A Cerato-Platanin Family Protein FocCP1 Is Essential for the Penetration and Virulence of Fusarium oxysporum f. sp. cubense Tropical Race 4

文献类型： 外文期刊

第一作者： Liu, Siwen

作者： Liu, Siwen;Chen, Hongrui;Guo, Xiuwu;Liu, Siwen;Wu, Bo;Yang, Jing;Bi, Fangcheng;Dong, Tao;Yang, Qiaosong;Hu, Chunhua;Xiang, Dandan;Huang, Huoqing;Shao, Chuange;Chen, Yixiang;Yi, Ganjun;Li, Chunyu

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关键词： Fusarium oxysporum f; sp; cubense; cerato-platanin; virulence; necrosis

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1661-6596

年卷期： 2019 年 20 卷 15 期

页码：

收录情况： SCI

摘要： Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4) is well-known as the causal agent of Fusarium wilt of banana and is one of the most destructive phytopathogens for banana plants. The molecular mechanisms underlying Foc TR4 virulence remain elusive. Here, we demonstrate that a cerato-platanin (CP) protein, FocCP1, functions as a virulence factor that is required by Foc TR4 for penetration and full virulence. The FocCP1 gene was expressed in every condition studied, showing a high transcript level in planta at the early stage of infection. Infiltration of the recombinant FocCP1 protein induced significant cell death and upregulated defence-related gene expression. FocCP1 knock-out strains showed a significant decrease in aerial growth rather than aqueous growth, which is reminiscent of hydrophobins. Furthermore, deletion of FocCP1 significantly reduced virulence and dramatically reduced infective growth in banana roots, likely resulting from a defective penetration ability. Taken together, the results of this study provide novel insight into the function of the recently identified FocCP1 as a virulence factor in Foc TR4.

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