一种Colletotrichum tabacum效应器Cte1准并稳定NbCPR1以抑制植物免疫力

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Assay for Pathogen-Associated Molecular Pattern PAMP-Triggered Immunity PTI in Plants

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Yuan Xue^1,2, Shouhui Pan², Quan Zhang²

¹Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, China.

Molecular plant-microbe interactions : MPMI

|February 20, 2024

概括

一种新型的效应剂,Cte1,来自烟草炭菌病原体*Colletotrichum tabacum*,可以抑制植物免疫力. Cte1稳定了植物免疫调节器NbCPR1,以增强病原体的毒性和疾病的发展.

科学领域:

植物病理学植物病理学
分子植物-微生物相互作用
生物化学生物化学

背景情况:

烟草 (Colletotrichum tabacum) 导致全球烟草,威胁到生产.
植物防御干扰中的*C. tabacum*效应因子的机制尚不清楚.

研究的目的:

识别和描述C. tabacum的新型作用因子.
阐明Cte1在*C. tabacum*病原性和植物免疫抑制中的作用.

主要方法:

效应器识别和表达式分析.
在 *Nicotiana benthamiana* (例如,细胞死亡,ROS爆发,淘汰突变,转基因植物) 中的功能测试.
蛋白质与蛋白质相互作用研究 (Cte1和NbCPR1) 和基因沉默.

主要成果:

一个新型的效应因子Cte1被确定并在生物营养阶段进行升级调节.
Cte1抑制BAX诱导的细胞死亡和flg22 / 素触发的ROS爆发.
*CTE1*淘汰突变体的毒性降低,而Cte1过度表达的*N. benthamiana*则表现出增加的易感性.
Cte1与NbCPR1相互作用并使其稳定,NbCPR1是植物免疫的负调节者.

结论:

Cte1是 *C. tabacum* 的一个关键的致病因子.
Cte1通过稳定NbCPR1,促进病原体感染来抑制植物免疫力.
这项研究揭示了在植物疾病中以效应体为媒介的免疫抑制的新机制.

关键词:

尼科蒂亚娜·本塔米亚娜 (Nicotiana benthamiana) 是一种植物.这就是ROSOS ROS.人类鼻 (英语:anthracnose) 是一种人类鼻.的真菌是一种真菌.植物的耐药性植物的耐药性

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