Verticillium dahliae Elicitor VdSP8 Enhances Disease Resistance Through Increasing Lignin Biosynthesis in Cotton

文献类型： 外文期刊

第一作者： Wang, Yajuan

作者： Wang, Yajuan;Qin, Jun;Wei, Mengmeng;Liao, Xiwen;Shang, Wenjing;Hu, Xiaoping;Chen, Jieyin;Subbarao, Krishna V.

作者机构：

关键词： beta-glucosidases; Gossypium hirsutum; resistance; subtilisin-like proteases; verticillium dahliae

期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：6.3； 五年影响因子：7.7 ）

ISSN： 0140-7791

年卷期： 2025 年 48 卷 1 期

页码：

收录情况： SCI

摘要： Verticillium wilt caused by the soil-borne fungus Verticillium dahliae Kleb., is a destructive plant disease that instigates severe losses in many crops. Improving plant resistance to Verticillium wilt has been a challenge in most crops. In this study, a V. dahliae secreted protein VdSP8 was identified and shown to activate hyper-sensitive response (HR) and systemic acquired resistance (SAR) to Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) and Botrytis cinerea in tobacco plants. We identified a beta-glucosidase named GhBGLU46 as a cotton plant target of VdSP8. VdSP8 interacts with GhBGLU46 both in vivo and in vitro and promotes the beta-glucosidase activity of GhBGLU46. Silencing of GhBGLU46 reduced the expression of genes involved in lignin biosynthesis, such as GhCCR4, GhCCoAOMT2, GhCAD3 and GhCAD6, thus decreasing lignin deposition and increasing Verticillium wilt susceptibility. We have shown that GhBGLU46 is indispensable for the function of VdSP8 in plant resistance. These results suggest that plants have also evolved a strategy to exploit the invading effector protein VdSP8 to enhance plant resistance.

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