Root Transcriptome and Metabolome Profiling Reveal Key Phytohormone-Related Genes and Pathways Involved Clubroot Resistance in Brassica rapa L.
文献类型： 外文期刊
作者： Wei, Xiaochun 1 ; Zhang, Yingying 1 ; Zhao, Yanyan 1 ; Xie, Zhengqing 2 ; Hossain, Mohammad Rashed 3 ; Yang, Shuangjuan 1 ; Shi, Gongyao 2 ; Lv, Yanyan 1 ; Wang, Zhiyong 1 ; Tian, Baoming 2 ; Su, Henan 1 ; Wei, Fang 1 ; Zhang, Xiaowei 1 ; Yuan, Yuxiang 1 ;
作者机构： 1.Zhengzhou Univ, Henan Acad Agr Sci, Inst Hort, Grad T&R Base, Zhengzhou, Peoples R China
2.Zhengzhou Univ, Sch Agr Sci, Henan Int Joint Lab Crop Gene Resources & Improve, Zhengzhou, Peoples R China
3.Bangladesh Agr Univ, Dept Genet & Plant Breeding, Mymensingh, Bangladesh
关键词： clubroot resistance; RNA-seq; phytohormone; metabolome profiling; Brassica rapa L; P; brassicae
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2021 年 12 卷
页码：
收录情况： SCI
摘要： Plasmodiophora brassicae, an obligate biotrophic pathogen-causing clubroot disease, can seriously affect Brassica crops worldwide, especially Chinese cabbage. Understanding the transcriptome and metabolome profiling changes during the infection of P. brassicae will provide key insights in understanding the defense mechanism in Brassica crops. In this study, we estimated the phytohormones using targeted metabolome assays and transcriptomic changes using RNA sequencing (RNA-seq) in the roots of resistant (BrT24) and susceptible (Y510-9) plants at 0, 3, 9, and 20 days after inoculation (DAI) with P. brassicae. Differentially expressed genes (DEGs) in resistant vs. susceptible lines across different time points were identified. The weighted gene co-expression network analysis of the DEGs revealed six pathways including "Plant-pathogen interaction" and "Plant hormone signal transduction" and 15 hub genes including pathogenic type III effector avirulence factor gene (RIN4) and auxin-responsive protein (IAA16) to be involved in plants immune response. Inhibition of Indoleacetic acid, cytokinin, jasmonate acid, and salicylic acid contents and changes in related gene expression in R-line may play important roles in regulation of clubroot resistance (CR). Based on the combined metabolome profiling and hormone-related transcriptomic responses, we propose a general model of hormone-mediated defense mechanism. This study definitely enhances our current understanding and paves the way for improving CR in Brassica rapa.
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