数字农科院2.0

Multi-Time Point Transcriptome Analysis and Functional Validation Revealed Bol4CL41 Negatively Regulates Black Rot Resistance in Cabbage

文献类型： 外文期刊

作者： Hongxue Ma;Siping Deng;Congcong Kong;Yulun Zhang;Tong Zhao;Jialei Ji;Yong Wang;Yangyong Zhang;Mu Zhuang;Limei Yang;Marina Lebedeva;Vasiliy Taranov;Anna M. Artemyeva;Zhiyuan Fang;Jingquan Yu;Zhangjian Hu;Honghao Lv

作者机构：

关键词： 4CL gene family;black rot;cabbage;functional validation;multi-time point transcriptome

期刊名称： International Journal of Molecular Sciences

ISSN： 1661-6596

年卷期： 2025 年 26 卷 13 期

页码：

收录情况： SCIE（2025版）

摘要： 4-coumarate-CoA ligase (4CL) plays a crucial role in the phenylpropanoid metabolic pathway and is a key enzyme involved in plant growth and stress responses. Black rot, caused by Xanthomonas campestris pv. campestris (Xcc) is a major bacterial disease affecting the production of global cruciferous crop-like cabbage (Brassica oleracea var. capitata). However, the role of 4CL genes in cabbage resistance to black rot remains unclear. In this study, transcriptome sequencing was conducted using resistant cabbage MY and susceptible cabbage LY at 0, 6, 24, and 48 h post-inoculation. KEGG analysis identified the enrichment of the phenylpropanoid biosynthesis pathway, and significant expression changes of 4CL genes were determined through the expression heat map. Further genome-wide analysis revealed 43 Bol4CL gene family members on the cabbage genome distributed across nine chromosomes. Gene structure and protein motif analysis revealed similarities in motifs within the same evolutionary branch, but variations in gene structure. A combination of Bol4CL gene expression profiles and differentially expressed genes (DEGs) from the transcriptome identified Bol4CL41 as a key gene for further study. Inoculation of overexpressed Bol4CL41 T2 generation stably expressed cabbage seedlings demonstrated significantly larger lesion areas compared to wild type cabbage, indicating that Bol4CL41 negatively regulates resistance to black rot in cabbage. The analysis of multi-time point transcriptomes in cabbage and the functional study of the Bol4CL gene family enhance our understanding of the mechanisms underlying plant disease resistance. This provides compelling evidence and experimental support for elucidating the mechanisms of black rot resistance in cabbage.

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