数字农科院2.0

Quantitative Acetylome Analysis of Differentially Modified Proteins in Virulence-Differentiated Fusarium oxysporum f. sp. cucumerinum Isolates during Cucumber Colonization

文献类型： 外文期刊

作者： Ying Zhou;Xiaohong Lu;Jianjun Hao;Shidong Li

作者机构：

关键词： Cucumis sativus;lysine acetylation;pathogenesis;proteome;virulence evolution

期刊名称： Journal of Fungi

ISSN： 2309-608X

年卷期： 2023 年 9 卷 9 期

页码：

收录情况： SCIE（2023版）

摘要： Fusarium oxysporum f. sp. cucumerinum (Foc) is a prominent pathogen that adversely affects cucumber (Cucumis sativus) production. In the pathogen’s parasitic lifestyle, the pathogenesis and virulence evolution may be regulated by lysine acetylation, as demonstrated in many living organisms. However, its specific function in Foc remains poorly understood. In this study, the acetylome profiles of a mild virulence strain (foc-3b) and its derived virulence-enhanced strain (Ra-4) were analyzed before and post-inoculation on cucumber plants. In total, 10,664 acetylation sites were identified corresponding to 3874 proteins, and 45 conserved acetylation motifs were detected. Through comparison of the acetylomes, numerous differentially lysine-acetylated proteins were enriched in energy metabolism and protein processing processes, indicating the critical role of lysine acetylation during the transition from the saprotrophic lifestyle to the parasitic lifestyle. Comparative acetylome analyses on the two virulence-differentiated strains revealed that several differentially lysine-acetylated proteins were involved in pathways of defense response and energy metabolism. Ra-4 showed enhanced energy metabolism compared to foc-3b. This indicates that robust metabolic activity is required to achieve high virulence and facilitating adaptive evolution. Additionally, faster host responses are supported by an ample energy supply enhancing virulence. Thus, lysine acetylation plays a crucial role in the pathogenesis and virulence evolution of Foc.

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