The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Phytotoxicity of dehydrofusaric acid isolated from Fusarium oxysporum against several plants

Fusarium oxysporum이 생산하는 dehydrofusaric acid의 몇 가지 식물 생육에 대한 활성

  • Hong, Kyung-Sik (Agrochemical Screening Research Team, Korea Research Institute of Chemical Technology) ;
  • Choi, Gyung-Ja (Agrochemical Screening Research Team, Korea Research Institute of Chemical Technology) ;
  • Kim, Heung-Tae (Department of Agricultural Biology, Chungbuk National University) ;
  • Hwang, In-Taek (Agrochemical Screening Research Team, Korea Research Institute of Chemical Technology) ;
  • Cho, Kwang-Yun (Agrochemical Screening Research Team, Korea Research Institute of Chemical Technology) ;
  • Kim, Jin-Cheol (Agrochemical Screening Research Team, Korea Research Institute of Chemical Technology)
  • 홍경식 (한국화학연구원 농약스크리닝연구팀) ;
  • 최경자 (한국화학연구원 농약스크리닝연구팀) ;
  • 김흥태 (충북대학교 농생물학과) ;
  • 황인택 (한국화학연구원 농약스크리닝연구팀) ;
  • 조광연 (한국화학연구원 농약스크리닝연구팀) ;
  • 김진철 (한국화학연구원 농약스크리닝연구팀)
  • Published : 2002.09.30
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Abstract

A phytotoxin was purified by repeated chromatography from liquid cultures of Fusarium oxysporum BG isolated from barnyardgrass. Its chemical structure was determined to be dehydrofusaric acid by mass and NMR spectral analyses. The substance showed a potent phytotoxic activity against growth of duckweed with a $EC_{50}$ value of $1.5{\mu}g/ml$. It also inhibited the root growth of barnyard millet, cress, barnyard grass, and rice cultivar 'Dongjin'. However, it had no inhibitory activity against seed germination of barnyard millet and cress, and the shoot growth of the four plant species.

피에서 분리한 Fusarium oxysporum균주로부터 여러 번의 chromatography를 통하여 좀개구리밥의 생장을 억제하는 물질을 분리하였다. 질량분석과 핵자기공명분석을 통하여 이 물질은 dehydrofusaric acid로 동정되었다. Dehydrofusaric acid는 좀개구리밥의 생장에 대한 $EC_{50}$ 값이 $1.5{\mu}g/ml$로 매우 활성이 높은 것으로 나타났다. 또한 이 물질은 식용피, cress, 강피 및 동진벼의 뿌리의 생장도 억제하였으나, 식용피와 cress의 발아 및 네 가지 식물의 지상부의 생장에는 전혀 영향을 주지 않았다.

Keywords

References

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