The Emerging Role of GSNOR in Oxidative Stress Regulation

Oxidative stress is a common event in aerobic organisms and a fundamental and unavoidable cost of the aerobic lifestyle. Reactive oxygen and nitrogen species (ROS/RNS) and iron (Fe) are the most common agents that trigger oxidative stress. A conserved enzyme in the S-nitrosoglutathione (GSNO) metabolism, GSNO reductase (GSNOR), modulates a multitude of abiotic and biotic stress responses. In this review, we focus on the emerging role of GSNOR as a master regulator in oxidative stress through its regulation of the interaction of ROS, RNS, and Fe, and highlight recent discoveries in post-translational modifications of GSNOR and functional variations of natural GSNOR variants during oxidative stress. Recent advances in understanding GSNOR regulation show promise for the modulation of oxidative stress in plants.

Automated summary

Oxidative stress, a common occurrence in aerobic organisms, is a fundamental and unavoidable cost of aerobic lifestyle. GSNOR, a conserved enzyme in the GSNO metabolism, plays a crucial regulatory role in oxidative stress by modulating the interaction of antioxidants and iron to regulate stress responses in plants. Recent advancements in understanding GSNOR regulation show promise for the modulation of oxidative stress in plants.