Activation of Wheat Defense Response by Buchnera aphidicola-Derived Small Chaperone Protein GroES in Wheat Aphid Saliva

文献类型： 外文期刊

第一作者： Li, Qian

作者： Li, Qian;Fu, Yu;Liu, Xiaobei;Sun, Jingxuan;Hou, Maolin;Zhang, Yong;Chen, Julian;Chen, Julian

作者机构：

关键词： salivary protein; Sitobion miscanthi; Buchnera aphidicola; GroES; defense response

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.895； 五年影响因子：6.048 ）

ISSN： 0021-8561

年卷期： 2022 年 70 卷 4 期

页码：

收录情况： SCI

摘要： Salivary proteins secreted by aphids during feeding play an important role in regulating the plant defense response. We used mass spectrometry to identify 155 proteins from the wheat aphid, Sitobion miscanthi, among which 44 proteins were derived from the primary symbiont, Buchnera aphidicola. GroES, which is a highly abundant molecular chaperone that binds to GroEL, was detected in saliva. In vitro injection of purified GroES protein and overexpression of GroES in wheat leaves verified that GroES induced hydrogen peroxide accumulation and callose deposition in wheat and further activated the plant salic acid and jasmonic acid defense pathways. Our findings indicate that plants may have evolved new strategies to detect aphid attack and trigger defense responses by recognizing proteins derived from B. aphidicola, which is present in almost all aphid species.

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