Hu Wei, Yang Hai, Tie Weiwei, Yan Yan, Ding Zehong, Liu Yang, Wu Chunlai, Wang Jiashui, Reiter Russel J, Tan Dun-Xian, Shi Haitao, Xu Biyu, Jin Zhiqiang
Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences , Xueyuan Road 4, Haikou, Hainan 571101, People's Republic of China.
National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan, Hubei 430074, People's Republic of China.
J Agric Food Chem. 2017 Nov 22;65(46):9987-9994. doi: 10.1021/acs.jafc.7b03354. Epub 2017 Nov 8.
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 μM treatments more effective than the 50 μM 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.
本研究旨在探讨褪黑素在不同成熟周期的各类香蕉品种采后成熟和品质方面的作用。在采后贮藏期，内源性褪黑素在与成熟相关方面表现出与乙烯相似的特性。与乙烯相比，褪黑素与采后香蕉成熟的相关性更强。外源施加褪黑素导致采后香蕉成熟延迟。此外，这种效应具有浓度依赖性，200和500μM处理比50μM处理更有效。外源褪黑素还导致内源性褪黑素含量升高，通过调节MaACO1和MaACS1的表达降低乙烯生成，并延缓品质指标的急剧变化。综上所述，本研究表明褪黑素是各类香蕉果实成熟的一个指标，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。
