생명과학회지 (Journal of Life Science)

  • 제21권11호
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  • Pages.1511-1517
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  • 2011
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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Sphingobacterium sp. SW-09에 의한 토양환경에서의 다환 방향족탄화수소인 페난스렌의 분해

Sphingobacterium sp. SW-09 Effectively Degrades Phenanthrene, a Polycyclic Aromatic Hydrocarbon, in a Soil Microcosm

  • Son, Seung-Woo (Suzhou Singapore International School) ;
  • Chang, Hey-Won (Dongducheon Forgein Language High School) ;
  • Kim, Sung-Kuk (Department of Life Science, College of Natural Science, Daejin University) ;
  • Chang, Jong-Soo (Department of Life Science, College of Natural Science, Daejin University)
  • 투고 : 2011.09.22
  • 심사 : 2011.11.16
  • 발행 : 2011.11.30
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초록

페난스렌은 다환방향족 탄화수소의 일종으로서 미량으로도 인체에 강한 해를 미칠 수 있는 주요 환경오염 물질이다. 미생물을 이용한 페난스렌 제거 목적으로 중국 쑤저우(Suzhou) 지역의 유류 오염토양에서 페난스렌을 강력하게 분해하는 세균을 분리하였다. 16S rDNA 염기서열 결정에 의하여 이 세균은 Sphingobacterium sp. SW-09로 동정되었으며 PCR 증폭을 통하여 페난스렌 분해 유전자인 nahH를 가지고 있음이 확인되었다. 이전의 연구에서 포천일대의 군부대에서 분리된 강력한 페난스렌 분해세균인 Staphylococcus sp. KW-07과 이번에 분리된 Sphingobacterium sp. SW-09을 이용하여 이들의 페난스렌 분해능을 비교분석하였다. 그 결과, 쑤저우 지역에서 분리된 Sphingobacterium sp. SW-09이 최소배지와 실제토양에서 모두 Staphylococcus sp. KW-07보다 강하게 페난스렌을 분해하는 것으로 나타났다. 결과적으로 이번에 분리된 Sphingobacterium sp. SW-09을 사용하여 유류 오염토양의 환경정화에 사용할 수 있을 것으로 판단된다.

We isolated a potent phenanthrene-degrading bacterium from oil-contaminated soils of Suzhou, China, and assessed the potential use of these bacteria for bioremediation of soils contaminated by polycyclic aromatic hydrocarbons (PAHs) in a microcosm. Based on 16S rDNA sequencing, we identified this bacteria as Sphigobacterium sp. SW-09. By PCR amplification, we also identified catechol 2,3-dioxygenase genes (nahH genes) mediating PAH degradation. Staphylococcus sp. KW-07, which has been identified in our previous study, showed potential for use in bioremediation of oil-contaminated soils. In this experiment, we compared the rate of phenanthrene-degradation between Staphylococcus sp. KW-07 and Sphingobacterium sp. SW-09 in a microcosm condition. Newly isolated Sphingobacterium sp. SW-09 showed a higher phenanthrene-degradation rate than that of Staphylococcus sp. KW-07 in soil microcosms. Together, our results suggest that the Sphingobacterim sp. SW-09 strain isolated from the Suzhou area may also be useful in bioremediation of PAH-contaminated soils.

키워드

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피인용 문헌

  1. From oil spills to barley growth - oil-degrading soil bacteria and their promoting effects vol.56, pp.11, 2016, https://doi.org/10.1002/jobm.201600300