Asian Journal of Turfgrass Science (아시안잔디학회지)

Turfgrass Society of Korea (한국잔디학회)
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Screening of Cellulose Decomposing Microorganisms for Functional Improvement for SCB (Slurry Composting and Biofiltering) Liquid Fertilizer

SCB저농도액비의 기능성향상을 위한 섬유소 분해 미생물균주탐색

  • Received : 2011.05.17
  • Accepted : 2011.06.06
  • Published : 2011.06.30
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Abstract

This study was performed to functional improvement by fermenting of SCB (Slurry Composting and Biofiltering) liquid fertilizer. After screening of cellulose decomposing test using microorganisms originated from composts produced with turf grass clipping, five kinds of Cellulose Decomposing Microorganisms (CDMs) were selected. The optimum medium for CDMs culture was Tryptic soy broth. The optimum fermenting time of CDMs in SCB liquid fertilizer was 36 hour. In addition, CDMs showed antimicrobial activity in vitro. Sclerotinia homoeocarpa, Rhizoctonia solani AG2-2(IV) and Pythium spp. were inhibited by CDMs, but Rhizoctonia solani AG2-2(IIIB) in vitro uneffected by CDMs we isolated.

본 연구는 SCB저농도액비의 기능성향상을 위한 섬유소분해 미생물균주를 탐색하고 선발하기 위해 수행되었다. 예초물 퇴비에서 섬유소분해 미생물균주는 배양 및 형태적 특성에 따라 5개의 균주를 선발하였다. 선발된 섬유소 분해 미생물균주의 배지에 따른 균생장은 TSB배지에서 배양할 때 균의 생장속도가 가장 높게 나타났다. 섬유소분해 미생물균주를 SCB저농도액비에 접종한 결과, 접종 후 18시간에는 균생장이 거의 이루어지지 않다가 24시간이 지나면서 급격히 증가하여 36시간 후에 균생장이 최고조를 이룬 뒤 48시간 이후에는 사멸기가 시작되는 것으로 조사되었다. NB배지에서 보다 TSB배지에서 CDMs의 생장속도가 빠른 것으로 조사되었다. 주요 잔디병원균에 대한 항균력을 검정한 결과 Sclerotinia homoeocarpa, Rhizoctonia solani AG2-2(IV)와 Pythium spp.에서 CDMs을 첨가한 SCB 저농도액비는 각각 14.1, 11.0, 26.8% 균사생장이 억제되었다. 통계적인 유의차는 없었으나, 잔디 퇴비에서 선발된 CDMs을 배양한 SCB저농도액비를 지속적으로 코스관리에 이용한다면 일부 잔디병원균에 효능이 있을 것으로 기대된다.

Keywords

References

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