数字农科院2.0

Identification And Characterization Of Plasmodiophora B.rassicae Primary Infection Effector C andidates That Suppress Or Induce Cell Death In Host And Nonhost Plants

文献类型： 外文期刊

作者： Chen, W; Li, Y; Yan, RB; Xu, L; Ren, L; Liu, F; Zeng, LY; Yang, H; Chi, P; Wang, XZ; Chen, KR; Ma, DF; Fang, XP

作者机构：

关键词： plant immunity; Plasmodiophora brassicae; primary infection; secretory proteins

期刊名称： PHYTOPATHOLOGY

ISSN： 0031-949X

年卷期： 2019 年 109 卷 10 期

页码：

收录情况： JCR（2021版）

摘要： Clubroot caused by Plasmodiophora brassicaeis one of the most important diseases in cruciferous crops. The recognition of P. brassicae by host plants is thought to occur at the primary infection stage, but the underlying mechanism remains unclear. Secretory proteins as effector candidates play critical roles in the recognition of pathogens and the interactions between pathogens and hosts. In this study, 33 P. brassicae secretory proteins expressed during primary infection were identified through transcriptome, secretory protein prediction, and yeast signal sequence trap analyses. Furthermore, the proteins that could suppress or induce cell death were screened through an Agrobacterium-mediated plant virus transient expression system and a protoplast transient expression system. Two secretory proteins, PBCN_002550 and PBCN_005499, were found to be capable of inducing cell death associated with H2O2 accumulation and electrolyte leakage in Nicotiana benthamiana. Moreover, PBCN_002550 could also induce cell death in Chinese cabbage. In addition, 24 of the remaining 31 tested secretory proteins could suppress mouse Bcl-2-associated X protein-induced cell death, and 28 proteins could suppress PBCN_002550-induced cell death.

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