Melatonin Inhibits Ethylene Synthesis via Nitric Oxide Regulation To Delay Postharvest Senescence in Pears

• DOI: 10.1021/acs.jafc.8b06580
• Publication Date: 2019-02-08T23:33:30Z
• Authors: Jianlong Liu; Jie Yang; Haiqi Zhang; Liu Cong; Rui Zhai; Chengquan Yang; Zhigang Wang; Fengwang Ma; Lingfei Xu
• Keywords: Senescence

Understanding ripening and senescence processes in postharvest stored fruit is key to the identification implementation of effective treatment methods. Here, we explored effects exogenous applications melatonin (MT) nitric oxide (NO) on softening three cultivars European pear ( Pyrus communis L.). The results showed that MT NO played important roles two processes: they decreased rate upregulation PcCel PcPG, inhibited expression ethylene synthetase genes PcACS PcACO), reduced rates respiration production. increased activity synthase through PcNOS subsequently led an increase content. However, when synthesis was inhibited, delaying effect almost eliminated. These findings indicate acted upstream process then delayed fruit.