Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Isolation and Selection of Functional Microbes for Eco-friendly Turfgrass Management in Golf Course from Livestock Manure Compost

친환경 잔디관리를 위한 가축분퇴비 중 기능성미생물의 분리 및 선발

  • Received : 2017.04.06
  • Accepted : 2017.05.26
  • Published : 2017.06.30
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Abstract

Functional microorganisms decompose various organic matter by enzyme activity and suppress plant disease caused by pathogen. This study was conducted to isolate and select functional microorganisms with protein or carbohydrate degradation activities and antagonistic activity against turfgrass fungal pathogens for eco-friendly turfgrass management in golf course from compost containing livestock manure of poultry or swine. Totally 68 isolates collected from livestock manure compost strains were isolated and tested for their activities of amylase, protease and lipase and antagonistic activities against Rhizoctonia solani AG2-2, R. solani AG1-1, and Sclerotinia homoeocarpa. Among the isolates, 34 strains were selected as functional microbes showing higher activities of amylase and protease. Three isolates of ASC-14, ASC-18, and ASC-35 among the 34 strains were selected as antifungal bacterial strains repressing the above 3 turfgrass fungal pathogens. Analysis results of 16s rRNA gene sequence and phylogenic cluster indicated that ASC-14 and ASC-18 belonged to Bacillus amyloliquefaciens, while ASC-35 was B. subtilis, respectively.

본 연구는 미생물을 이용하여 친환경적인 잔디관리를 위해 계분이나 돈분의 퇴비화 과정에서 얻어진 가축분 퇴비로부터 단백질 및 탄수화물 분해능과 잔디 갈색퍼짐병(large patch), 갈색마름병(brown patch), 그리고 동전마름병(dollar spot) 병원균에 항균활성을 보이는 미생물을 분리하기 위하여 실시하였다. 분리된 미생물은 총 68균주였고, 이들을 대상으로 단백질 분해활성, 탄수화물 분해활성 및 잔디 주요병원균에 대한 항균활성을 조사하여 활성이 높은 미생물 34균주를 선발하였다. 이 중에서 단백질과 탄수화물 분해 및 항균활성을 나타내는 균주인 ASC-14, ASC-18 및 ASC-35를 선발하였다. 이들 선발 균주를 대상으로 16s rRNA 유전자 분석 결과 ASC-14와 ASC-18은 B. amyloliquefaciens로 확인되었고, 반면에 ASC-35는 B. subtilis 세균으로 최종 동정되었다.

Keywords

References

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