Potential role of reactive oxygen species and antioxidant genes in the regulation of peach fruit development and ripening

文献类型： 外文期刊

第一作者： Huan, Chen

作者： Huan, Chen;Jiang, Li;An, Xiujuan;Xu, Yin;Yu, Zhifang;Yu, Mingliang;Ma, Ruijuan

作者机构：

关键词： Superoxide dismutase;Catalase;Glutathione peroxidase;Gene expression;Low temperature;Oxidative stress

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The roles of reactive oxygen species (ROS) as both toxic by-products and as signaling molecules have been reported in fruit development and ripening. Superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX) play important roles in balancing the induction and removal of ROS in plants, and are respectively encoded by families of closely homologous genes. In the present study, we investigated the roles of ROS and the above-mentioned antioxidant genes during the development and ripening of peach fruit. The experimental results indicated that O-2(-) and H2O2 acted as potential signaling molecules in the middle stage of fruit development, and only H2O2 might function as a main toxic molecule to stimulate lipid peroxidation and oxidative stress in the late stage of fruit ripening. PpaCu/Zn-SODs were the most abundant members in the PpaSOD gene family and they expressed steadily in peach fruit development and ripening. Low temperature (4 degrees C) postponed and suppressed the climacteric peaks of respiration and ethylene, significantly enhanced the activities of CAT and GPX, and up-regulated the expression of PpaCAT1 and PpaGPX6 in the late stage of fruit ripening. PpaCAT1 and PpaGPX6 were two key genes in alleviating oxidative stress in the late stage of fruit ripening. (C) 2016 Elsevier Masson SAS. All rights reserved.

分类号： Q945`Q946

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