Antioxidant response and Lea genes expression under exogenous ABA and water deficit stress in wheat cultivars contrasting in drought tolerance

Kaur, Manvir; Gupta, Anil Kumar; Zhawar, Vikramjit Kaur

doi:10.1007/s13562-012-0180-8

Cited by 27 publications

(20 citation statements)

References 30 publications

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“…In contrast to line 64, a higher protein expression was observed in line 91 when the seeds were subjected to different levels of water stress, as shown in the electrophoresis results. This same trend was observed by Kaur et al (2014), who observed that six of ten LEA protein genes studied were more expressed in tolerant wheat cultivars when subjected to water stress. In line 91, it was observed the presence of highlighted lower molecular weight bands after 18 and 24 h of soaking in -0.6 MPa water potential and 18 h in -0.9 MPa water potential.…”

Section: Discussionsupporting

confidence: 85%

“…In a study of two wheat cultivars contrasting in their water stress tolerance, Kaur et al (2014) found that six of the ten analyzed LEA protein genes were more expressed under water stress conditions in the tolerant cultivar. Ristic et al (1991) found a HSP band of approximately 45 kDa in leaves from a heat-and water stress-tolerant maize line that was not expressed in the susceptible lines.…”

Section: Introductionmentioning

confidence: 99%

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Heat-resistant protein expression during germination of maize seeds under water stress

Abreu¹,

Neta²,

Pinho³

et al. 2016

Genet. Mol. Res.

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ABSTRACT. Low water availability is one of the factors that limit agricultural crop development, and hence the development of genotypes with increased water stress tolerance is a challenge in plant breeding programs. Heat-resistant proteins have been widely studied, and are reported to participate in various developmental processes and to accumulate in response to stress. This study aimed to evaluate heat-resistant protein expression under water stress conditions during the germination of maize seed inbreed lines differing in their water stress tolerance. Maize seed lines 91 and 64 were soaked in 0, -0.3, -0.6, and -0.9 MPa water potential for 0, 6, 12, 18, and 24 h. Line 91 is considered more water stress-tolerant than line 64. The analysis of heat-resistant protein expression was made by gel electrophoresis and spectrophotometry. In general, higher expression of heat-resistant proteins was observed in seeds from line 64 subjected to shorter soaking periods and lower water potentials. However, in the water stress-tolerant line 91, a higher expression was observed in seeds that were subjected to -0.3 and -0.6 MPa water potentials. In the absence of water stress, heat-resistant protein expression was reduced with increasing soaking period. Thus, there was a difference in heat-resistant protein expression among the seed lines differing in water stress tolerance. Increased heatresistant protein expression was observed in seeds from line 91 when subjected to water stress conditions for longer soaking periods.

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Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Heat-resistant protein expression during germination of maize seeds under water stress

Abreu¹,

Neta²,

Pinho³

et al. 2016

Genet. Mol. Res.

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“…Seeds of wheat cultivars PBW 343 (drought susceptible) and C 306 (drought tolerant) were grown in dark at 25°C in petri-dishes (Kaur et al 2014) on autoclaved distilled water for 4 days. Mannitol 6 % was applied on 4th day as WS, ABA (20 lM) and 6 % mannitol in 20 lM ABA as ABA ?…”

Section: Plant Materialsmentioning

confidence: 99%

“…Earlier experiments conducted with wheat cultivars PBW 343 and C 306 showed decline in antioxidant potential in terms of APX, CAT, POX, GR and reducedascorbate under water stress (WS), which was improved on supplying of ABA (Kaur et al 2014). The present study was planned to incorporate other parameters of antioxidant metabolism such as Monodehydroascorbate reductase (MDHAR), DHAR, GPX, GST in wheat cultivars PBW 343 and C 306 under stress induced by water deficiency and ABA.…”

Section: Introductionmentioning

confidence: 96%

“…ABA is reported to activate antioxidant system in plants, viz., superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), peroxidase (POX), glutathione reductase (GR), reduced-glutathione and ascorbate, and to reduce oxidative stress in terms of decline in lipid peroxidation, measured as malondialdehyde (MDA) content (Kaur et al 2014). Antioxidants by detoxification of cellular toxicity play an important role in stress tolerance.…”

Section: Introductionmentioning

confidence: 99%

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ABA improvement of antioxidant metabolism under water stress in two wheat cultivars contrasting in drought tolerance

Kaur

Gupta

Zhawar

2014

Ind J Plant Physiol.

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Antioxidant metabolism was studied in two wheat cultivars PBW 343 (drought susceptible) and C 306 (drought tolerant) under exogenous ABA, water stress (WS) and ABA plus WS. C 306 showed lesser increases in ROS (superoxide anions) and protein carbonylation in shoots and roots under WS as compared to PBW 343. C 306 did not show increases in glutathione peroxidase, glutathione-S-transferase, total glutathione under WS, while PBW343 showed such increases only at early stage, while at later stages of stress, the decline in levels of these parameters was improved on supplying ABA. Monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR) activity were not induced under ABA in both the cultivars but under WS MDHAR was induced only in C 306, while in case of DHAR greater increase was observed in C 306 than in PBW343.

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Root yield, antioxidant capacities, and hormone contents in different drought-tolerant sweet potato cultivars treated with ABA under early drought stress

et al. 2020

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Antioxidant response and Lea genes expression under exogenous ABA and water deficit stress in wheat cultivars contrasting in drought tolerance

Cited by 27 publications

References 30 publications

Heat-resistant protein expression during germination of maize seeds under water stress

Heat-resistant protein expression during germination of maize seeds under water stress

ABA improvement of antioxidant metabolism under water stress in two wheat cultivars contrasting in drought tolerance

Root yield, antioxidant capacities, and hormone contents in different drought-tolerant sweet potato cultivars treated with ABA under early drought stress

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