Characterization of water-stress tolerant cotton cultivars based on plant growth and in activity of antioxidant enzymes

Rodrigues, Jessica Damasceno; Silva, Carliane Rebeca Coelho da; Pereira, Rennan Fernandes; Ramos, Jean Pierre Cordeiro; Filho, Péricles de Albuquerque Melo; Cavalcanti, José Jaime Vasconcelos; Santos, Roseane Cavalcanti dos

doi:10.5897/ajar2016.11301

Cited by 9 publications

(1 citation statement)

References 17 publications

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“…In the early cultivar CNPA 7MH, there was no benefit of PVT, at least at the concentration used, possibly because, for being a hybrid resulting from the cross G. gossypium var. latifolium x Marie Gallant, this cultivar has fixed a set of characteristics of adaptation to a dry environment, allowing intrinsic adjustments when the signs of water suppression are identified by the plant (Rodrigues et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Pyruvic acid as attenuator of water deficit in cotton plants varying the phenological stage

et al. 2023

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The lack of water during crop growth causes damage to any production system, especially when it occurs during the initial establishment or beginning of the reproductive stage. Although cotton can be properly managed in regions with water limitation, its yield is affected at different levels according to the genetics of the cultivar adopted. Exogenous application of some organic components has shown a stress-mitigating effect and can be a valuable procedure to enhance the yield of water stress-sensitive cultivars. The objective of this work was to evaluate the benefits of exogenous application of pyruvic acid (100 µM) in cotton plants under water deficit varying the phenological stage of the crop. The experiment was conducted in a greenhouse, where the plants were grown in pots and subjected to seven days of water suspension, initiated individually in stages V2 and B1. Each pot contained two plants. The treatments adopted were: T1 - control, T2 - water suppression; and T3 - water suppression + pyruvate application. The design was randomized blocks in a factorial scheme (3 × 3) with three replicates. The reductions in gas exchange and growth of the cultivars BRS Seridó, CNPA 7MH and FM 966 were more significant in the reproductive stage, especially for FM 966, which was more sensitive. Pyruvate application reduced the effects of water suppression on boll production by 31% in BRS Seridó and 34% in CNPA 7MH and FM 966.

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Section: Resultsmentioning

confidence: 99%

Pyruvic acid as attenuator of water deficit in cotton plants varying the phenological stage

et al. 2023

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Improving tolerance of cotton ( Gossypium hirsutum L.) to drought and heat stress

Ul‐Allah

Naeem

2020

CABI Reviews

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Drought and heat stress are burning issues for agriculture in the climate change scenario due to which lower yield and production of crops have been projected. In this situation, sustainable production of food and fiber crops is a challenge. Cotton (Gossypium hirsutum L.) is a major cash crop of the world including Pakistan, and its growth and yield are highly influenced by drought and heat stress. Development of drought and heat stress tolerant genotype is the most sustainable way to cope with this stress. In this review, different tolerance mechanisms of the cotton plant against heat and drought stress are discussed. These tolerance mechanisms include morphological, physiological, biochemical, and genetic adaptations of cotton plant to the external stress. Moreover, different strategies to improve the tolerance of cotton against heat and drought stress have also been discussed. As both stresses complement each other in most of the cases and some mechanisms are the same for both stresses, therefore, both are discussed together. Prospects and challenges have also been discussed.

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xpression of aquaporin subtypes (GhPIP1;1, GhTIP2;1, and GhSIP1;3) in cotton (Gossypium hirsutum L.) submitted to salt stress

et al. 2019

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Salinization leads to several worldwide damages in agricultural regions, mainly in semiarid regions where leaching of salt is poor due to limited and erratic rainfall. Cotton (Gossypium hirsutum L.) is a Malvaceae with wide genetic variability to salt stress. The identification of salinity tolerant genotypes is a dynamic target in a breeding program, and the selection is often based on plant phenotypes. Molecular markers are reliable tools to aid in these selection procedures. Aquaporin (AQPs) are channel proteins that play fundamental role in water relations and tolerance to environmental stresses. Plants have fine regulation of water transport through AQPs activities. In order to evaluate the AQP expressions of different cotton cultivars submitted to salt stress, we use molecular and physiological tools, based on RT-qPCR and gas exchange assays. Seven cultivars were submitted to 95 mM NaCl, started at V3 stage (21 days after emergence), during 72 h. At the end of stress treatment, root tissues were used to total RNA extraction, followed by cDNA synthesis and RT-qPCR analyzes. Three sets of specific primers were used, drawn from AQP accessions deposited in NCBI. Additionally, full expanded leaves were used to gas exchange assays and to estimate the relative water content. The dry matter of the shoots was also evaluated. Based on pattern of AQPs transcripts, we found that all semiarid tolerant cultivars (BRS Seridó, 7MH, CNPA MT 2009 152 and BRS 416) showed downregulation of AQP subtypes, mainly GhPIP1;1 and GhTIP2;1 whose action is characterized as tolerant to salinity. The results of gas exchanges, relative water content and dry matter were consistent with the molecular findings in these cultivars, confirming that GhPIP1;1 and GhTIP2;1, located at plasma membrane and vacuoles, respectively, could be adopted as AQP markers for identification of cotton tolerant to salt stress.

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Characterization of water-stress tolerant cotton cultivars based on plant growth and in activity of antioxidant enzymes

Cited by 9 publications

References 17 publications

Pyruvic acid as attenuator of water deficit in cotton plants varying the phenological stage

Pyruvic acid as attenuator of water deficit in cotton plants varying the phenological stage

Improving tolerance of cotton ( Gossypium hirsutum L.) to drought and heat stress

xpression of aquaporin subtypes (GhPIP1;1, GhTIP2;1, and GhSIP1;3) in cotton (Gossypium hirsutum L.) submitted to salt stress

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