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1993 Fiscal Year Final Research Report Summary

The Induced Resistance of Timothy infected Acremonium Endophyte

Research Project

Project/Area Number 04660128
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 製造化学・食品
Research InstitutionHokkaido University

Principal Investigator

YOSHIHARA Teruhiko  Hokkaido Univ.Agric, Assoc.Professor, 農学部, 助教授 (90002071)

Project Period (FY) 1992 – 1993
KeywordsAcremonium Endophyte / Timothy / Induced Resistance / Fungitoxic compound / Chkol / Chkolic Acid / Chokolal
Research Abstract

Choke disease fungus Epichloe typhina (Pers. ex Fr.) Tul., an endophyte of timothy grass (Phleum prantense L.), is associated with resistance to leaf spot disease (Cladosporium phelei) in timothy grass plants. Timothy chokes, stromata of E.typhina, contain many classes of antifungal compounds. We condidered that the resistance may be associated with the presence of antifungal metabolites which were produced by E.typhina or the host plant, and as a result of interaction between the two organisms.
The auther started to isolate biological active compounds and finally isolated 13 sesquiterpens [six chkols(G-L), chkolal A, six chkolic acids (A-D)], three lactons [gamahonolide (A and B) and gamahorin], four lignans, six phytols and two sphingoids. Some of them are new fungitoxic compounds. Phytols stimulated the growth of Cladosporium herbarum.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] H.Koshino: "Gamahonolides A,B and Gamahorin,Novel Antifungal Compounds from Stromata of Epichloe typhina on Phleum pratense" Biosci.Biotech.Biochem.56. 1096-1099 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Koshino: "Two Sphingoid Derivatives from Stromata of Epichloe Typhina on Phleum Pratense" Phytochem.31. 3757-3759 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Koshino: "Gamahonolides A, B and Gamahorin, Novel Antifungal Compounds from Stromata of Epichloe typhina on Phleum pratense" Biosci.Biotech.Biochem.56. 1096-1099 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Koshino: "Derivatives from Stromata of Epichloe Typhina on Phleum Pratense" Phytochem. 31. 3757-3759 (1992)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1995-03-27  

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