미생물학회지 (Korean Journal of Microbiology)

  • 제50권2호
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  • Pages.152-157
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  • 2014
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  • 0440-2413(pISSN)
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  • 2383-9902(eISSN)
한국미생물학회 (The Microbiological Society of Korea)
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해면 Callyspongia elegans에 서식하는 세균군집의 계통학적 다양성

Phylogenetic Diversity of Bacterial Community Inhabited in Callyspongia elegans

  • 박소현 (제주대학교 해양의생명과학부) ;
  • 김지영 (제주대학교 기초과학연구소) ;
  • 김영주 (제주대학교 해양과환경연구소) ;
  • 허문수 (제주대학교 해양의생명과학부)
  • Park, So-Hyun (Department of Aquatic Life Medicine, College of Ocean Science) ;
  • Kim, Ji-Young (Marine and Environmental Research Institute, Jeju National University) ;
  • Kim, Young-Ju (Research Institute for Basic Science, Jeju National University) ;
  • Heo, Moon-Soo (Department of Aquatic Life Medicine, College of Ocean Science)
  • 투고 : 2014.05.12
  • 심사 : 2014.06.25
  • 발행 : 2014.06.30
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초록

이 논문은 Callyspongia elegans에서 서식하는 세균군집에 관한 내용이다. 해양세균은 marine agar를 사용하여 해면동물 C. elelgans에서 분리하였다. 그 결과 112균주를 분리하였으며, 본 연구에 사용하였다. 현미경 및 그람 염색을 통해 형태학적 표현형질을 측정하였다. 분리균주의 집락 색소는 노란색, 갈색, 아이보리색, 흰색으로 나타났다. 그람염색 결과 37균주는 그람양성균이였으며, 75균주는 그람 음성균이었다. 균주의 형태는 분리균주 중 79균주는 구균형태로 관찰되었고, 16균주는 간균이었다. 16S rDNA 유전자 염기서열 분석을 통해 분리균주들의 계통학적 특성을 파악하였다. 그 결과, 분리된 112균주는 5개의 주요 계통군이 확인되었으며, Alphaproteobacteria는 39%, Gammaproteobacteria는 22%, Acinobacteria는 14%, Firmicutes는 9%, Bacteroidetes는 6%에 속하는 것으로 나타났다. 그리고 16S rDNA 유전자 염기서열을 통해 계통분석 결과 15균주가 새로운 속 또는 종으로 분류될 가능성을 나타났으며, 앞으로 추가적인 실험이 필요한 실정이다.

The aim of this study was to investigate the bacterial community inhabited in Callyspongia elegans. Marine bacteria were isolated from the marine sponge C. elegans using marine agar. The resulting 112 isolated pure cultures were then used for further study. They were characterized by determining morphological characteristics through Gram's staining and morphological observation. The colony pigments of bacterial isolates were characterized as yellow, brown, ivory, and white. Thirty-seven strains were found to be Gram-positive and 75 strains were Gram-negative. Seventy-nine strains were coccus-shaped, while 16 strains were rod-shaped. On the basis of the results of the comparative analyses of 16S rDNA gene sequences, the 112 isolated bacteria were divided into 5 major groups: Alphaproteobacteria (39%), Gammaproteobacteria (22%), Actinobacteria (14%), Fimicutes (9%), and Bacteroidetes (6%). It is strongly suggested that fifteen isolates are candidates for a new genera or species, based on the analyses of 16S rDNA gene sequences.

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