4.7 Article

Functions of Melatonin during Postharvest of Horticultural Crops

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PLANT AND CELL PHYSIOLOGY
卷 63, 期 12, 页码 1764-1786

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OXFORD UNIV PRESS
DOI: 10.1093/pcp/pcab175

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Horticultural crops; Low-temperature storage; Melatonin; Postharvest; RNS; ROS scavenging systems; Sensory and nutritional quality

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Melatonin has important effects on plant growth and development, with antioxidant properties and interactions with plant regulators and reactive oxygen and nitrogen species. Its application in horticultural crops can alleviate stress, delay senescence, and preserve product quality, which is of significant economic importance.
Melatonin, a tryptophan-derived molecule, is endogenously generated in animal, plant, fungal and prokaryotic cells. Given its antioxidant properties, it is involved in a myriad of signaling functions associated with various aspects of plant growth and development. In higher plants, melatonin (Mel) interacts with plant regulators such as phytohormones, as well as reactive oxygen and nitrogen species including hydrogen peroxide (H2O2), nitric oxide (NO) and hydrogen sulfide (H2S). It shows great potential as a biotechnological tool to alleviate biotic and abiotic stress, to delay senescence and to conserve the sensory and nutritional quality of postharvest horticultural products which are of considerable economic importance worldwide. This review provides a comprehensive overview of the biochemistry of Mel, whose endogenous induction and exogenous application can play an important biotechnological role in enhancing the marketability and hence earnings from postharvest horticultural crops.

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