The Verticillium dahliae Small Cysteine-Rich Protein VdSCP23 Manipulates Host Immunity
文献类型: 外文期刊
第一作者: Wang, Jie
作者: Wang, Jie;Hao, Xiaojuan;Wang, Dan;Ji, Xiaobin;Wang, Jun;Dai, Xiaofeng;Chen, Jieyin;Zhang, Dandan;Klosterman, Steven J.;Subbarao, Krishna V.;Dai, Xiaofeng;Chen, Jieyin;Zhang, Dandan;Subbarao, Krishna V.
作者机构:
关键词: Verticillium dahlia; small cysteine-rich proteins; inhibiting plant immunity; subcellular localization; virulence
期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.6; 五年影响因子:6.2 )
ISSN: 1661-6596
年卷期: 2023 年 24 卷 11 期
页码:
收录情况: SCI
摘要: Verticillium wilt caused by Verticillium dahliae is a notorious soil-borne fungal disease and seriously threatens the yield of economic crops worldwide. During host infection, V. dahliae secretes many effectors that manipulate host immunity, among which small cysteine-rich proteins (SCPs) play an important role. However, the exact roles of many SCPs from V. dahliae are unknown and varied. In this study, we show that the small cysteine-rich protein VdSCP23 inhibits cell necrosis in Nicotiana benthamiana leaves, as well as the reactive oxygen species (ROS) burst, electrolyte leakage and the expression of defense-related genes. VdSCP23 is mainly localized in the plant cell plasma membrane and nucleus, but its inhibition of immune responses was independent of its nuclear localization. Site-directed mutagenesis and peptide truncation showed that the inhibition function of VdSCP23 was independent of cysteine residues but was dependent on the N-glycosylation sites and the integrity of VdSCP23 protein structure. Deletion of VdSCP23 did not affect the growth and development of mycelia or conidial production in V. dahliae. Unexpectedly, VdSCP23 deletion strains still maintained their virulence for N. benthamiana, Gossypium hirsutum and Arabidopsis thaliana seedlings. This study demonstrates an important role for VdSCP23 in the inhibition of plant immune responses; however, it is not required for normal growth or virulence in V. dahliae.
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