Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Characteristics and Antimicrobial Effects of Novel Burkholderia cepacia No. 15-2 Isolated from Compost

퇴비로부터 분리된 Burkholderia cepacia No.15-2의 특성과 항균 효과

  • Yun, Soon-Il (Faculty of Applied Biological Science Hiroshima University)
  • Published : 2003.12.01
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Abstract

To develop the functional-compost containing antifungal substance by using antagonistic microorganisms, Spinacia oleracea L and Rhizoctonia solani Kuhn O-28 were used as a model plant and phytopathogen, respectively. Total 80 strains were isolated from the compost of various waste foods mixture processed for a year. Among them, No.15-2 strain was selected due to its highest antifungal activity against R. solani Kuhn O-28 and was identified phyno- and phylogenotypically as Burkholderia cepacia genomovar V. which is rare probability in pathogen, by 16S rDNA sequencing and specific primer pair PCR method. B. cepacia No.15-2 preferentially dominated during the compost and its cell numbers were maintained almost $${\times}$10^{13}$ cuf/g for 15 days. The morbidity caused by R. solani Kuhn O-28 in S. oleracea L cultivation was reduced to 40% by addition of B. cepacia No.15-2. In conclusion, the antifungal compost using B. cepacia No.15-2 could be applied to biocontrol of various crops blights caused by fungal pathogen.

길항미생물을 이용한 항곰팡이성 퇴비의 개발을 목적으로 공시 식물로써 Spinacia oleracea L과 식물 병원균 Rhizoctonia solani Kuhn O-28을 모델로 사용하여 수행 되었다. 다양한 음식쓰레기를 일년동안 숙성시킨 퇴비로부터 80 균주를 분리하였고, 그 중 No.15-2 균주가 R. solani Kuhn O-28에 대해 가장 높은 항곰팡이 활성을 보였다. 16S rDNA sequencing과 primer pair PCR에 의해 표현형과 분류학적으로 거의 독성이 없는 것으로 밝혀진 Burkholderia cepacia genomoval V로 분류되었다. 이 B. cepacia No. 15-2가 퇴비화 중에 우점하였으며 그 균수는 15일 동안 거의 $10^{13}$ cfu/g을 유지하였다. S. oleracea L을 배양 했을 경우 R. solani Kuhn O-28에 의한 발병율은 B. cepacia No.15-2를 첨가함으로써 40% 감소하였다. 결론적으로 B. cepacia No.15-2는 다양한 식물의 곰팡이 유래의 병을 방제하는 데 이용 가능할 것으로 사료된다.

Keywords

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