Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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The Genetic Diversity of Bacterial Communities in the Groundwater

지하수 세균 군집의 유전적 다양성

  • Published : 2000.03.01
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Abstract

In order to characterize the genetic diversity of bacterial community in groundwater, samples were collected from used for drinking water and polluted with heavy metal wastewater in Seoul city and natural cave of Kangwondo. The DNA was amplified with 165 rDNA-based primers by use of the PCR, and then analysed ARDRA (amplified ribosomal DNA restriction analysis). Restriction endonuclease analysis patterns of amplified 165 rDNA in drinking water and wastewater relatively showed high genetic diversity in situ and drinking groundwater. The number of DNA fragments varied with in situ and drinking water. This method of ARDRA of bacterial communities in groundwater could be used for a quick assessment of genotypic changes between different locations reflecting different environmental conditions and the diversity reflected pollution of groundwater (natural cave water>drinking water>waste water, as in order of grade). [Genetic diversity, Groundwater, 165 rDNA, PCR, ARDRA].

서울시 소재 지하수 중 중금속으로 오염되어 음용수 이외의 생활 용수로 사용하고 있는 1개 정점과 음용수로 사용하고 있는 1개 정점, 대조군으로 강화도 천연 동굴의 1개 정점을 대상으로 실험을 실시하였다. 지하수 세균군집의 유전적 다양성의 변화를 보기 위해 지하수 세균 군집에서 16SrDNA를 증폭하는 primer로 PCR(polymerase chain reaction)을 실시한 후 ARDRA(amplified ribosomal DNA restriction analysis) 지문 분석으로 비교하였다. 16S rDNA를 증폭하여 제한효소 지문분석을 한 결과 in situ와 음용수에서 유전적 다양성이 상대적으로 크게 나타났다. 지하수 세균 군집의 ARDRA지문 분석은 상이한 환경과 서식지를 반영한 유전적 차이를 빠르게 비교 분석할 수 있었으며 지하수의 오염도에 따른 미생물의 다양성(천연 동굴>음용수>오염수)을 확인할 수 있었다.

Keywords

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