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Fusarium sacchari CFEM 蛋白抑制宿主免疫力,并以不同的方式促进病毒性

Tianshu Hong^1,2,3, Shichao Wang^1,2,3, Zhiyuan Luo^1,2,3

¹State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning 530004, China.

International journal of molecular sciences

|December 17, 2024

概括

肥菌使用常见的真菌细胞外膜 (CFEM) 蛋白质通过结合铁来抑制甘免疫力. 这种机制有助于病原体通过改变宿主铁含量来殖民植物.

科学领域:

植物病理学植物病理学
分子菌学分子菌学.
生物化学生物化学

背景情况:

由*Fusarium sacchari*引起的Pokkah boeng病导致了大量的甘产量损失.
影响植物免疫力的*F. sacchari*背后的分子机制尚不清楚.
众所周知,在真菌细胞外膜 (CFEM) 中常见的蛋白质在真菌毒性和感染中起作用.

研究的目的:

研究 *F. sacchari* CFEM 蛋白在抑制植物免疫反应中的作用.
阐明这些CFEM蛋白调节宿主免疫力的机制.

主要方法:

三种 *F. sacchari* CFEM 蛋白质 (Fs08184,Fs10706,Fs13617) 的鉴定和表征.
在已识别的CFEM蛋白中分析保存的铁结合点 (Asp和Phe残留物).
研究这些残留物在铁获取和宿主-病原体相互作用中的作用.

主要成果:

鉴定出了三种FsCFEM蛋白质,可以大大抑制植物免疫反应.
在CFEM蛋白中保存的Asp和Phe残留物对于铁结合至关重要.
这些蛋白质有助于 *F. sacchari* 获得铁,从而创造低铁条件,抑制宿主免疫力.

结论:

*Fusarium sacchari*利用Asp-Phe类型的CFEM蛋白来获得铁,并操纵宿主铁的稳定性.
这种铁化机制有助于抑制植物免疫力,帮助病原体殖民.
CFEM蛋白质代表了在甘中管理波卡博恩病的潜在目标.

关键词:

在CFEMEM中,我们可以看到.这种植物是 Fusarium sacchari.主体免疫力主体免疫力甘糖的使用方法毒性差异化分化毒性差异化

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