Dehydration Tolerance
Mostrando 1-12 de 68 artigos, teses e dissertações.
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1. In situ DNA fragmentation during the re-establishment of desiccation tolerance in germinated seeds of Cedrela fissilis Vell.
Resumo: A desidratação é um procedimento necessário antes de expor as sementes ao armazenamento a longo prazo, mas isso está associado à lesão ligada ao metabolismo mediada por lesão celular. A fim de avaliar as alterações celulares durante o restabelecimento da tolerância à dessecação (TD) em sementes germinadas de C. fissilis e sua relação
J. Seed Sci.. Publicado em: 01/07/2019
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2. Isolation and characterization of a promoter responsive to salt, osmotic and dehydration stresses in soybean
Abstract Drought stress is the main limiting factor of soybean yield. Currently, genetic engineering has been one important tool in the development of drought-tolerant cultivars. A widely used strategy is the fusion of genes that confer tolerance under the control of the CaMV35S constitutive promoter; however, stress-responsive promoters would constitute the
Genet. Mol. Biol.. Publicado em: 27/03/2017
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3. Introduction of the rd29A: AtDREB2A CA gene into soybean (Glycine max L. Merril) and its molecular characterization in leaves and roots during dehydration
The loss of soybean yield to Brazilian producers because of a water deficit in the 2011-2012 season was 12.9%. To reduce such losses, molecular biology techniques, including plant transformation, can be used to insert genes of interest into conventional soybean cultivars to produce lines that are more tolerant to drought. The abscisic acid (ABA)-independent
Genet. Mol. Biol.. Publicado em: 2013
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4. Efeito de hidratacao e desidratacao no desempenho fisiologico de sementes de trigo.
Com o objetivo de avaliar os efeitos da secagem durante o processo germinativo, sementes de trigo (Triticum aestivum L.cv.OCEPAR 7-Batuira) foram submetidas a periodos crescentes de hidratacao, que variaram de 3 a 48 horas, com intervalos de tres horas entre si. A populacao de cada periodo de hidratacao foi separada em grupos, com base nas caracteristicas vi
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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5. Análises moleculares das vias de sinalização de morte celular originadas no retículo endoplasmático / Molecular analyses of cell death pathways signalling originated in the endoplasmic reticulum
Abiotic and biotic stresses are responsible for major losses in agricultural productivity world wise. Therefore, the understanding of mechanisms of plant stress response and adaptation to such conditions should provide the foundation for engineering plant stress tolerance and hence maximizing the yield of crops growing under adverse environmental conditions.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/02/2010
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6. Estresse osmótico e do retículo endoplasmático induzem morte celular programada de maneira dependente das proteínas NRPs / Osmotic- and ER-stress induce NRPs-dependent programed cell death
The identification of cell signaling pathways in response to different stresses and the interactions among these pathways have become major focus for understanding the molecular bases of plant cell-environment interactions. Recently, a novel integrative pathway between ER- and osmotic-stress has been described by our group. Among the target genes of the inte
Publicado em: 2007
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7. Desiccation tolerance and sensitivity in Medicago truncatula and Inga vera seeds
Orthodox seeds acquire desiccation tolerance (DT) during their development which enables them to pass through the phase of maturation drying by the end of their development and enter a state of quiescence. After harvesting, these seeds can be dried further and stored for the long-term without significant loss of viability. On the other hand, there are many s
Publicado em: 2006
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8. Analise do efeito da radiação de microondas sobre Anagasta Kuhniella Zeller (1879) (Lepidoptera: Pyralidae) e seus dois agentes de controle biologico, Bracon hebertor (Say, 1836) (Hymenoptera: Braconidae) e Bacillus thuringiensis var. kurstaki (H:3a3b)
The application of Integrated Pest Management (IPM) means the utilization of efficient control methods which are ecologically safe and economicaly viable. Therefore, it is extremaly important to gather more information about the possible interactions between the different control agents, aimimg to optimize such a method. Microwaves (300 a 300.000 MHz), as we
Publicado em: 1998
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9. Modulation of Dehydration Tolerance in Soybean Seedlings (Dehydrin Mat1 Is Induced by Dehydration but Not by Abscisic Acid).
Germinated soybean (Glycine max L. cv Williams 82) seedlings subjected to rapid dehydration begin to lose the ability to recover when the relative water content of the plant decreases below 60%. The expanded cells of the hypocotyl appear more susceptible to dehydration-induced damage than do cells in the hypocotyl zone of cell growth. Pretreatment of seedlin
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10. Metabolic Dysfunction and Unabated Respiration Precede the Loss of Membrane Integrity during Dehydration of Germinating Radicles1
This study shows that dehydration induces imbalanced metabolism before loss of membrane integrity in desiccation-sensitive germinated radicles. Using a photoacoustic detection system, responses of CO2 emission and fermentation to drying were analyzed non-invasively in desiccation-tolerant and -intolerant radicles of cucumber (Cucumis sativa) and pea (Pisum s
American Society of Plant Physiologists.
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11. Rate of Dehydration and Cumulative Desiccation Stress Interacted to Modulate Desiccation Tolerance of Recalcitrant Cocoa and Ginkgo Embryonic Tissues1
Rate of dehydration greatly affects desiccation tolerance of recalcitrant seeds. This effect is presumably related to two different stress vectors: direct mechanical or physical stress because of the loss of water and physicochemical damage of tissues as a result of metabolic alterations during drying. The present study proposed a new theoretic approach to r
American Society of Plant Physiologists.
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12. Freezing Tolerance of Citrus, Spinach, and Petunia Leaf Tissue 1: Osmotic Adjustment and Sensitivity to Freeze Induced Cellular Dehydration
Seasonal variations in freezing tolerance, water content, water and osmotic potential, and levels of soluble sugars of leaves of field-grown Valencia orange (Citrus sinensis) trees were studied to determine the ability of citrus trees to cold acclimate under natural conditions. Controlled environmental studies of young potted citrus trees, spinach (Spinacia