Drought stress-induced changes in redox metabolism of barley (Hordeum vulgare L.)

In the present investigation, influence of water stress on redox metabolism was evaluated in the flag leaf and grains of four barley ( Hordeum vulgare L.) genotypes viz DWRB 101, 432 ICARDA, Jyoti and 430 ICARDA at 10th, 20th and 30th days after anthesis (DAA). Relative water content, electrolyte le...

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Bibliographic Details
Published in:Biologia futura 2021-09, Vol.72 (3), p.347-358
Main Authors: Kaur, Ekumjot, Bhardwaj, Rachana D., Kaur, Simarjit, Grewal, Satvir K.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Cell Biology
Droughts - mortality
Ecotoxicology
Hordeum - metabolism
Life Sciences
Neurobiology
Original Paper
Oxidation-Reduction
Oxidative Stress - drug effects
Oxidative Stress - physiology
Plant Sciences
Stress, Physiological - physiology
Zoology
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Summary:In the present investigation, influence of water stress on redox metabolism was evaluated in the flag leaf and grains of four barley ( Hordeum vulgare L.) genotypes viz DWRB 101, 432 ICARDA, Jyoti and 430 ICARDA at 10th, 20th and 30th days after anthesis (DAA). Relative water content, electrolyte leakage, antioxidative enzymes and their related metabolites were studied during drought stress. Relative water content was well maintained in both the tissues of DWRB 101 and 432 ICARDA. The upregulation of catalase at 20th DAA while ascorbate peroxidase, glutathione reductase and dehydro reductase at 30th DAA in the flag leaf and grains of DWRB 101 and 432 ICARDA may be responsible for lesser increase in H2O2 content as compared to other genotypes. Moreover, the downregulation of superoxide dismutase was comparatively higher in Jyoti and 430 ICARDA. The redox homeostasis was well established during the stress in DWRB 101 and 432 ICARDA by maintaining comparatively higher ratios of ascorbate/dehydroascorbate and reduced/oxidized glutathione. Therefore, scrutiny of data indicated that DWRB 101 and 432 ICARDA may perform better under drought stress in comparison with Jyoti and 430 ICARDA.
ISSN:2676-8615
2676-8607
DOI:10.1007/s42977-021-00084-2