Contribution of polyamines metabolism and GABA shunt to chilling tolerance induced by nitric oxide in cold-stored banana fruit

文献类型： 外文期刊

第一作者： Wang, Yansheng

作者： Wang, Yansheng;Luo, Zisheng;Mao, Linchun;Ying, Tiejin;Wang, Yansheng

作者机构：

关键词： Nitric oxide; Banana fruit; Chilling injury; Polyamine; GABA; Proline

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2016 年 197 卷

页码：

收录情况： SCI

摘要： Effect of exogenous nitric oxide (NO) on polyamines (PAs) catabolism, gamma-aminobutyric acid (GABA) shunt, proline accumulation and chilling injury of banana fruit under cold storage was investigated. Banana fruit treated with NO sustained lower chilling injury index than the control. Notably elevated nitric oxide synthetase activity and endogenous NO level were observed in NO-treated banana fruit. PAs contents in treated fruit were significantly higher than control fruit, due to the elevated activities of arginine decarboxylase and ornithine decarboxylase. NO treatment increased the activities of diamine oxidase, polyamine oxidase and glutamate decarboxylase, while reduced GABA transaminase activity to lower levels compared with control fruit, which resulted the accumulation of GABA. Besides, NO treatment upregulated proline content and significantly enhanced the ornithine aminotransferase activity. These results indicated that the chilling tolerance induced by NO treatment might be ascribed to the enhanced catabolism of PAs, GABA and proline. (C) 2015 Elsevier Ltd. All rights reserved.

分类号： TS2`TS201.2

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