Identification genomic regions which are responsible for pathogenicity of Verticillium dahliae

2020 Fiscal Year Final Research Report

• Project/Area Number: 18K05641
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 39040:Plant protection science-related
• Research Institution: Chiba University
• Principal Investigator: Usami Toshiyuki 千葉大学, 大学院園芸学研究科, 准教授 (50334173)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: 植物病原糸状菌 / 病原性 / 植物病害 / 土壌伝染病 / 菌類

Outline of Final Research Achievements

Verticillium dahliae causes vascular wilt disease on various dicot plant species. A genomic region which is responsible for pathogenicity on tomato had been estimated in our previous study. In this study, we successfully estimated a genomic region which is responsible for pathogenicity on sweet pepper. Both genomic regions were analyzed and candidates for pathogenicity-determining genes were estimated. Host range of V. dahliae is probably determined by combination of these genomic sequences.

Free Research Field

植物病理学

Academic Significance and Societal Importance of the Research Achievements

半身萎凋病菌は様々な種類の植物に感染する植物病原菌であるが、病原性を決定するメカニズムは解明されていない。本研究では、病原性の異なる菌株同士を遺伝的に交雑することで、本菌のトマトおよびピーマンに対する病原性を決定するゲノム領域を推定できた。また、その領域に存在する病原性決定遺伝子の候補を明らかにした。これを手がかりとして本菌の病原性メカニズムを解明できれば、病害を防ぐ方法の開発につながる。