한국미생물·생명공학회지 (Microbiology and Biotechnology Letters)

  • 제39권4호
  • /
  • Pages.374-381
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  • 2011
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  • 1598-642X(pISSN)
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  • 2234-7305(eISSN)
한국미생물·생명공학회 (The Korean Society for Microbiology and Biotechnology)
권호 표지

DGGE 방법과 Pyrosequencing 방법을 이용한 지렁이 장내미생물의 다양성 분석

Comparative Analysis of Bacterial Diversity in the Intestinal Tract of Earthworm (Eisenia fetida) using DGGE and Pyrosequencing

  • 김은성 (연세대학교 생명과학기술학부) ;
  • 홍성욱 (연세대학교 생명과학기술학부) ;
  • 정건섭 (연세대학교 생명과학기술학부)
  • Kim, Eun-Sung (Division of Biological Science and Technology, Yonsei University) ;
  • Hong, Sung-Wook (Division of Biological Science and Technology, Yonsei University) ;
  • Chung, Kun-Sub (Division of Biological Science and Technology, Yonsei University)
  • 투고 : 2011.08.29
  • 심사 : 2011.11.23
  • 발행 : 2011.12.28
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초록

미생물과의 상호작용을 통하여 토양의 특성을 변화시킬 수 있는 지렁이 Eisenia fetida의 장내미생물 군집을 조사하기 위하여, 배양방법과 비배양방법인 DGGE와 pyrosequencing을 이용하여 8주와 16주 사육 지렁이의 장내미생물 군집을 분석하였다. 배양방법에서는 L. fusiformis(51%), B. cereus(30%), E. aerogenes(21%), 그리고 L. sphaericus (15%) 등이 우점미생물로 확인되었다. DGGE 분석에서는 B. cereus(15.1%), Enterobacter sp.(13.6%), uncultured bacterium (13.1%), 그리고 B. stearothermophilus(7.8%)가 우점미생물로 확인되었다. Pyrosequencing 분석에서는 Microbacterium soli(26%), B. cereus(10%), M. esteraromaticum(6%), 그리고 Frigoribacterium sp.(6%)가 우점미생물로 확인되었다. 그외에도 Aeromonas sp., Pseudomonas sp., Borrelia sp., Cellulosimicrobium sp., Klebsiella sp., and Leifsonia sp. 등의 미생물도 확인이 되었으며, 비배양 방법을 이용한 장내 미생물 군집 조사는 배양이 불가능한 미생물을 확인할 수 있을 뿐만 아니라 더 다양한 미생물 군집도 확인할 수 있었다.

The beneficial effects of Eisenia fetida on soil properties have been attributed to their interaction with soil microorganisms. The bacterial diversity of the intestinal tract of E. fetida was investigated by culture-dependent and culture-independent methods including denaturing gradient gel electrophoresis (DGGE) and pyrosequencing analyses. In a pure culture, Lysinibacillus fusiformis (51%), Bacillus cereus (30%), Enterobacter aerogenes (21%), and L. sphaericus (15%) were identified as the dominant microorganisms. In the DGGE analyses, B. cereus (15.1%), Enterobacter sp. (13.6%), an uncultured bacterium (13.1%), and B. stearothermophilus (7.8%) were identified as the dominant microorganisms. In the pyrosequencing analyses, Microbacterium soli (26%), B. cereus (10%), M. esteraromaticum (6%), and Frigoribacterium sp. (6%) were identified as the dominant microorganisms. The other strains identified were Aeromonas sp., Pseudomonas sp., Borrelia sp., Cellulosimicrobium sp., Klebsiella sp., and Leifsonia sp. The results illustrate that culture independent methods are better able to detect unculturable microorganisms and a wider range of species, as opposed to isolation by culture dependent methods.

키워드

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