The role of hydrogen sulfide (H₂S) in postharvest fruits: A comprehensive analysis

Hydrogen sulfide (H₂S) has emerged as a crucial signaling molecule in plant biology, exhibiting diverse roles in growth, development, and stress responses. In recent years, its involvement in postharvest physiology has drawn significant attention, particularly in the context of fruit ripening, senescence, and quality maintenance. However, despite the increasing recognition of H₂S's importance in postharvest processes, there remains a limited understanding of the specific molecular mechanisms by which H₂S modulates these physiological responses and its interaction with other signaling pathways in fruit tissues. This review provides a comprehensive analysis of the role of H₂S in postharvest fruits, encompassing its biosynthesis pathways, regulatory mechanisms, and physiological effects. By identifying existing gaps in the current literature, such as the need for more targeted studies on H₂S's synergistic effects with other phytohormones and its potential impact on different fruit varieties, this review elucidates the multifaceted functions of H₂S and its potential applications in postharvest technologies aimed at prolonging fruit shelf-life and preserving quality.