Guanosine 3 ',5 '-cyclic monophosphate mediates gibberellic acid-induced chilling tolerance and defense response in postharvest peach fruit

文献类型： 外文期刊

第一作者： Jiao, Caifeng

作者： Jiao, Caifeng;Duan, Yuquan

作者机构：

关键词： GA(3); cGMP; Antioxidant system; MSR; LOX and PLD

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）

ISSN： 0925-5214

年卷期： 2019 年 155 卷

页码：

收录情况： SCI

摘要： The mediation of stimulation of chilling tolerance and defense response by guanosine 3',5'-cyclic monophosphate (cGMP) in response to gibberellic acid (GA(3)) treatment in peach fruit was explored. The fruit were treated with exogenous GA(3) and LY83583 (cGMP inhibitor). It turned out that exogenous GA(3) treatment mitigated chilling injury (CI) in postharvest peach fruit. Further, GA(3) treatment enhanced guanylyl cyclase (GC) activity, and thereby induced cGMP accumulation. GA(3) also up regulated the gene expression of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR) and glutathione S-transferase (GST). In addition, GA(3) treatment enhanced the gene expression of methionine sulfoxide reductase (MSR), and inhibited the gene expression of lipoxygenase (LOX) and phospholipase D (PLD). These above exogenous GA(3)-stimulated effects were weakened by the addition of LY83583. Overall, cGMP mediated GA(3)-induced chilling tolerance and defense response in postharvest peach fruit.

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