2018 Fiscal Year Final Research Report
Study on mechanisms of pathogenicity divergence in Fusarium oxysporum by structural and functional analyses of small chromosomes
| Project/Area Number |
16H02536
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant protection science
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
ARIE Tsutomu 東京農工大学, (連合)農学研究科(研究院), 教授 (00211706)
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| Co-Investigator(Kenkyū-buntansha) |
飯田 祐一郎 国立研究開発法人農業・食品産業技術総合研究機構, 野菜花き研究部門, 主任研究員 (00456609)
荒添 貴之 東京理科大学, 理工学部応用生物科学科, 助教 (40749975)
小松 健 東京農工大学, (連合)農学研究科(研究院), 准教授 (60451837)
川部 眞登 富山県農林水産総合技術センター, 富山県農林水産総合技術センター園芸研究所, 主幹研究員 (60462678)
赤木 靖典 鳥取大学, (連合)農学研究科(研究院), プロジェクト研究員 (60626589)
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| Research Collaborator |
KASHIWA Takeshi
AYUKAWA Yu
SAITO Hiroki
KOTERA Syunsuke
AKAI Kotaro
JO Seong-Mi
HANYUDA Saeri
KATO Yukiko
SAKAI Misa
KAMAKURA Takashi
TURGEON B Gillian
YUN Sung-Hwan
REP Martijn
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | フザリウム / 小型染色体 / 宿主特異性 / 病原性分化 / トマト萎凋病 |
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| Outline of Final Research Achievements |
Phytopathogenic Fusarium oxysporum is differentiated in virulence like formae speciales based on a range of plant species which can be the host, and races based on a range cultivars which can be the host. Although this differentiation is very clear, the mechanism of differentiation has been unknown. Recently, it has been reported that F. oxysporum may have a small chromosome that is not essential for growth, and this small chromosome is involved in virulence. In this study, analyses and comparison of genes and structures on small chromosomes of F. oxysporum isolates with different virulence, suggesting that some genes may be involved in virulence, host specificity determination, race determination, etc. We obtained basic knowledge for elucidating pathogenic differentiation mechanisms such as forms and races.
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| Free Research Field |
植物病理学
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| Academic Significance and Societal Importance of the Research Achievements |
植物病原性Fusarium oxysporumの分化型やレースの未詳な分化機構を、小型染色体の解析を通して明らかにすることができる可能性を示した。これは、これまでの病原と植物（抵抗性品種）のいたちごっこのメカニズム解析および小型染色体の寄与の解明につながり、植物病理学的に興味深いばかりでなく、今後の育種などによる病害防除のヒントになり、社会的意義がある。
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