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2004 Fiscal Year Final Research Report Summary

Construction of inducing disease resistance by Heteroconium chaetospira

Research Project

Project/Area Number 14360025
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 植物保護
Research InstitutionTohoku University

Principal Investigator

HASHIBA Teruyoshi  Tohoku University, Graduate School of Agricultural Science, Professor, 大学院・農学研究科, 教授 (20189476)

Co-Investigator(Kenkyū-buntansha) SATOH Shigeru  Tohoku University, Graduate School of Agricultural Science, Associate Professor, 大学院・農学研究科, 助教授 (40108428)
Project Period (FY) 2002 – 2004
Keywordsroot endophytic fungus / Heteroconium chaetospira / Chinese cabbage / systemic resistance / effective biocontrol agent
Research Abstract

Root endophytic fungus Heteroconium chaetospiura is known to induce strong antagonistic responses in host plants and the phenomenon can be applied to provide resistance to different species of plants and pathogens. We found that, when used as a preinoculum, H.chaetospira suppressed the incidence of clubroot and Verticillium yellows when test plants were post-inoculated with the causal agents of these diseases.
Furthermore, colonization of roots by H.chaetospira could induce systemic resistance in Chinese cabbage and reduce the incidence of bacterial leaf spot and Alternaria leaf spot. H.chaetospira penetrates through the outer epidermal cells of its host, passes into the inner conxtex, and grows throughout the cortical cells, including those of the root tip region. H.chaetospira can grow and persist for long periods and may be less affected by microbial interactions outside the root then other biocontrol agents. Basic environmental conditions, including temperature, moisture, sunlight, and soil physical and chemical characteristics, can greatly affect the physiology of the host plant and subsequent disease development, as well as alter interactions among the plant, pathogen, and biocontrol agents in various ways. H.chaetospira is an effective bioconrol agent against clubroot in Chainese cabbage at low to moderate soil moisture range and a pathogen resting spore density of 10 resting spores per gram of soil in situ.

  • Research Products

    (9 results)

All 2005 2004 2003

All Journal Article (7 results) Book (2 results)

  • [Journal Article] Effects of environmental conditions on the biological control of clubroot in Chinese cabbage by root endophytic fungus H.chaetospira2005

    • Author(s)
      K.Narisawa et al.
    • Journal Title

      Plant Dis. 89(3)

      Pages: 285-290

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Developments in Plant Protection-Bridging Bioscience2005

    • Author(s)
      T.Hashiba et al.
    • Journal Title

      Softscience, Inc.

      Pages: 338

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Morphologhical development of root endophytic fungus, Heteroconium chaetospira in roots of Chinese cabbage2004

    • Author(s)
      M.Yonezawa et al.
    • Journal Title

      Mycoscience 45(6)

      Pages: 367-371

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Control of Verticillium yellows in Chinese cabbage by the Dark-septate endophytic fungus LtVB32004

    • Author(s)
      K.Narisawa et al.
    • Journal Title

      Phytopathology 94

      Pages: 412-418

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Bio-frontier of Recognition and Response in Plant-Microbe Interactions2004

    • Author(s)
      T.Hashiba et al.
    • Journal Title

      PSJ Plant-Microbe Interactions Symposium

      Pages: 149

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Induced systemic resistance of Chinese cabbage to bacterial leaf spot and Alternaria leaf spot by the root endophytic fungus, Heteroconium chaetospira2003

    • Author(s)
      S.Morita et al.
    • Journal Title

      J.Gen.Plant Pathol. 69

      Pages: 71-75

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Ultrastructural study on interaction between a sterile, white endophytic fungus and eggplant roots2003

    • Author(s)
      K.Narisawa et al.
    • Journal Title

      J.Gen.Plant Pathol. 69

      Pages: 292-296

    • Description
      「研究成果報告書概要(和文)」より
  • [Book] 新しい作物保護の展開-バイオサイエンスへのかけはし-2005

    • Author(s)
      羽柴 輝良 編著
    • Total Pages
      338
    • Publisher
      ソフトサイエンス社
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] 自他識別と応答のバイオフロンティア(植物感染生理談話会論文集第40号)2004

    • Author(s)
      羽柴 輝良 編著
    • Total Pages
      149
    • Publisher
      仙台共同印刷
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2006-07-11  

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