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A hypothesis of mycovirus ecology: Can mycoviruses be transmitted between different fungal species?

Research Project

Project/Area Number 25660039
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Plant protection science
Research InstitutionNational Agriculture and Food Research Organization

Principal Investigator

KANEMATSU Satoko  独立行政法人農業・食品産業技術総合研究機構, 果樹研究所リンゴ研究領域, 主任研究員 (40355433)

Co-Investigator(Kenkyū-buntansha) YAEGASHI Hajime  独立行政法人農業・食品産業技術総合研究機構, 果樹研究所リンゴ研究領域, 主任研究員 (90582594)
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsマイコウイルス / 植物病原糸状菌 / 植物病理学 / 伝搬
Outline of Final Research Achievements

In general, RNA mycoviruses (fungal viruses) are transmitted through hyphal anastomosis between mycelially compatible fungal strains, and their intracellular life cycle within the host limits transmission to different species and even to incompatible strains of the same species. However, in our field observations, we found a novel virus appeared in the ascomycetous fungus, Rosellinia necatrix, in an apple orchard. This finding suggests diverse infection routes for mycoviruses. In this study, we show that mycoviruses can infect R. necatrix through the soil under green-house conditions. After incubating virus-free R. necatrix strains in soil-filled buckets, R. necatrix sub-isolates were obtained, and the presence of viral dsRNAs was confirmed in the sub-isolates using dot-blot hybridization with an anti-dsRNA antibody. Sequencing analyses revealed that the viruses in the R. necatrix sub-isolates were novel partitivirus and endornavirus.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (1 results)

All 2015

All Presentation (1 results)

  • [Presentation] 白紋羽病菌へのマイコウイルスの自然感染現象の再現2015

    • Author(s)
      兼松聡子、八重樫元、伊藤伝
    • Organizer
      平成27年度日本植物病理学会大会
    • Place of Presentation
      明治大学
    • Year and Date
      2015-03-28 – 2015-03-31
    • Related Report
      2014 Annual Research Report

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Published: 2014-07-25   Modified: 2019-07-29  

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