2000
DOI: 10.1590/s0100-204x2000000700015
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Isolation of a cotton NADP(H) oxidase homologue induced by drought stress

Abstract: -The aim of this study was to identify and isolate genes that are differentially expressed in four selected cotton (Gossypium hirsutum L.) genotypes contrasting according to their tolerance to water deficit. The genotypes studied were Siokra L-23, Stoneville 506, CS 50 and T-1521. Physiological, morphological and developmental changes that confer drought tolerance in plants must have a molecular genetic basis. To identify and isolate the genes, the mRNA Differential Display (DD) technique was used. Messenger R… Show more

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Cited by 9 publications
(3 citation statements)
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“…The distance from the first main lateral root to transition zone is increased due to drought stress in cotton, and also the increase in taproot weight, seedling vigor, the amount of lateral roots, and also the development of root system is rapid [15]. The temperature of canopy, the discrimination of carbon isotope, leaf water content, conductance of stomata, and rate of photosynthesis also reduce the rate of transpiration due to the effect of drought [16]. Cotton crop has taproot system.…”
Section: Drought Stressmentioning
confidence: 99%
“…The distance from the first main lateral root to transition zone is increased due to drought stress in cotton, and also the increase in taproot weight, seedling vigor, the amount of lateral roots, and also the development of root system is rapid [15]. The temperature of canopy, the discrimination of carbon isotope, leaf water content, conductance of stomata, and rate of photosynthesis also reduce the rate of transpiration due to the effect of drought [16]. Cotton crop has taproot system.…”
Section: Drought Stressmentioning
confidence: 99%
“…Like other plants, cacao plants have adapted several survival mechanisms under drought conditions, which can be exploited to identify drought tolerant genotypes that maintain good productivity under conditions of low soil water availability [8] . When subjected to water stress, plants exhibit: (i) inhibition of growth and development, (ii) changes in the roots/shoot ratio and increases in biomass allocation to roots rather than shoots [9] , (iii) increases in root length which facilitate the exploration of larger soil volumes, and consequently increases water and nutrients absorption [10] , [8] , (iv) production of reactive oxygen species (ROS) [11] , [12] , (v) changes in the activity of enzymes involved in the antioxidant metabolism [13] , (vi) differential gene expression [14] and (vii) changes in the absorption kinetics of mineral nutrients [15] .…”
Section: Introductionmentioning
confidence: 99%
“…Diversas podem ser as respostas de tolerância dos organismos aos estresses como a resposta diferencial de cultivares MACHADO NETO et al, 2004;TEIXEIRA et al, 2008), via ativação (NEPOMUCENO et al, 2001VERDOY et al, 2004) ou desativação (NEPOMUCENO et al, 2000) de genes que codificarão proteínas específicas, finalizando com diversas respostas fisiológicas, metabólicas e de desenvolvimento. Entre estas respostas ao estresse, encontramos fatores de transcrição (ZHU, 2001), proteínas de diversas classes, como as BiP (Binding Protein) (KALINSKI et al, 1995), Peroxidases (SIEGEL, 1993), proteínas LEA (Late embryogenesis abundant protein) (VERDOY et al, 2004), proteínas ricas em prolina (PRPs) (VERDOY et al, 2004) e Proteínas de Choque Térmico (Heat Shock Protein -HSPs), as quais deveriam ser específicas ao estresse de calor, porém, também são sintetizadas na presença de estresse hídrico ou como resposta universal ao estresse (VIERLING, 1991), sendo encontradas desde em procariotos até em eucariotos.…”
Section: Introductionunclassified