Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Bioactivities of Korean Ginkgo (Ginkgo biloba L.) Extract and Its Potential as a Natural Pesticide

은행나무 추출물의 생물활성 및 천연물농약으로 이용 가능성

  • Lee, Hyang-Burm (Biomaterial Research Division, Korea Research Institute of Bioscience & Biotechnology) ;
  • Kim, Han-Nah (Daedok Middle School) ;
  • Kim, Mi-Kyung (Daedok Middle School) ;
  • Kim, Chang-Jin (Biomaterial Research Division, Korea Research Institute of Bioscience & Biotechnology) ;
  • Kwon, Oh-Sung (Biomaterial Research Division, Korea Research Institute of Bioscience & Biotechnology)
  • 이향범 (한국생명공학연구원 생물소재연구부) ;
  • 김한나 (대덕중학교) ;
  • 김미경 (대덕중학교) ;
  • 김창진 (한국생명공학연구원 생물소재연구부) ;
  • 권오성 (한국생명공학연구원 생물소재연구부)
  • Published : 2003.06.01
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Abstract

Bioactivities of Korean ginkgo (Ginkgo biloba L.) extract were investigated against several fungi, general bacteria and insect pests. Crude methanolic extracts of different parts of Korean ginkgo showed different bioactivities depending on the target organisms. The methanolic extract showed in vitro antimicrobial activity at dose of 200 ug per paper disc. The extract of ginkgo stalk was some higher than seed coat and root. The extract also showed a remarkable in vivo antifungal activity against green mold (Trichoderma harzianum) on compost surface of spawn bags and in vivo insecticidal activity to Nilaparvata lugens, Plutella xylostella and Tetranychus urticae. This study suggests that Korean ginkgo extracts have a potential as a natural pesticide.

본 연구는 국내산 은행나무(Ginkgo biloba) 뿌리, 열매껍질, 가지 등 부위별 추출물의 진균류, 일반세균 및 해충에 대한 생물활성을 조사하였다. 연구 결과 푸른곰팡이 병균(T.harzianum) 및 대장균(E.coli) 등에 대해 200 ug/disc 농도에서 저해활성을 나타냈으며, 줄기부위가 더 높은 항미생물활성을 보였다. 특히 버섯 배양상 표면에 1mg/ml 수준으로 처리할 경우 푸른 곰팡이병의 발생을 상당히 억제시키는 효과를 나타냈다. 한편, 은행나무 부위별 추출물을 500 ug/ml으로 공시 해충을 처리하였을 경우 대부분의 추출물이 살충활성을 보이며 벼멸구, 배추좀나방, 두점박이응애에 대해 높은 살충활성을 나타냈으며, 특히, 벼멸구에 대해서 8ug/ml의 낮은 농도에서도 살충활성을 나타냈다. 본 연구결과 국내산 은행나무 추출물이 항미생물 및 살충활성이 확인되었는 바 식물유래 병해충 방제용 천연물 농약으로서의 잠재성을 보여주었다.

Keywords

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