Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Marine Prokaryotic Diversity of the Deep Sea Waters at the Depth of 1500 m Off the Coast of the Ulleung Island in the East Sea (Korea)

울릉도 연안 수심 1500 m에 서식하는 해양미생물군집의 분포

  • Kim, Mi-Kyung (Marine Science Research Center, Institute of Biotechnology, Yeungnam University) ;
  • Khang, Yongho (School of Biotechnology, Yeungnam University)
  • 김미경 (영남대학교 생명공학연구소 해양연구센터) ;
  • 강용호 (영남대학교 생명공학부)
  • Received : 2012.11.21
  • Accepted : 2012.12.26
  • Published : 2012.12.31
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Abstract

Microbial diversity in the 1500 m depth sea waters off the coast of Ulleung island of the East Sea, Korea, was investigated. Genomic DNAs were extracted directly from the marine microbes filtered through ultramembrane filters. Pyrosequencing of 16S rDNAs of these microbes resulted in 13,029 reads, of which uncultured bacteria consisted of 54.1%, alphaproteobacteria 23.4%, and gammaproteobacteria 22.3%. Other classes such as flavobacteria, actinobacteria, and epsilonproteobacteria were distributed within 0.2% of total reads. Among the cultivable bacteria, it was found that Rhodobacteraceae family of alphaproteobacteria, Alteromonadaceae, Halomonadaceae, and Piscirickettsiaceae families of gammaproteobacteria were mostly distributed in the deep-sea waters.

울릉도 연안의 심해(1500 m)에 서식하는 미생물의 다양성을 조사하였다. Ultramembrane filter를 사용하여 해양미생물을 여과한 다음 미생물군집 DNA를 정제하여 16S rDNA를 증폭하였다. Pyrosequencing 방법으로 염기서열을 분석한 결과 총 13,029 reads를 얻었으며, 이중에 54.1%가 uncultured bacteria, 23.4%가 alphaproteobacteria, 22.3%가 gammaproteobacteria이었고 flavobacteria, actinobacteria, epsilonproteobacteria 등이 0.2%이내에서 분포하고 있었다. 울릉도 지역의 해양심층수에서 배양이 가능한 것으로 알려진 미생물로서는 alphaproteobacteria의 Rhodobacteraceae과 (family), gammaproteobacteria의 Alteromonadaceae, Halomonadaceae, Piscirickettsiaceae과가 주로 분포하였다.

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