한국미생물·생명공학회지 (Microbiology and Biotechnology Letters)

  • 제30권4호
  • /
  • Pages.339-345
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  • 2002
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  • 1598-642X(pISSN)
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  • 2234-7305(eISSN)
한국미생물·생명공학회 (The Korean Society for Microbiology and Biotechnology)
권호 표지

Fusarium속 균주로부터 분리한 Equisetin, Zearalenone 및 8'-Hydroxyzearalenone의 식물병원곰팡이에 대한 항균활성

Antifungal Activities of Equisetin, Zearalenone, and 8'-Hydroxyaearalenone Isolated from Fusarium Species against Plant Pathogenic Fungi.

  • 김진철 (한국화학연구원 농약스크리닝연구팀) ;
  • 박중협 (한국화학연구원 농약스크리닝연구팀) ;
  • 최경자 (한국화학연구원 농약스크리닝연구팀) ;
  • 김흥태 (한국화학연구원 농약스크리닝연구팀) ;
  • 최용호 (한국화학연구원 농약스크리닝연구팀) ;
  • 조광연 (한국화학연구원 농약스크리닝연구팀)
  • 발행 : 2002.12.01
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초록

가지에서 분리한 F. equiseti FO-68균주와 벗풀에서 분리한 Fusarium sp. FO-510균주로부터 항균물질을 분리한 후 이들의 식물병원곰팡이에 대한 항균활성을 in vitro및 in vivo에서 조사하였다. FO-68균주의 쌀배양체로부터 하나의 항생물질을 순화하였는데 , 이 물질은 equisetin이라는 물질로 동정되었다. 그리고 FO-510균주의 쌀배양체로부터는 두 개의 항균활성 물질을 분리하였는데, 이들은 zearalenone과 8'-hydroxyzearalenone으로 동정되었다. Equisetin과 zearalenone은 in vitro에서 실험한 식물병원곰팡이 대부분에 대해서 높은 항균활성을 보였지만, 8'-hydroxyzearalenone은 거의 항균활성이 없었다. In vivo assay에서 equisetin은 토마토ㆍ잿빛곰팡이병과 토마토ㆍ역병에 방제효과가 컸으며, zearalenone은 벼ㆍ도열병, 벼ㆍ잎집무의마름병, 토마토ㆍ잿빛곰팡이병 및 토마토ㆍ역병에 대하여 효과를 나타내었다. 하지만 8'-hydroxyzearalenone는 토마토ㆍ잿빛곰팡이병을 제외한 나머지 식물병의 발생은 억제하지 못했다. Equisetin, zearalenone 및 8'-hydroxyzearalenone의 항진균활성은 본 논문에서 처음으로 보고하는 바이다.

Antifungal substances were isolated from solid cultures of Fusarium equiseti FO-68 obtained from arrowhead and Fusarium sp. FO-510 obtained from egg plant, and then their antifungal activities were investigated against plant pathogenic fungi in vitro and in vivo. An antifungal substance was purifed from rice solid cultures of F. equiseti FO-68 and identified as equisetin. In addition, two antibiotic substances were isolated from solid cultures of Fusarium sp. FO-510 and their chemical structures were determined to be zearalenone and 8'-hydroxyzearalenone. in vitro, equisetin and zearalenone inhibited mycelial growth of most of the plant pathogenic fungi tested, whereas 8'-hydroxyzearalenone hardly inhibited fungal growth. In vitro, equisetin effectively controlled the development of tomato gray mold and tomato late blight. Zearalenone exhibited in vivo antifungal activity against rice blast, rice sheath blight, tomato gray mold, and tomato late blight. However, 8'-hydroxyzearale-none did not control the development of plant diseases except tomato gray mold. This is the first report on the antifungal activities of equisetin, zearalenone, and 8'-hydroxyzearalenone.

키워드

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