Abstract
Salt stress cause enormous loss in crop productivity and yield around the globe, which jeopardizes agro-ecosystem, and significantly affects food production. Wheat is consumed all over the world, but is highly susceptible under salt stress conditions. In the present study, we investigated the independent and co-application of γ-aminobutyric acid (GABA) and potassium (K) to counteract salt-induced tolerance mechanisms, growth attributes and yield traits. Both GABA and K play indispensable roles in counteracting the deleterious impacts of oxidative stress indicators with activated defense mechanisms (ascorbate–glutathione pathway and glyoxalase system), improved nitrogen and carbon assimilation, and photosynthesis-related traits in salt stressed wheat plants. Moreover, GABA and K application induced considerable changes in osmolyte concentration, stomatal dynamics, and improved yield traits under salt stress in wheat plants. Overall, current study showed the significant outcomes of co-application of GABA and K in alleviating salt stress-induced adversities in wheat, and could be manipulated for developing salt tolerant wheat plants.
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MIRK is gratefully acknowledging the SERB-DST Grant (SRG/2020/001004).
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Conceptualization, MIRK; experimentation, data analysis and software, SK, FN and KJ; Writing—Original draft preparation, SK and MIRK; Writing – Review and editing, MIRK, SK and FN. All authors have read and agreed to the published version of the manuscript.
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Kumari, S., Nazir, F., Jain, K. et al. GABA and Potassium Modulates Defence Systems, Assimilation of Nitrogen and Carbon, and Yield Traits Under Salt Stress in Wheat. J Plant Growth Regul 42, 6721–6740 (2023). https://doi.org/10.1007/s00344-023-10992-3
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DOI: https://doi.org/10.1007/s00344-023-10992-3