Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Molecular Systematic Study of Bacterial Community Associated with Sand Dune Plants

사구식물 연관 세균 군집의 분자계통학적 연구

  • Do, Jin-Ok (Department of Microbiology and Biotechnology, Daejeon University) ;
  • Park, Seong-Joo (Department of Microbiology and Biotechnology, Daejeon University) ;
  • Kim, Seung-Bum (Department of Microbiology, Chungnam National University)
  • 도진옥 (대전대학교 산업과학대학 미생물생명공학과) ;
  • 박성주 (대전대학교 산업과학대학 미생물생명공학과) ;
  • 김승범 (충남대학교 생명과학부 미생물학)
  • Published : 2007.11.30
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Abstract

The rhizobacterial diversity associated with 9 native plant species inhabiting coastal sand dunes in Tae-an area, Chungnam Province, was studied using the denaturing gradient gel electrophoresis (DGGE) fingerprinting analysis over three times from October 2003 to March 2004. One dominant band commonly occurred in all of the rhizosphere samples, which was identified as that of Lysobacter enzymogenes. The other common bands included those derived from species of Pseudomonas and Bacillus. It was notable that L. enzymogenes was dominant in all of the 9 plant species and such dominance was consistent throughout the whole sampling period, which confirms the previous study by Lee et al. (2006a). The Bacillus bands were detected in all of the three samplings, and those of Pseudomonas were notable in the samples of December 2003. By the DGGE analysis alone, the significance of Lysobacter to the sand dune plants is not clear. However, considering their presence in healthy plants and the dominance in all plant species, Lysobacter may have positive roles in the survival or growth of the plants in sand dune area.

충남 태안군 일대 4곳의 해안사구 지역에서 자생하는 9종의 사구식물 연관 근권세균 다양성을 2003년 10월부터 2004년 3월까지의 기간 동안 3차례에 걸쳐 denaturing gradient gel electrophoresis (DGGE) 기법을 이용하여 조사하였다. 그 결과 한 밴드가 계속 모든 시료에서 우점하는 것으로 나타났으며, DNA 염기서열 분석에 의하여 Lysobacter enzymogenes와 가장 유사한 것으로 나타났다. 기타 주요 밴드들은 Pseudomonas와 Bacillus 속의 균주들로 동정되었다. L. enzymogenes가 9종의 식물 모두에서 지역이나 조사시기에 관계없이 우점적으로 나타난 것은 이전의 클론 분석을 통한 결과와 일치한다 (Lee et al. 2006a). Bacillus에 속한 밴드들이 모든 조사에서 출현하였으며, Pseudomonas 속 밴드들은 2003년 12월 조사에서 두드러졌다. DGGE 분석만으로는 Lysobacter가 사구식물에 가지는 중요성을 파악할 수는 없으나 건강한 개체에 지속적으로 발견되는 것으로 보아 Lysobacter의 존재는 식물에 긍정적인 영향을 가지는 것으로 사료된다.

Keywords

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