The Mediation of NO-Enhanced Chilling Tolerance by GSK-3 in Postharvest Peach Fruit

文献类型： 外文期刊

第一作者： Jiao, Caifeng

作者： Jiao, Caifeng;Duan, Yuquan

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关键词： SNP; GSK-3; MDA and electrolyte leakage; AOX; HSP, WRKY and CBF; Peach fruit

期刊名称：FOOD AND BIOPROCESS TECHNOLOGY （ 影响因子：4.465； 五年影响因子：4.793 ）

ISSN： 1935-5130

年卷期： 2019 年 12 卷 12 期

页码：

收录情况： SCI

摘要： The role of glycogen synthase kinase-3 (GSK-3) in nitric oxide (NO)-enhanced chilling tolerance in postharvest peach fruit was investigated. The fruits were immersed in sodium nitroprusside (SNP; exogenous NO donor) and bikinin (GSK-3 inhibitor). Results showed that the chilling injury (CI) index declined following the exposure of the peach fruit to exogenous SNP. SNP treatment also induced GSK-3 expression. Furthermore, SNP treatment reduced malondialdehyde (MDA) content and electrolyte leakage in the peach fruit. In addition, SNP treatment induced the increase in alternative oxidase (AOX) activity and the upregulation of the gene expression of 18.1-kDa class I heat shock protein (HSP), WRKY2, and C-repeat binding factor (CBF). The effects of SNP treatment were partly weakened by the addition of bikinin. These findings indicate that GSK-3 mediated the reduction of MDA content and electrolyte leakage and the activation of AOX, 18.1-kDa class I HSP, WRKY2, and CBF by NO, thereby inducing chilling tolerance in peach fruit.

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