Abiotic Stress Tolerance in Plants by Priming and Pretreatment with Hydrogen Peroxide
Being a member of the reactive oxygen species, hydrogen peroxide (H2O2) is involved in signaling pathways associated with diverse antioxidant responses during abiotic stress. Thus, priming with H2O2 enables the seeds or seedlings to activate their antioxidant machineries and acclimatize prior to abiotic stress exposures. Hence, H2O2-priming actually hardens the plants to better cope with suboptimal conditions. This chapter discusses on the displayed mechanisms of H2O2-mediated tolerance in plants subjected to diverse abiotic stresses like salinity, drought, heat, cold and heavy metals.
KeywordsHydrogen peroxide Reactive oxygen species Priming Signaling Antioxidants Abiotic stress Tolerance
Financial assistance from Council of Scientific and Industrial Research (CSIR), Government of India, through the research grant [38(1387)/14/EMR-II], Science and Engineering Research Board, Government of India, through the grant [EMR/2016/004799] and Department of Higher Education, Science and Technology and Biotechnology, Government of West Bengal, through the grant [264(Sanc.)/ST/P/S&T/1G-80/2017] to Dr. Aryadeep Roychoudhury is gratefully acknowledged. The authors acknowledge University Grants Commission, Government of India, for providing Junior Research Fellowship to Mr. Aditya Banerjee.
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