期刊
FOOD CHEMISTRY
卷 197, 期 -, 页码 333-339出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2015.10.118
关键词
Nitric oxide; Banana fruit; Chilling injury; Polyamine; GABA; Proline
资金
- National Natural Science Foundation of China [31371856]
- Zhejiang Provincial Natural Science Foundation of China [LR13C200001]
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.
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