Biological Functions of Hydrogen Sulfide in Plants

Hydrogen sulfide (H(2)S), which is a gasotransmitter, can be biosynthesized and participates in various physiological and biochemical processes in plants. H(2)S also positively affects plants’ adaptation to abiotic stresses. Here, we summarize the specific ways in which H(2)S is endogenously synthesized and metabolized in plants, along with the agents and methods used for H(2)S research, and outline the progress of research on the regulation of H(2)S on plant metabolism and morphogenesis, abiotic stress tolerance, and the series of different post-translational modifications (PTMs) in which H(2)S is involved, to provide a reference for future research on the mechanism of H(2)S action.