Changes in free radical generation, metabolites and antioxidant defense machinery in hyacinth bean (Lablab purpureus. L) in response to high temperature stress

Krishna, K. R.; Tiwari, Garima; Singh, P. K.

doi:10.1007/s11738-015-1791-1

Cited by 20 publications

(11 citation statements)

References 53 publications

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“…In our study, the chickpeas had increased activity of SOD (catalyses dismutation of superoxides), and CAT (dissociates hydrogen peroxide under individual heat or drought stress), which was in accordance with the rise in MDA and H 2 O 2 in leaves and seeds. These findings concur with studies on drought-stressed plants of wheat (Devi et al 2012), soybean (Akitha Devi and Giridhar 2015) and hyacinth bean (Rai et al 2015), and heat-stressed plants of chickpea , wheat (Kumar et al 2013a;Wang et al 2015) and cucurbit species (Ara et al 2013). In the combined heat + drought stress treatment, tolerant genotypes had higher CAT activity in leaves and seeds than sensitive genotypes.…”

Section: Discussionsupporting

confidence: 88%

Effects of individual and combined heat and drought stress during seed filling on the oxidative metabolism and yield of chickpea (Cicer arietinum) genotypes differing in heat and drought tolerance

et al. 2017

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Drought and heat stress are two major constraints that limit chickpea (Cicer arietinum L.) yield, particularly during seed filling. The present study aimed (i) to assess the individual and combined effects of drought and heat stress on oxidative metabolism during seed filling, and (ii) to determine any genetic variation in oxidative metabolism among genotypes differing in drought and heat tolerance and sensitivity. The plants were raised in outdoor conditions with two different times of sowing, one in November (normal-sown, temperatures <32°C−20°C (day–night) during seed filling), and the other in February (late-sown, temperatures >32°C−20°C (day–night) during seed filling). Plants were regularly irrigated to prevent any water shortage until the water treatments were applied. At both sowing times, the drought treatment was applied during seed filling (at ~75% podding) by withholding water from half of the pots until the relative leaf water content (RLWC) of leaves on the top three branches reached 42–45%, whereas leaves in the fully irrigated control plants were maintained at RLWC 85–90%. Drought-stressed plants were then rewatered and maintained under fully irrigated conditions until maturity. Several biochemical parameters were measured on the leaves and seeds at the end of the stress treatments, and seed yield and aboveground biomass were measured at maturity. Individual and combined stresses damaged membranes, and decreased PSII function and leaf chlorophyll content, more so under the combined stress treatment. The levels of oxidative molecules (malondialdehyde (MDA) and H2O2) markedly increased compared with the control plants in all stress treatments, especially across genotypes in the combined heat + drought stress treatment (increases in leaves: MDA 5.4–8.4-fold and H2O2 5.1–7.1-fold; in seeds: MDA 1.9–3.3-fold and H2O2 3.8–7.9-fold). The enzymatic and non-enzymatic antioxidants related to oxidative metabolism increased under individual stress treatments but decreased in the combined heat + drought stress treatment. Leaves had higher oxidative damage than seeds, and this likely inhibited their photosynthetic efficiency. Yields were reduced more by drought stress than by heat stress, with the lowest yields in the combined heat + drought stress treatment. Heat- and drought-tolerant genotypes suffered less damage and had higher yields than the heat- and drought-sensitive genotypes under the individual and combined stress treatments, suggesting partial cross-tolerance in these genotypes. A drought-tolerant genotype ICC8950 produced more seed yield under the combined heat + drought stress than other genotypes, and this was associated with low oxidative damage in leaves and seeds.

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Section: Discussionsupporting

confidence: 88%

Effects of individual and combined heat and drought stress during seed filling on the oxidative metabolism and yield of chickpea (Cicer arietinum) genotypes differing in heat and drought tolerance

et al. 2017

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“…Accumulation of low concentration of soluble sugars, such as glucose and sucrose under stress stimulates the activity of antioxidant enzymes (Boriboonkaset et al, 2012). Similar correlation study between antioxidant enzymes and osmo-protectants has been reported by Rai et al, (2015) in hyacinth bean and Harsh et al, (2016) in moth bean under high temperature stress.…”

Section: Sugar Profilingsupporting

confidence: 87%

Induction Temperature Enhances Antioxidant Enzyme Activity and Osmoprotectants in Tomato

Biradar¹,

Laxman²,

Namratha³

et al. 2019

Int.J.Curr.Microbiol.App.Sci

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“…Висока чутливість фотосинтетичного апарату рослин також використовується як маркер негативного впливу факторів довкілля (Chen et al, 2012;Ashraf and Harris, 2013;Martinazzo et al, 2013). Дослідження адаптивних механізмів проводили в основному на сільськогосподарських культурах (Sunkar, 2006;Rai et al, 2015;Rodríguez et al, 2015), у той час як сукулентам не приділяли достатньої уваги (Ardelean, 2014). Сукуленти, як правило, характеризуються високою посухо-та теплостійкістю.…”

Section: вступunclassified

Species-specific response to acute hyperthermal stress of Haworthia (Asphodelaceae) plants

Nuzhyna

Gaidarzhy

Aviekin

2017

Regul. Mech. Biosyst.

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An increase in environmental temperature is one of the most common stress factors for plant organisms. The study of the plants’ adaptation to stress factors remains extremely important and relevant. This article presents the results of a acute short-term influence of hyperthermia on species of two subgenera of the genus Haworthia Duval. We investigated the different levels of antioxidant protection and damage degree of the members of two subgenera of the genus Haworthia at the biochemical level, measuring the lipid peroxidation, superoxide dismutase and peroxidase activities, total flavonoid content and content of photosynthetic pigments with a spectrophotometer. To determine the drought tolerance of plants, the water supply of tissues, water shortage and loss of water after an hour of wilting were measured. The values for different groups were compared by ANOVA followed by the Tukey multiple comparison test. The studied plants were warmed in a thermostat at temperatures of 40 °C and 50 °C for three hours under the conditions of natural light. The control group of plants was kept at 25 °C. The research has shown that H. attenuata, H. limifolia and H. cymbiformis are characterized with the increase of concentration of malonic dialdehyde at 40 °C and 50 °C, but a significant difference of values wasn’t received,which indicates the relative resistance of these plants to the influence of high temperatures. The sharp increase of temperature causes the highest level of lipid peroxidation in H. parksiana plants, along with which, warming to 50 °C launches a mechanism of activation and synthesis of superoxide dismutase and flavonoids for the plants. The studied species of the subgenus Haworthia have a photosynthetic system relatively resistant to thermal stress in comparison to the subgenus Hexangulares. H. limifolia plants have a slight inhibition of photosynthesis. The adaptation of H. cymbiformis to thermal stress is due to the strategy of accumulation of a pool of active enzymes, superoxide dismutase, peroxidase, flavonoids under normal conditions and the activation of new peroxidase enzymes as a result of stress. H. attenuata is characterized by activation of new enzymes of superoxide dismutase and peroxidase under stress. It was found that H. cymbiformis and H. attenuata are more heat resistant in comparison with the other two species. Acute short-term hyperthermia has a different influence on the antioxidant system of different species of Haworthia. H. limifolia has the highest drought tolerance, H. cymbiformis has the lowest, the other two species from different subgenera have similar drought tolerance indicators. We did not find any dependence of the mechanisms of action of the antioxidant system under hyperthermia on the type of adaptation to arid conditions at the anatomical level in plants of different subgenera of the genus Haworthia.

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Changes in free radical generation, metabolites and antioxidant defense machinery in hyacinth bean (Lablab purpureus. L) in response to high temperature stress

Cited by 20 publications

References 53 publications

Effects of individual and combined heat and drought stress during seed filling on the oxidative metabolism and yield of chickpea (Cicer arietinum) genotypes differing in heat and drought tolerance

Effects of individual and combined heat and drought stress during seed filling on the oxidative metabolism and yield of chickpea (Cicer arietinum) genotypes differing in heat and drought tolerance

Induction Temperature Enhances Antioxidant Enzyme Activity and Osmoprotectants in Tomato

Species-specific response to acute hyperthermal stress of Haworthia (Asphodelaceae) plants

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