Studies on genome evolution and infection specificity of Colletotrichum species by cytological karyotyping analysis

2014 Fiscal Year Final Research Report

• Project/Area Number: 25660038
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Plant protection science
• Research Institution: Kyoto Prefectural University
• Principal Investigator: KUBO Yasuyuki 京都府立大学, 生命環境科学研究科(系), 教授 (80183797)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 炭疽病菌 / ゲノム / 染色体 / 系統進化 / 病原性 / ヘテロクロマチン / 感染特異性 / 付着器

Outline of Final Research Achievements

To analyze the mechanisms for phylogenetic development of pathogenesis of Colletotrichun fungi, we conducted cytological karyotype analysis. Especially, karyotyping of C.orbiculare, C.trifolii, C.spinosum C.lindemuthianum, C.malvarum, C.tebeest that belong to Orbiculare clade indicated that those fungi conserves karyotype with n=10 chromosomes that contain considerably large AT-rich heterochromatin region. Pathogenesis specificity development of Orbiculare clade fungi was evaluated by inoculation assay. C.sidae of which natural host is Malvaceae plant could infect Asteraceae plants and C.orbiculare, C.trifolii, C.spinosum of which natural hosts are not Malvaceae plant infected Malvaceae plant, indicating that Orbiculare clade fungi share plant hosts that might be a potential ancestral common host plants.

Free Research Field

植物病理学