Natural Variation in Banana Varieties Highlights the Role of Melatonin in Postharvest Ripening and Quality
Natural Variation in Banana Varieties Highlights the Role of Melatonin in Postharvest Ripening and Quality
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DOI：
10.1021/acs.jafc.7b03354
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发表时间：
2017-11-22
影响因子：
6.1
通讯作者：
Jin, Zhiqiang
中科院分区：
文献类型：
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作者：
Hu, Wei;Yang, Hai;Jin, Zhiqiang
本研究旨在探讨褪黑激素对不同成熟期香蕉品种采后成熟和品质的影响。在采后过程中，内源褪黑素在果实成熟过程中表现出与乙烯相似的表现。与乙烯相比，褪黑激素与香蕉采后成熟的相关性更强。外源褪黑激素处理可延缓香蕉采后成熟。此外，这种效应是浓度依赖的，200和500亩M处理比50亩M处理更有效。外源褪黑激素还通过调节MaACO1和MaACS1的表达，提高内源褪黑激素的含量，减少乙烯产生，延缓品质指标的急剧变化。综上所述，本研究强调褪黑素是不同品种香蕉果实成熟的指示剂，褪黑素对乙烯生物合成和采后成熟的抑制作用可用于采后果实成熟和品质的生物控制。
This study aimed to investigate the role of melatonin in postharvest ripening and quality in various banana varieties with contrasting ripening periods. During the postharvest life, endogenous melatonin showed similar performance with ethylene in connection to ripening. In comparison to ethylene, melatonin was more correlated with postharvest banana ripening. Exogenous application of melatonin resulted in a delay of postharvest banana ripening. Moreover, this effect is concentration dependent, with 200 and 500 mu M treatments more effective than the 50 mu M treatment. Exogenous melatonin also led to elevated endogenous melatonin content, reduced ethylene production through regulation of the expression of MaACO1 and MaACS1, and delayed sharp changes of quality indices. Taken together, this study highlights that melatonin is an indicator for banana fruit ripening in various varieties, and the repression of ethylene biosynthesis and postharvest ripening by melatonin can be used for biological control of postharvest fruit ripening and quality.