digital.CSIC (Spain)

35

Pathogenicity of the root-knot nematode Meloidogyne javanica on potato

Vovlas, Nicola; Mifsud, D.; Landa, Blanca B.; Castillo, Pablo
2005-07-26

Digital.CSIC (Spain)

36

Pathogenicity and host-parasite relationships of the root-knot nematode Meloidogyne incognita on celery

Vovlas, Nicola; Lucarelli, G.; Sasanelli, N.; Troccoli, Alberto; Papajova, I.; Palomares Rius, Juan E.; Castillo, Pablo
2008-03-27

Digital.CSIC (Spain)

38

Pathogenicity and Host-Parasite Relationships of Meloidogyne arenaria in Sweet Basil

Vovlas, Nicola; Troccoli, Alberto; Minuto, A.; Bruzzone, C.; Sasanelli, N.; Castillo, Pablo
2008-09-01

Digital.CSIC (Spain)

39

Ole e 1, the Major Allergen from Olive (Olea europaea L.) Pollen, Increases its Expression and is Released to the Culture Medium during in vitro Germination

Alché Ramírez, Juan de Dios; M'rani-Alaoui, Mohamed; Castro López, Antonio Jesús; Rodríguez García, María I.
2004-01-01

Digital.CSIC (Spain)

42

Molecular cloning and pattern of expression of an alpha-L-fucosidase gene from pea seedlings

Augur, Christopher; Stiefel, Virginia; Darvin, Alan; Albersheim, Peter; Puigdomènech, Pere
1995-10-01

Digital.CSIC (Spain)

43

Mitochondrial b-Cyanoalanine Synthase Is Essential for Root Hair Formation in Arabidopsis thaliana

García, Irene; Castellano, José María; Vioque, Blanca; Solano, Roberto; Gotor, Cecilia; Romero, Luis Carlos
2010-10-01

Digital.CSIC (Spain)

45

Isolation and characterization of a fluorene-degrading bacterium: identification of ring oxidation and ring fission products

Grifoll, Magdalena; Casellas, Mercè; Bayona i Termens, Josep María; Solanas, Anna M.
1992-09-01

Digital.CSIC (Spain)

46

Increase in a heat-shock protein from red blood cells in response of nestling house martins (Delichon urbica) to parasitism: an experimental approach.

Merino, Santiago; Martínez, Javier; Barbosa, Andrés; Møller, A. P.; Lope, F. de; Pérez, J.; Rodríguez-Caabeiro, F.
1998-01-01

Digital.CSIC (Spain)

47

Host–parasite relationships of Meloidogyne incognita on spinach

Di Vito, Mauro; Vovlas, Nicola; Castillo, Pablo
2004-08-24

Digital.CSIC (Spain)

48

Host-parasite relationships in root-knot disease of white mulberry

Castillo, Pablo; Di Vito, Mauro; Vovlas, Nicola; Jiménez-Díaz, Rafael M.
2001-03-01

Digital.CSIC (Spain)

49

High-affinity potassium and sodium transport systems in plants

Rodríguez-Navarro, Alonso; Rubio, Francisco
2006-01-31

Digital.CSIC (Spain)

50

Functional Characterization of an Unusual Phytochelatin Synthase, LjPCS3, of Lotus japonicus

Ramos Escribano, Javier; Naya, Loreto; Gay, Marina; Abian, Joaquín; Becana Ausejo, Manuel
2008-01-01

Digital.CSIC (Spain)

52

Engineering of gibberellin levels in citrus by sense and antisense

Fagoaga, Carmen; Tadeo, Francisco R.; Iglesias, Domingo J.; Huerta, Laura; Lliso, Ignacio; Vidal, Ana M.; Talón, Manuel; Navarro, Luis; García-Martínez, José Luis; Peña, Leandro
2007-02-21

Digital.CSIC (Spain)

53

Effect of Gibberellin and Auxin on Parthenocarpic Fruit Growth Induction

Serrani, Juan C. ; Fos, Mariano ; Atares, Alejandro ; García-Martinez, José-Luis

The effect of applied gibberellin (GA) and auxin on fruit-set and growth has been investigated in3 tomato (Solanum lycopersicum L.) cv Micro-Tom. It was found that to prevent competition4 between developing fruits only one fruit per truss should be left in the plant. Unpollinated5 ovaries respond...

DRIVER (Spanish)

54

Effect of Gibberellin and Auxin on Parthenocarpic Fruit Growth Induction

José Serrani, Juan Carlos; Fos, Mariano; Atares, Alejandro; García-Martínez, José Luis
2007-01-01

Digital.CSIC (Spain)

55

Efecto del tamaño de celdas y citoquininas en el crecimiento de plantas de petunia/ Effect of cell size and cytok inins on growth of petunia plants

Lagoutte, S; Divo de Sesar, M; Vilella, F
2009-06-01

Resumen en español Los cultivos de plantas florales anuales se realizan en bandejas alveoladas o contenedores. La variación en el tamaño de la celda de la bandeja de germinación altera el volumen donde se desarrollan las raíces, lo que afecta el crecimiento de la planta. Este trabajo evaluó el efecto del tamaño inicial del contenedor en el crecimiento de plántulas de Petunia x híbrida cv Dream Mix, suplementadas, luego del repique, con citoquininas. Plántulas obtenidas en bandejas (mas) de 90 y 288 alvéolos, se trasplantaron a macetas de 1L y fueron tratadas con dosis de 6-bencilaminopurina (BAP), resultando 4 tratamientos: 2 tamaños de contenedor por 2 BAP (con y sin). El tamaño de la celda condicionó el desarrollo de la parte aérea y radical, ya que en las de menor tamaño disminuyó (p Resumen en inglés Annual floral plant crops are produced in cells or pots of various sizes. Varying container size alters the volume which plant roots can explore, which in turn affect plant growth. This work assesed the effect of the initial container size on growth of Petunia x híbrida cv Dream Mix, supplemented with cytokinins after potting. Seedlings obtained in trays of 90 or 288 cells, were transplanted to 1l pots. They were then supplemented with 6-bencyladenine (BA). The assay con (mas) sisted of 4 treatments: two container sizes by two BA conditions (with and without). Cell size conditioned growth above ground and below ground; growth rate and shoot/root ratios decreased (p

Scientific Electronic Library Online (Spanish)

56

Efecto del sistema y densidad de la almaciguera en el cultivo de cebolla (Allium cepa)/ Effect of density and seedbed system in onion (Allium cepa) production

Gómez, César; Oberpaur, Christel
2007-12-01

Resumen en español Los almacigos de cebolla (Allium cepa) se siembran en suelo o en contenedores (alvéolos) de reducido volumen, en alta densidad, sin considerar el efecto del tamaño del contenedor en el crecimiento del cultivo. Con el propósito de estudiar el efecto del sistema y densidad de la almaciguera se realizaron dos ensayos (almacigo y transplante) en la Región Metropolitana (entre 33,3° y 34° lat. sur), Chile. Se empleó cebolla cv. Grano de Oro, cultivar de día largo desti (mas) nado para guarda, en la temporada 2004-2005. La siembra de almacigos para transplante a raíz cubierta se estudió en contenedores con 286 (10 cm³), 432 (10 cm³) y 814 (5 cm³) alvéolos, correspondiendo a 1144 (DI), 1728 (D2) y 3256 (D3) plantas/m² y para trasplante a raíz desnuda en cajoneras, con iguales densidades, bajo invernadero. Hasta 25 días después de emergencia (dde) la densidad y el tipo de almaciguera no influyeron el diámetro del cuello. A 77 días, D3 presentó un diámetro de cuello de 3,8 mmplanta' y DI 5,2 mmplanta¹; el peso seco (PS) radical fue de 4,8 y 6,2 g•planta-1, respectivamente, con menor efecto en plantines de contenedores. Los plantines se transplantaron al aire libre, cuando éstos alcanzaron 5 a 6 mm a nivel de cuello. A los 23 días después del transplante (ddt), hubo diferencias en el diámetro de cuello entre las tres densidades de planta, pero no hubo diferencias significativas entre transplante a raíz cubierta o desnuda. Las plantas provenientes de D3 mostraron menor diámetro de cuello y PS de canopia, hasta 84 ddt. En cosecha no hubo diferencias entre densidades en categorías de calidad y malformaciones de bulbos Resumen en inglés Production of onion (Allium cepa) seedlings for transplants is done directly in flat soil conditions or in trays using reduced cell volumes and high plant density conditions, without consideration of the possible effect that reduced cell volume can have on crop growth. Therefore, the objective of this study was to evaluate the production of onion seedlings in two seedbed systems and their subsequent behavior in the field. Seedling production and transplant establishment w (mas) ere determined with a long-day type of onion (cv. Grano de Oro) in the Metropolitan Region of Chile (33°-34° south latitude) from 2004 to 2005. The production of covered root transplants was performed in trays with 286 (18 cm³), 432 (10 cm³) and 814 (5 cm³) cells each, equivalent to plant densities of 1144 (low), 1728 (medium) and 3256 (high) plants-m², respectively. The production of bare root transplants was done in boxes with equal plant densities as in the tray system. Next, plants obtained from each seedbed system and plant density were field transplanted. Based on the results obtained, neither plant density nor transplant production system affected the pseudo stem diameter 25 days after emergency (DAE). At 77 DAE, the pseudo stem diameters were 3.8 and 5.2 mm, the root dry weights (DW) were 4.8 and 6.2 g•planta-1 produced in high and low plant density, respectively. This suggests that the tray system had a minor effect on plant development. At 23 days after transplanting (DAT) differences in the pseudo stem diameter between the three densities were obtained, although differences between the bare and covered root systems were not statistically significant. Plants obtained from high-density seedbeds showed a smaller pseudo stem diameter and lower canopy DW than plants produced in low-density seedbeds until 84 DAT. At harvest, no differences were observed in formation or among the quality categories of the onion. Therefore, it is feasible to produce onion seedlings to be transplanted with bare roots or covered roots, produced in high-density boxes or in 5 cm³ cells, without affecting the final quality of harvested onion bulbs

Scientific Electronic Library Online (Spanish)

57

Efecto de Mycosphaerella fijiensis sobre la fisiología de la hoja de banano/ Physiological effect of Mycosphaerella fijiensis in banana leaves

Rodríguez-Gaviria, Paola Andrea; Cayón, Gerardo
2008-08-01

Resumen en español Las tasas de fotosíntesis y transpiración, la concentración de azúcares reductores y no reductores, de almidón y el contenido de clorofila fueron cuantificados en hojas de banano con y sin síntomas de sigatoka negra, enfermedad causada por el hongo Mycosphaerella fijiensis Morelet. Las hojas enfermas presentaron alteraciones en todas las variables fisiológicas evaluadas, determinándose una pérdida notable de biomasa y de pigmentos fotosintéticos desde los estadi (mas) os iniciales de infección, afectando directamente procesos fisiológicos básicos como fotosíntesis y transpiración. Estos dos procesos, así como la resistencia y la actividad estomática, se alteraron en relación directa con el aumento de la severidad de la enfermedad. Se observó un daño severo de las cavidades estomáticas, causado por la penetración del hongo y por la extrusión del inóculo para nuevas infecciones. También, disminuciones en las concentraciones de almidón y azúcares desde los inicios de la infección, relacionadas presumiblemente con el consumo de estos compuestos por el hongo, ya que son necesarios para su nutrición. Todas las variables evaluadas se relacionan con procesos fisiológicos básicos, lo que indica que existen daños irreparables en los tejidos de la hoja que impiden el funcionamiento adecuado de la planta y que inciden directamente sobre su desarrollo y producción. A partir de los primeros estadios de la enfermedad se observan daños irreparables en los tejidos celulares; sin embargo, los mayores efectos se observan en el estadio 4, lo que indica la necesidad de un control temprano de la enfermedad. Resumen en inglés Rates of photosynthesis and transpiration, and chlorophyll, sucrose, starch and reducing sugar contents were quantified in banana leaves with and without black sigatoka, a disease caused by the fungus Mycosphaerella fijiensis Moleret. The disease affected all physiological variables. Biomass and photosynthetic pigments were affected from the earliest infection stages and this effect was related to photosynthesis and transpiration process. These two processes, as well as r (mas) esistance and stomata activity, were more affected as disease severity increased. Fungal penetration and release of conidia caused severe damage in the stomata structures. Decreases in starch and sugar concentrations occurred from the onset of infections and were presumably related to the consumption of these compounds by the fungus during penetration. All the measured variables are related to basic physiological processes indicating severe damages in banana leaf tissues that affect plant function, growth and production. Irreversible cell damages are caused at the earliest disease stages, however, the most severe effects are observed at the fourth stage. These results suggest the necessity of an early disease control for a good crop management.

Scientific Electronic Library Online (Spanish)

58

Copper in plants

Yruela Guerrero, Inmaculada
2005-03-01

Digital.CSIC (Spain)

59

Chlamydomonas CONSTANS and the Evolution of Plant Photoperiodic Signaling

Serrano, Gloria; Herrera-Palau, Rosana; Romero, José M.; Serrano, Aurelio; Coupland, George; Valverde, Federico
2009-02-19

Digital.CSIC (Spain)

61

Cadmium-stress in white lupin: effects on nodule structure and functioning

Carpena, R. O.; Vázquez, S.; Esteban, Elvira; Fernández Pascual, Mercedes; Felipe, Mª Rosario de; Zornoza, Pilar
2003-01-01

Digital.CSIC (Spain)

62

Cadmium-stress in nodulated white lupin: strategies to avoid toxicity

Zornoza, Pilar; Vázquez, S.; Esteban, Elvira; Fernández Pascual, Mercedes; Carpena, R. O.
2002-01-01

Digital.CSIC (Spain)

63

Biosynthesis of Ascorbic Acid in Legume Root Nodules

Matamoros Galindo, Manuel Antonio; Loscos, Jorge; Coronado, María José; Ramos Escribano, Javier; Sato, Shusei; Sánchez-Testillano, Pilar; Tabata, Satoshi; Becana Ausejo, Manuel
2006-06-09

Digital.CSIC (Spain)

64

Biological Nitrogen Fixation and Plant-Associated Microorganisms

National Meeting of the Spanish Society of Nitrogen Fixation (SEFIN) (13th. Zaragoza. 2010); Portuguese-Spanish Congress on Nitrogen Fixation (2nd. Zaragoza. 2010); Becana Ausejo, Manuel
2010-06-01

Digital.CSIC (Spain)

65

Behavior of Listeria monocytogenes during the Manufacture, Ripening, and Cold Storage of Afuega'l Pitu Cheese

Margolles Barros, Abelardo; Rodríguez González, Ana; González de los Reyes-Gavilán, Clara
1997-06-01

Digital.CSIC (Spain)

68

Arabidopsis S-Sulfocysteine Synthase Activity Is Essential for Chloroplast Function and Long-Day Light-Dependent Redox Control

Bermúdez, Maria Angeles; Páez-Ochoa, Maria Angeles; Gotor, Cecilia; Romero, Luis C.
2010-02-23

Digital.CSIC (Spain)

73

A constitutive shade-avoidance mutant implicates TIR-NBS-LRR proteins in Arabidopsis photomorphogenic development

Faigón Soverna, Ana; Harmon, Franklin G.; Storani, Leonardo; Karayekov, Elizabeth; Staneloni, Roberto J.; Gassmann, Walter; Más, Paloma; Casal, Jorge J.; Kay, Steve A.; Yanovsky, Marcelo J.
2006-11-17

Digital.CSIC (Spain)