Temperature Stress Induced Antioxidative and Biochemical Changes in Wheat (Triticum aestivum L.) Cultivars

Sarkar, Jayanwita; Chakraborty, B. N.; Chakraborty, Usha

doi:10.19071/jpsp.2016.v2.3076

Cited by 10 publications

(5 citation statements)

References 24 publications

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“…The reduced Chl content under heat stress could be explained by the reduced expression of Chl synthase (CS) gene as reported by Saha et al (2016) for the C4 plant species Setaria viridis. Similar to our observations in barley, the reduced Car under heat stress (at temperatures above 35 o C) was reported for bread wheat (Sarkar et al 2016) and durum wheat (Dias et al 2011). The high correlation observed between Chl content and PN under high temperatures may be caused by both the downregulation of Chl synthesis in the chloroplast and the accumulation of reactive oxygen species, which lead to Chl degradation in plants and the subsequently reduced PN (Dwivedi et al 2017).…”

Section: Discussionsupporting

confidence: 89%

Photosynthetic and yield performance of wild barley (Hordeum vulgare ssp. spontaneum) under terminal heat stress

Bahrami¹,

Arzani²,

Rahimmalek³

2019

Photosynt.

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Terminal heat stress is one of the major constraints of cereal production. A two-year field investigation was performed to assess the response of Hordeum vulgare ssp. spontaneum genotypes to terminal heat stress using gas-exchange parameters, photosystem efficiency, proline accumulation, cell membrane leakage, and grain yield traits. Results of analysis of variance revealed the significant effects of heat stress (E), genotype (G), and G × E on the studied traits. The results of linear regression analysis showed that yield loss was inversely correlated with the maximum quantum yield of PSII photochemistry (Fv/Fm) and chlorophyll content. Path-coefficient analysis revealed that high Chl contents were either directly related to the grain yield or indirectly through the higher net photosynthetic rate and higher Fv/Fm values under high temperatures at the reproductive growth stage. Overall, the adapted wild genotypes exhibited physiological mechanisms capable of sustainable maintaining their yield capacity and plasticity flow, which could be exploited by crossing with cultivated barley to introgress heat tolerance.

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Section: Discussionsupporting

confidence: 89%

Photosynthetic and yield performance of wild barley (Hordeum vulgare ssp. spontaneum) under terminal heat stress

Bahrami¹,

Arzani²,

Rahimmalek³

2019

Photosynt.

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“…Furthermore, according to authors, in young leaves of model system plant Chenopodium album increased SOD activity was followed by loss in leaf soluble protein content, whereas for a single CAT isozyme optimal temperature and stability is required, considering that the activity was showed only at up to 40 • C. This is in agreement with our results for young basil leaves under high temperature stress, which caused loss in leaf soluble proteins, induced SOD and A-POX activity for both heat-stress temperatures, and induced CAT activity only for 30 • C, while for 40 • C the activity of CAT decreased. To the best of our knowledge, there are no reports of antioxidant enzyme activity in basil under the heat stress conditions; however, our results are in accordance with previous research where heat stress caused the higher activity of SOD in 'Carrizo' citrange [36], and CAT and peroxidases in wheat genotypes [37] under 40 and 30 • C, respectively. Furthermore, as proved by statistical analysis, under the conditions of temperature stress significant positive correlation was found between various antioxidant enzymes and chlorophyll content, which is in accordance with the results of Almeselmani et al [19].…”

Section: Discussionsupporting

confidence: 92%

The Short-Term Metabolic Modulation of Basil (Ocimum basilicum L. cv. ‘Genovese’) after Exposure to Cold or Heat

Jakovljević

Momčilović

Bojović

et al. 2021

Plants

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Chilling stress in spring and mid-season heat stress are important environmental stresses that can significantly affect plant productivity. The objectives of this study were to understand the effects of cold (4 and 10 °C) or heat (30 and 40 °C) stress on biochemical and physiological traits in leaves and roots of basil (Ocimum basilicum L. cv. ‘Genovese’) young plants. After short-time exposure to mild and severe temperature stresses, both photosynthetic pigments’ and protein, as well as enzymatic and non-enzymatic defense components in basil leaves and roots, were quantified and compared with the control non-stressed plants. It was shown that both cold and heat treatment increase the content of chlorophyll a, chlorophyll b, and carotenoids. Chilling correlated with higher content of soluble proteins in leaves, whereas the concentration of these osmoprotectants in roots was higher under both cold and heat stress. For all tested antioxidant enzymes, higher activity was measured in leaves, and activity was related to temperature stress. SOD, CAT, A-POX, and P-POX activities was induced under heat stress, while the higher activity of SOD, CAT, P-POX, and G-POX was recorded under cold stress, compared to the control. In addition to the induced activity of enzymatic components, the content of secondary metabolites including total phenolics, flavonoids, and total anthocyanins, was several times higher compared to the non-stressed plants. Furthermore, total phenolic content was higher in roots than in leaves. Significant positive correlation can be seen among photosynthetic pigments, SOD, total phenolics, and flavonoids under severe temperature stress (4 or 40 °C) in basil leaves, while for roots, positive correlation was found in the content of secondary metabolites and activity of CAT or peroxidases. Obtained results are discussed in terms of phenotyping of O. basilicum cv. ‘Genovese’ response to heat and chilling stress, which should contribute to a better understanding of merged responses to cold and heat tolerance of this valuable crop.

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“…Liu et al [93] reported decreased SOD and CAT activities with corresponding suppressed OsSOD, OsCAT, and OsAPX2 expression, resulting in higher accumulation of H 2 O 2 (1.27-fold) in germinating rice seeds under HT stress. Sarkar et al [198] found elevated activity of CAT and POX in wheat genotypes under HT stress (30 • C). In another example, Zandalinas et al [199] observed increased GSH and AsA content in Carrizo citrange along with enhanced SOD and CAT activity compared with Cleopatra mandarin under HT stress (40 • C).…”

Section: Antioxidant Defense In Plants Under High Temperaturementioning

confidence: 99%

Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

et al. 2020

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Global climate change and associated adverse abiotic stress conditions, such as drought, salinity, heavy metals, waterlogging, extreme temperatures, oxygen deprivation, etc., greatly influence plant growth and development, ultimately affecting crop yield and quality, as well as agricultural sustainability in general. Plant cells produce oxygen radicals and their derivatives, so-called reactive oxygen species (ROS), during various processes associated with abiotic stress. Moreover, the generation of ROS is a fundamental process in higher plants and employs to transmit cellular signaling information in response to the changing environmental conditions. One of the most crucial consequences of abiotic stress is the disturbance of the equilibrium between the generation of ROS and antioxidant defense systems triggering the excessive accumulation of ROS and inducing oxidative stress in plants. Notably, the equilibrium between the detoxification and generation of ROS is maintained by both enzymatic and nonenzymatic antioxidant defense systems under harsh environmental stresses. Although this field of research has attracted massive interest, it largely remains unexplored, and our understanding of ROS signaling remains poorly understood. In this review, we have documented the recent advancement illustrating the harmful effects of ROS, antioxidant defense system involved in ROS detoxification under different abiotic stresses, and molecular cross-talk with other important signal molecules such as reactive nitrogen, sulfur, and carbonyl species. In addition, state-of-the-art molecular approaches of ROS-mediated improvement in plant antioxidant defense during the acclimation process against abiotic stresses have also been discussed.

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Temperature Stress Induced Antioxidative and Biochemical Changes in Wheat (Triticum aestivum L.) Cultivars

Cited by 10 publications

References 24 publications

Photosynthetic and yield performance of wild barley (Hordeum vulgare ssp. spontaneum) under terminal heat stress

Photosynthetic and yield performance of wild barley (Hordeum vulgare ssp. spontaneum) under terminal heat stress

The Short-Term Metabolic Modulation of Basil (Ocimum basilicum L. cv. ‘Genovese’) after Exposure to Cold or Heat

Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

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