Akademik Məlumat İdarəetmə Sistemi
in: Antioxidant defence in plants, Aftab,T.,Hakeem,K.R., Editor, Springer Nature, Singapore, pp.181-214, 2022
The growth and development of plants are affected by the adverse effect of environmental stresses including drought, salinity, high temperature, and toxic metal accumulation. Under environmental stresses, cell oxidative damage of plants generally occurs as a consequence of the overproduction of reactive oxygen species (ROS). While tolerant plants could survive against abiotic stress-induced oxidative stress by following various physiological mechanisms. Among various physiological processes, glutathione (GSH), a non-enzymatic antioxidant, is one of the key metabolites which plays a significant role in protecting the plant cells from oxidative stress. GSH directly or indirectly involves in detoxifying the ROS in plants’ cells. Besides these roles, GSH also plays role in detoxification of methylglyoxal, formation of phytochelatins, interacts with plant hormones, other signaling molecules and its redox state triggers signal transduction, and also acts as a cofactor in several biochemical reactions. Therefore, GSH is measured as a versatile redox molecule and a perfect metabolite to have an involvement in plant growth and development, under both stress and normal conditions. The current chapter overviewed the earlier studies on the biosynthesis and physiological mechanisms of GSH during heat and drought-induced oxidative stress in plants.