Fusarium graminearum rapid alkalinization factor peptide negatively regulates plant immunity and cell growth via the FERONIA receptor kinase
文献类型： 外文期刊
第一作者： Wang, Yujie
作者： Wang, Yujie;Liu, Xin;Yuan, Bingqin;Chen, Xue;Zhao, Hanxi;Ali, Qurban;Zheng, Minghong;Tan, Zheng;Yao, Hemin;Zheng, Shuqing;Wu, Jingni;Xu, Jianhong;Shi, Jianrong;Wu, Huijun;Gao, Xuewen;Gu, Qin;Liu, Xin;Xu, Jianhong;Shi, Jianrong
作者机构：
关键词： Fusarium graminearum; rapid alkalinization factor; receptor kinase FERONIA; host immunity; plant growth
期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：13.8； 五年影响因子：13.2 ）
ISSN： 1467-7644
年卷期： 2024 年
页码：
收录情况： SCI
摘要： The plant rapid alkalinization factor (RALF) peptides function as key regulators in cell growth and immune responses through the receptor kinase FERONIA (FER). In this study, we report that the transcription factor FgPacC binds directly to the promoter of FgRALF gene, which encodes a functional homologue of the plant RALF peptides from the wheat head blight fungus Fusarium graminearum (FgRALF). More importantly, FgPacC promotes fungal infection via host immune suppression by activating the expression of FgRALF. The FgRALF peptide also exhibited typical activities of plant RALF functions, such as inducing plant alkalinization and inhibiting cell growth, including wheat (Triticum aestivum), tomato (Solanum lycopersicum) and Arabidopsis thaliana. We further identified the wheat receptor kinase FERONIA (TaFER), which is capable of restoring the defects of the A. thaliana FER mutant. In addition, we found that FgRALF peptide binds to the extracellular malectin-like domain (ECD) of TaFER (TaFERECD) to suppress the PAMP-triggered immunity (PTI) and cell growth. Overexpression of TaFERECD in A. thaliana confers plant resistance to F. graminearum and protects from FgRALF-induced cell growth inhibition. Collectively, our results demonstrate that the fungal pathogen-secreted RALF mimic suppresses host immunity and inhibits cell growth via plant FER receptor. This establishes a novel pathway for the development of disease-resistant crops in the future without compromising their yield potential.
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