SnRK1 signaling regulates cucumber growth and resistance to Corynespora cassiicola

文献类型： 外文期刊

第一作者： Huang, Jingnan

作者： Huang, Jingnan;Wang, Xue;Ma, Lifeng;Ma, Zhangtong;Meng, Xiangnan;Fan, Haiyan;Meng, Xiangnan;Fan, Haiyan;Zhao, Juyong

作者机构：

关键词： Cucumis sativus; CsSnRK1; Growth; Immune response

期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）

ISSN： 0168-9452

年卷期： 2023 年 332 卷

页码：

收录情况： SCI

摘要： Energy metabolism is one of the key factors determining the growth and development of plants and the response to biotic and abiotic stresses. Sucrose non-fermentation 1 related protein kinase 1 (SnRK1) is an important energy-sensitive regulator that plays a key role in the overall control of carbohydrate metabolism. However, little is known about the function of SnRK1 in cucumber. In this study, metformin (an SnRK1 activator) and trehalose (an SnRK1 inhibitor) were used to investigate the role of SnRK1 signaling in cucumber. The results showed that SnRK1 activation could inhibit the growth of cucumber, slow down the net photosynthetic rate (Pn), reduce the contents of photosynthetic pigments and soluble sugars, and suppress the expression of genes related to sucrose metabolism. By contrast, SnRK1 inhibition yielded opposite results. Furthermore, SnRK1 activation and CsSnRK1 over-expression improved cucumber resistance to Corynespora cassiicola. While, SnRK1 inhibition and CsSnRK1 silencing reduced the resistance of cucumber to C. cassiicola. The results indicated that CsSnRK1 gene can positively regulate the resistance of cucumber to C. cassiicola. We conclude that CsSnRK1 signaling plays an important role in balancing the growth and immune response of cucumber. These results can be applied to the improvement of disease-resistant cucumber varieties.

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