Glutathione (γ-glutamyl-cysteinyl-glycine; GSH), a ubiquitously distributed sulfur containing antioxidant molecule, serves as a crucial player in regulating plant growth, development and abiotic stress tolerance. It is one of the most powerful low-molecular weight thiols and rapidly accumulates in plant and animal cells under stress. Recent in-depth studies on GSH homeostasis (synthesis, degradation, compartmentation, transport, and redox turnover) and the role of GSH in cell proliferation and abiotic stress tolerance have created opportunities for plant biologists to conduct research...