Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Bacterial Community Diversity Associated with Two Marine Sponges from the South Pacific Ocean based on 16S rDNA-DGGE analysis

남태평양에 서식하는 두 종의 해면 Hyrtios sp.와 Callyspongia sp.의 공생세균 군집의 다양성

  • Received : 2010.09.10
  • Accepted : 2010.09.28
  • Published : 2010.09.30
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Abstract

The bacterial community structure associated with two marine sponges, Hyrtios sp. 604 and Callyspongia sp. 612 collected from the South Pacific Ocean were analyzed by 16S rDNA-denaturing gradient gel electrophoresis (DGGE). The phylogenetic analysis showed that the bacterial community associated with Hyrtios sp. 604 contained diverse bacterial groups such as Chloroflexi, Firmicutes, Cyanobacteria, Alphaproteobacteria, Gammaproteobacteria, Actinobacteria, and Acidobacteria. Callyspongia sp. 612 harbored Chloroflexi, Cyanobacteria, Alphaproteobacteria, and Gammaproteobacteria. Hyrtios sp. 604 belonging to genus Hyrtios known to produce natural products showed greater bacterial diversity than Callyspongia sp. 612. Phylum Actinobacteria was shown to be one of dominant bacterial groups in Hyrtios sp. 604. Although the same phyla of bacteria were found in both sponge species, the spongeassociated predominant bacterial groups differed between the two sponges with different chemical characteristics from the same geographical location. Uncultured bacteria represented over 90% of the bacteria diversity present in all bacterial communities of the sponges.

남태평양에 서식하는 두 종의 해면 Hyrtios sp. 604와 Callyspongia sp. 612로부터 16S rDNA DGGE 방법을 이용하여 공생세균 군집의 다양성을 분석하였다. DGGE band로부터 염기서열 분석 결과, Hytrios sp. 604의 공생세균은 Alphaproteobacteria, Gammaproteobacteria, Acidobacteria, Actinobacteria, Chloroflexi, Cyanobacteria, Firmicutes로 나타났으며, Callyspongia sp. 612의 공생세균 그룹은 Alphaproteobacteria, Gammaproteobacteria, Chloroflexi, Cyanobacteria로 나타났다. 풍부한 이차대사산물의 생산자로 보고된 Hyrtios 해면 속의 Hyrtios sp. 604는 Callyspongia sp. 612에 비해 더 다양한 공생세균 군집을 나타내었으며 주요 공생세균 군집으로 Actionobacteria가 포함되었다. 동일 지역에 서식하나 화학적 특성이 다른 두 해면 종의 세균 군집은 서로 다른 것으로 나타났다. 발견된 공생세균의 염기서열은 90% 이상이 uncultured clone들과 높은 상동성을 나타내었다.

Keywords

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