ROS Regulation Mechanism for Mitigation of Abiotic Stress in Plants

Plants respond to various stresses during their lifecycle among which abiotic stress is the most severe one comprising heat, cold, drought, salinity, flooding, etc. take a heavy toll on crop yield worldwide in every corresponding year. ROS has dual role mechanisms where, at high levels, they are toxic cells while same time, molecule can function as signal transducer that activates local well systemic plant defense response against stress. The common species Hydrogen peroxide (H2O2), Superoxide anions (O2-), Hydroxyl radicals (OH-), and Singlet oxygen (1O2) results of physiological metabolism often controlled by enzymatic non-enzymatic antioxidant systems. generally accumulate plants biotic conditions resulting oxidative damage ultimately leads programmed cell death. Many scavenging pathways have been studied responses. Through careful manipulation levels plants, we enhance tolerance under unfavorable environmental conditions. This chapter presents an overview regulation essential enzymes involved thoroughly discussed below.