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Differential Changes in D1 Protein Content and Quantum Yield of Wild and Cultivated Barley Genotypes Caused by Moderate and Severe Drought Stress in Relation to Oxidative Stress

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A Correction to this article was published on 13 November 2021

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Abstract

The aim of this study was to investigate the effects of drought stress on oxidative damage and efficiency of PSII photochemistry in barley and compare the varietal response of different genotypes including Yusof (tolerant), Moroc9-75 (sensitive), and wild barley (HS) to drought. Plants were subjected to different levels of soil water availability including control, moderate, and severe drought stress. Exposure to drought stress led to decrease in leaf water potential, biomass production, and stomatal conductance (gs) in all genotypes. Drought induced an increase in H2O2 content followed by increase in malondialdehyde (MDA) as a final result of lipid peroxidation. Drought stress also resulted in reduction of D1 protein content in all genotypes and decreased the maximal quantum yield of PSII photochemistry (FV/FM). These parameters were more affected in Moroc9-75 cultivar by drought stress compare to Yusof and HS genotype. Based on our results, drought-induced reactive oxygen species may decrease PSII photochemistry either through peroxidation of thylakoid membranes or interfering with D1 protein synthesis, necessary for proper function of PSII.

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This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

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Conceptualization and supervision: Ali Akbar Ghotbi-Ravandi; Methodology: Ali Akbar Ghotbi-Ravandi, Mahsa Sedighi; Formal analysis and investigation: Ali Akbar Ghotbi-Ravandi, Mahsa Sedighi, Keyvan Aghaei, Ahmad Mohtadi; Writing - original draft preparation: Ahmad Mohtadi; Writing - review and editing: Ali Akbar Ghotbi-Ravandi; Resources: Ali Akbar Ghotbi-Ravandi, Mahsa Sedighi, Keyvan Aghaei.

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Correspondence to Ali Akbar Ghotbi-Ravandi.

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Key message

Drought-induced oxidative stress led to reduction of photosystem II quantum yield of barley genotypes due to damage to D1 protein and inhibition of D1 regeneration. There is a genotypic variation in susceptibility to drought-accelerated photoinhibition among different wild and cultivated barley genotypes.

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Ghotbi-Ravandi, A.A., Sedighi, M., Aghaei, K. et al. Differential Changes in D1 Protein Content and Quantum Yield of Wild and Cultivated Barley Genotypes Caused by Moderate and Severe Drought Stress in Relation to Oxidative Stress. Plant Mol Biol Rep 39, 501–507 (2021). https://doi.org/10.1007/s11105-020-01264-5

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  • DOI: https://doi.org/10.1007/s11105-020-01264-5

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