数字农科院2.0

Comparative transcriptomic analysis of Chinese cabbage's defense responses to Alternaria brassicae

文献类型： 外文期刊

作者： Qi Zeng;Qingguo Sun;Xinru Hou;Lin Chen;Ruixing Zhang;Xue Bai;Xifan Liu;Xiaowu Wang;Lugang Zhang;Baohua Li

作者机构：

关键词： black spot;BrERF109;Chinese cabbage;indolic glucosinolates;RNA-seq

期刊名称： Journal of Integrative Agriculture

ISSN： 2095-3119

年卷期： 2025 年 24 卷 10 期

页码：

收录情况： SCIE（2025版） ; ; CSCD（2025-2026年度） ; ; 科技核心（2024版） ; ; 农林核心（2024版）

摘要： Black spot, a fungal disease caused by Alternaria brassicae infection, inflicts severe damage on Chinese cabbage. Through comparative transcriptomic analysis, this study investigated the molecular mechanisms underlying Chinese cabbage's defense responses to A. brassicae infection. Notably, we found that the expression of BrERF109 was induced by A. brassicae infection. Silencing of BrERF109 by an optimized virus-induced gene silencing (VIGS) assay in Chinese cabbage diminished disease resistance, while BrERF109-overexpression in Arabidopsis enhanced it. Additionally, BrERF109 silencing in Chinese cabbage suppressed indolic glucosinolates gene expression, substantially reducing indolic glucosinolates levels, whereas BrERF109-overexpression in Arabidopsis promoted their accumulation. BrERF109 directly interacts with the BrIGMT4 promoter, thereby facilitating indolic glucosinolates accumulation and enhancing defense against A. brassicae. This study elucidates the BrERF109-BrIGMT4 regulatory module in Chinese cabbage's defense against A. brassicae infection, while providing valuable data for further investigation of plant–A. brassicae interactions.

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