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Transcriptome analysis reveals downregulation of virulence-associated genes expression in a low virulence Verticillium dahliae strain

文献类型： 外文期刊

作者： Jin, Lirong 1 ; Chen, Dong 4 ; Liao, Shengjie 4 ; Zhang, Yu 4 ; Yu, Fengyun 5 ; Wan, Peng 1 ; Yu, Dazhao 1 ; Wu, Qijia 5 ; Z 1 ;

作者机构： 1.Minist Agr, Key Lab Integrated Pest Management Crops Cent Chi, Beijing, Peoples R China

2.Hubei Acad Agr Sci, Hubei Key Lab Crop Dis Insect Pests & Weeds Contr, Wuhan 430064, Hubei, Peoples R China

3.Hubei Acad Agr Sci, Plant Protect Soil & Fertilizer Res Inst, Wuhan 430064, Hubei, Peoples R China

4.ABLife Inc, Ctr Genome Anal, Opt Valley Int Biomed Pk,Bldg 18-1, Wuhan 430075, Hubei, Peoples R China

5.ABLife Inc, Lab Genome Res & Human Heath, Opt Valley Int Biomed Pk,Bldg 18-1, Wuhan 430075, Hubei, Peoples R China

6.Huazhong Agr Univ, State Key Lab Agr Microbiol, Wuhan 430064, Hubei, Peoples R China

7.Huazhong Agr Univ, Key Lab Plant Pathol Hubei Prov, Wuhan 430064, Hubei, Peoples R China

8.Seqhlth Technol Co Ltd, Wuhan 430075, Hubei, Peoples R China

关键词： Verticillium dahliae; RNA-seq; Virulence; In vitro growth

期刊名称：ARCHIVES OF MICROBIOLOGY （ 影响因子：2.552； 五年影响因子：2.475 ）

ISSN： 0302-8933

年卷期： 2019 年 201 卷 7 期

页码：

收录情况： SCI

摘要： Verticillium dahliae causes wilt diseases and early senescence in numerous plants, including agricultural crops such as cotton. In this study, we studied two closely related V. dahliae strains, and found that V991w showed significantly reduced virulence on cotton than V991b. Comprehensive transcriptome analysis revealed various differentially expressed genes between the two strains, with more genes repressed in V991w. The downregulated genes in V991w were involved in production of hydrophobins, melanin, predicted aflatoxin, and membrane proteins, most of which are related to pathogenesis and multidrug resistance. Consistently, melanin production in V991w in vitro was compromised. We next obtained genomic variations between the two strains, demonstrating that transcription factor genes containing fungi specific transcription factor domain and fungal Zn2-Cys6 binuclear cluster domain were enriched in V991w, which might be related to pathogenicity-related genes downregulation. Thus, this study supports a model in which some virulence factors involved in V. dahliae pathogenicity were pre-expressed during in vitro growth before host interaction.

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