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Comparative transcriptomics identifies the key in planta-expressed genes of Fusarium graminearum during infection of wheat varieties

文献类型： 外文期刊

作者： Tu, Qiang 1 ; Wang, Lirong 1 ; An, Qi 1 ; Shuai, Jie 1 ; Xia, Xiaobo 3 ; Dong, Yifan 1 ; Zhang, Xu 1 ; Li, Gang 3 ; He, Yi 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, JAAS Joint Ctr Wheat Dis, Res Ctr Wheat Scab, CIMMYT, Nanjing, Peoples R China

2.Southwest Univ Sci & Technol, Wheat Res Inst, Sch Life Sci & Engn, Mianyang, Sichuan, Peoples R China

3.Nanjing Agr Univ, Coll Plant Protect, Dept Plant Pathol, Nanjing, Peoples R China

4.Yangzhou Univ, Jiangsu Coinnovat Ctr Modern Prod Technol Grain Cr, Yangzhou, Peoples R China

关键词： transcriptome; gene expression; Fusarium head blight; resistance; susceptibility; F; graminearum; wheat

期刊名称：FRONTIERS IN GENETICS （ 2022影响因子：3.7； 五年影响因子：4.3 ）

ISSN：

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

摘要： Fusarium head blight (FHB), caused mainly by the fungus Fusarium graminearum, is one of the most devastating diseases in wheat, which reduces the yield and quality of grain. Fusarium graminearum infection of wheat cells triggers dynamic changes of gene expression in both F. graminearum and wheat, leading to molecular interactions between pathogen and host. The wheat plant in turn activates immune signaling or host defense pathways against FHB. However, the mechanisms by which F. graminearum infects wheat varieties with different levels of host resistance are largely limited. In this study, we conducted a comparative analysis of the F. graminearum transcriptome in planta during the infection of susceptible and resistant wheat varieties at three timepoints. A total of 6,106 F. graminearum genes including those functioning in cell wall degradation, synthesis of secondary metabolites, virulence, and pathogenicity were identified during the infection of different hosts, which were regulated by hosts with different genetic backgrounds. Genes enriched with metabolism of host cell wall components and defense response processes were specifically dynamic during the infection with different hosts. Our study also identified F. graminearum genes that were specifically suppressed by signals derived from the resistant plant host. These genes may represent direct targets of the plant defense against infection by this fungus. Briefly, we generated databases of in planta-expressed genes of F. graminearum during infection of two different FHB resistance level wheat varieties, highlighted their dynamic expression patterns and functions of virulence, invasion, defense response, metabolism, and effector signaling, providing valuable insight into the interactions between F. graminearum and susceptible/resistant wheat varieties.

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