Postharvest nitric oxide treatment induced the alternative oxidase pathway to enhance antioxidant capacity and chilling tolerance in peach fruit

文献类型： 外文期刊

第一作者： Song, Congcong

作者： Song, Congcong;Zhao, Yaoyao;Li, Ang;Qi, Shuning;Lin, Qiong;Duan, Yuquan

作者机构：

关键词： Prunus persica; Chilling injury; Antioxidant defense; Respiration pathway; Alternative oxidase

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

ISSN： 0981-9428

年卷期： 2021 年 167 卷

页码：

收录情况： SCI

摘要： Nitric oxide (NO) is an important regulator of plant response to cold stress. In this study, NO treatment delayed the development of chilling injury (CI), inhibited the increase in H2O2 content, O-2(-) production rate and decrease in firmness of postharvest peach fruit. Meanwhile, through RNA-seq analysis, NO treatment up-regulated gene expression of PpG-6-PDH, Pp6-PGDH and PpAOX while it down-regulated the expression of PpGPI and PpHK, suggesting that the pentose phosphate respiratory pathway and cyanide-resistant respiratory pathway were promoted and the glycolysis pathway was inhibited. Furthermore, the PpAOX expression was consistent with the trend of PpPOD1/2 expression and H2O2 content, indicating that AOX may play a role in reducing oxidative damage of peach fruit by scavenging H2O2. Thus, it was concluded that NO treatment could induce the cyanideresistant respiration pathway to enhance antioxidant ability and chilling tolerance in post-harvest peach fruit.

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