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Impact of postharvest nitric oxide treatment on antioxidant enzymes and related genes in banana fruit in response to chilling tolerance

文献类型： 外文期刊

作者： Wu, Bin;Li, Xueping;Chen, Weixin;Guo, Qin;Li, Qingpeng;Ha, Yiming;Wu, Bin

作者机构：

关键词： Nitric oxide;Banana;Chilling injury;Antioxidant enzymes;Gene expression

期刊名称： POSTHARVEST BIOLOGY AND TECHNOLOGY

ISSN： 0925-5214

年卷期： 2014 年 92 卷

页码：

收录情况： SCI

摘要： Banana fruits harvested at the mature green stage were treated with 60 mu LL-1 nitric oxide (NO) for 3 h at 22 degrees C, and then stored at 7 perpendicular to 1 degrees C with 90% RH for 15 days. The results showed that the application of NO at 60 mu LL-1 was most effective in reducing chilling injury in banana fruit. The treatment reduced increases in electrolyte leakage and malondialdehyde content, and delayed increases in both superoxide anion (O-2(circle-))production rate and H2O2 content. Fruit treated with NO exhibited higher activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX), and significantly higher expression of MaSOD, MaCAT, MaPOD and MaAPX genes than control fruit during storage. These results indicate that NO treatment might enhance chilling tolerance of banana fruit via improving the activities of antioxidant enzymes and inducing the expression of antioxidant-related genes. (C) 2014 Elsevier B.V. All rights reserved.

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