Effect of short-term heat stress on total sugars, proline and some antioxidant enzymes in moth bean (Vigna aconitifolia)

Harsh, A.; Sharma, Yogesh Kumar; Joshi, Uma; Rampuria, Sakshi; Singh, Govind; Kumar, Sushil; Sharma, Ramavtar

doi:10.1016/j.aoas.2016.02.001

Cited by 113 publications

(67 citation statements)

References 28 publications

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“…These cultivars could adjust their osmotic balance and cellular homeostasis, which is one of the tolerance mechanisms. Similar results were reported in lettuce [42] and moth bean [43]. In this study, we found higher relative water content in heat-tolerant alfalfa, which was in agreement with soluble sugar and protein content, thus entailing great implications for heat tolerance [27].…”

Section: Discussionsupporting

confidence: 90%

Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance

Wassie

Zhang

et al. 2019

Agronomy

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Alfalfa (Medicago sativa L.) is a valuable forage legume, but its production is largely affected by high temperature. In this study, we investigated the effect of heat stress on 15 alfalfa cultivars to identify heat-tolerant and -sensitive cultivars. Seedlings were exposed to 38/35 °C day/night temperature for 7 days and various parameters were measured. Heat stress significantly reduced the biomass, relative water content (RWC), chlorophyll content, and increased the electrolyte leakage (EL) and malondialdehyde (MDA) content of heat-sensitive alfalfa cultivars. However, heat-tolerant cultivars showed higher soluble sugar (SS) and soluble protein (SP) content. The heat tolerance of each cultivar was comprehensively evaluated based on membership function value. Cultivars with higher mean membership function value of 0.86 (Bara310SC) and 0.80 (Magna995) were heat tolerant, and Gibraltar and WL712 with lower membership function value (0.24) were heat sensitive. The heat tolerance of the above four cultivars were further evaluated by chlorophyll a fluorescence analysis. Heat stress significantly affected the photosynthetic activity of heat-sensitive cultivars. The overall results indicate that Bara310SC and WL712 are heat-tolerant and heat-sensitive cultivars, respectively. This study provides basic information for understanding the effect of heat stress on growth and productivity of alfalfa.

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Section: Discussionsupporting

confidence: 90%

Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance

Wassie

Zhang

et al. 2019

Agronomy

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“…The development of long roots or tubers can help avoiding drought stress but may come at the costs of reduced leaf, pod, or bean productivity 12 . Traits to tolerate heat tolerance include membrane stability, pollen viability, and anther dehiscence, and decline in GABA (γ-aminobutyric acid) declination and increase in antioxidant enzymes, among other traits during plant development 10,13,14 . Traits related to salinity tolerance include relative quantum yield of photosystem II, leaf Na+ and K+ concentrations, malondialdehyde (MDA) levels, and antioxidant enzyme activities 15,16 .Major production challenges related to biotic stress for several Vigna crops include legume pod borer and Yellow Mosaic Disease (YMD) (R. Nair, pers.…”

mentioning

confidence: 99%

Mapping patterns of abiotic and biotic stress resilience uncovers conservation gaps and breeding potential of Vigna wild relatives

Zonneveld

Rakha

Tan

et al. 2020

Sci Rep

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this study provides insights in patterns of distribution of abiotic and biotic stress resilience across Vigna gene pools to enhance the use and conservation of these genetic resources for legume breeding. Vigna is a pantropical genus with more than 88 taxa including important crops such as V. radiata (mung bean) and V. unguiculata (cowpea). our results show that sources of pest and disease resistance occur in at least 75 percent of the Vigna taxa, which were part of screening assessments, while sources of abiotic stress resilience occur in less than 30 percent of screened taxa. This difference in levels of resilience suggests that Vigna taxa co-evolve with pests and diseases while taxa are more conservative to adapt to climatic changes and salinization. twenty-two Vigna taxa are poorly conserved in genebanks or not at all. this germplasm is not available for legume breeding and requires urgent germplasm collecting before these taxa extirpate on farm and in the wild. Vigna taxa, which tolerate heat and drought stress are rare compared with taxa, which escape these stresses because of short growing seasons or with taxa, which tolerate salinity. We recommend prioritizing these rare Vigna taxa for conservation and screening for combined abiotic and biotic stress resilience resulting from stacked or multifunctional traits. the high presence of salinity tolerance compared with drought stress tolerance, suggests that Vigna taxa are good at developing salt-tolerant traits. Vigna taxa are therefore of high value for legume production in areas that will suffer from salinization under global climate change.In this paper, we focus on Vigna, to understand patterns of distribution of abiotic and biotic stress resilience across legume gene pools. Vigna is a complex and pantropical genus of more than 88 taxa, which are principally diploid and selfing. The genus includes a number of important legume crops for food and nutrition security in tropical Asia and Africa such as V. radiata (mung bean) and V. unguiculata (cowpea, vegetable cowpea, and yard-long bean) as well as several neglected and underutilized crops such as V. aconitifolia (moth bean) and V. subterranea (Bambara groundnut).The optimum temperature range for legume crops is between 10-36 °C and various climatic models predict that temperatures will increase on average with 4 °C by the end of this century 7 . A principal production challenge, which is considered in Vigna breeding is therefore heat stress >40 °C 8-10 . Other production challenges relate to drought stress, water logging, and salinity 8-10 , and in the case of cowpea also phosphorus-use inefficiency 8 . Vigna wild relatives could contain traits to respond to these abiotic-stress related production challenges.Traits of breeding interest to escape heat and drought stress include early flowering and maturation. Important morphological and physiological traits in Vigna screening for drought tolerance are the number and diameter of xylem vessels, root suberization, stomatal leaf conductance, and low leaf hydraul...

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“…A lot of attention is paid to biochemical response to stress adaptations. Superoxide dismutase, catalase and peroxidases establish the first chain of protection against reactive oxygen species (Grant, 2000;Sunkar, 2006;Rai et al, 2015;Harsh et al, 2016). The pigmental complex is very sensitive to environmental temperature changes (Huang, 2004;Olmos et al, 2007;Babenko et al, 2014;Gosavi et al, 2014;Rodríguez et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Various antioxidant responses to hyperthermia in anatomically different species of the genus Rosa

Nuzhyna

Tkachuk

2019

Biosys. divers.

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The heat and drought resistance of plants depend on their anatomical and biochemical features. In the present study, the adaptive features of three species of wild rose (Rosaceae, Rosales) under the short-term impact of high-temperature stress have been characterized. Plants of the species Rosa donetzica Dubovik, R. reversa Waldst. et Kit. and R. spinosissima L. were exposed to a temperature of 40 degrees C for 3 hours, following which peroxidase and superoxide dismutase activity, photosynthetic pigments and flavonoids’ content, and lipid peroxide oxidation level in the leaf were determined. In our investigation, the anatomical structure of leaves and drought resistance of three species of Rosa were studied. Xeromorphic features are the most expressed for R. reversa and R. spinosissima and almost absent for R. donetzica. It has been established that R. spinosissima is photophilous whereas R. donetzica is shade-tolerant. The relatively lower development of epidermic tissue in R. donetzica could probably contribute to more active destruction of the pigment complex under high temperature stress. The obtained data about changes in activity of peroxidase, superoxide dismutase, content of photosynthetic pigments and flavonoids, and level of lipid peroxidation indicate the low heat resistance of R. donetzica in comparison with the other two species. R. reversa, R. spinosissima were more tolerant to short-term hyperthermia. They showed faster antioxidant response, mainly due to the induction of peroxidase activity under stress. The species with the most expressed xerophytic features of anatomical structures have rapid antioxidant response and are more resistant to short-term hyperthermia. The induction of some activity of antioxidant enzymes "in reserve" is a less effective form of adaptation in wild roses. Such activation of enzymes is observed in plants with a more mesophytic structure. Flavonoids and superoxide dismutase were thermolabile to short-term influence of high temperature; therefore they play an insignificant role as antioxidants in the protecton against oxidative stress caused by high temperature stress in wild roses.

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Effect of short-term heat stress on total sugars, proline and some antioxidant enzymes in moth bean (Vigna aconitifolia)

Cited by 113 publications

References 28 publications

Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance

Effect of Heat Stress on Growth and Physiological Traits of Alfalfa (Medicago sativa L.) and a Comprehensive Evaluation for Heat Tolerance

Mapping patterns of abiotic and biotic stress resilience uncovers conservation gaps and breeding potential of Vigna wild relatives

Various antioxidant responses to hyperthermia in anatomically different species of the genus Rosa

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