Abstract: Sulfhydryl group-based posttranslational modification protein S-sulfhydration and its effect on the conformation, activity, stability, and cellular localization of target proteins and the regulation of cellular metabolism as well as the interaction of S-sulhydration with nitrosylation, sulfenylation, sulfinylation, sulfonylation, and glutathionylation in plants were described. In addition, the S-sulfhydration of hydrogen sulfide (H2S) on the key enzymes and signaling proteins involved in H2S, reactive oxygen species (ROS), nitric oxide (NO), sugar, abscisic acid, ethylene, and melatonin in plants was analyzed. Also, H2S signaling-self amplification by S-sulfhydration of its metabolic enzymes and the interaction between H2S and ROS, NO, sugar, abscisic acid, ethylene, melatonin signaling by protein S-sulfhydration in plants was concluded. The effect of H2S on the key metabolic enzymes and signaling proteins of the other plant hormones auxin, gibberelin, cytokinin, brassinosteroids, jasmonic aicd, salicylic aicd, and strigolactone by protein S-sulfhydration was prospected.

Key words: hydrogen sulfide, nitric oxide, plant hormone, protein S-sulfhydration, reactive oxygen species