Function of two splicing variants of RcCPR5 in the resistance of Rosa chinensis to powdery mildew
文献类型： 外文期刊
第一作者： Li, Xiaorui
作者： Li, Xiaorui;He, Guoren;Jiang, Shenghang;Yang, Chun;Yang, Binan;Ming, Feng;Li, Xiaorui;Yang, Chun;Yang, Binan;Ming, Feng
作者机构：
关键词： Rosa chinensis; RcCPR5; ETI; Powdery mildew
期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）
ISSN： 0168-9452
年卷期： 2023 年 335 卷
页码：
收录情况： SCI
摘要： Rosa chinensis is an important economic and ornamental crop, but powdery mildew greatly reduces its ornamental and economic value. The RcCPR5 gene, encoding a constitutive expressor of pathogenesis-related genes, has two splicing variants in R. chinensis. Compared with RcCPR5-1, RcCPR5-2 has a large C-terminal deletion. During disease development, RcCPR5-2 responded quickly and coordinated with RcCPR5-1 to resist the invasion of the powdery mildew pathogen. In virus-induced gene silencing experiments, down-regulation of RcCPR5 improved the resistance of R. chinensis to powdery mildew. This was confirmed to be broad-spectrum resistance. In the absence of pathogen infection, RcCPR5-1 and RcCPR5-2 formed homodimers and heterodimers to regulate plant growth; but when infected by the powdery mildew pathogen, the RcCPR5-1 and RcCPR5-2 complexes disassociated and released RcSIM/RcSMR to induce effector-triggered immunity, thereby inducing resistance to pathogen infection.
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