Journal of Microbiology

  • 제43권1호
  • /
  • Pages.1-10
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  • 2005
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  • 1225-8873(pISSN)
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  • 1976-3794(eISSN)
한국미생물학회 (The Microbiological Society of Korea)
권호 표지

The Diversity of Culturable Organotrophic Bacteria from Local Solar Salterns

  • Yeon, Sun-Hee (Department of Microbiology, Hannam University) ;
  • Jeong, Won-Jin (Korea Research Institute of Bioscience and Biotechnology (KRIBB)) ;
  • Park, Jin-Sook (Department of Microbiology, Hannam University)
  • 발행 : 2005.02.28
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초록

We isolated and cultured bacteria inhabiting solar saltern ponds in Taean-Gun, Chungnam Province, Korea. All of the isolated 64 strains were found to be moderately halophilic bacteria, growing in a salt range of 2-20 %, with an optimal concentration of 5% salt. Bacterial diversity among the isolated halophiles was evaluated via RFLP analyses of PCR-amplified 16S rDNAs, followed by phylogenetic analysis of the partial 16S rDNA sequences. The combination of restriction enzyme digestions with HaeIII, CfoI, MspI and RsaI generated 54 distinct patterns. A neighbor-joining tree of the partial 16S rDNA sequences resulted in the division of the 64 strains into 2 major groups, 45 strains of ${\gamma}-Proteobacteria$ (70.3%) and 19 strains of Firmicutes (29.7%). The ${\alpha}-Proteobacteria$ and Cytophaga-Flavobacterium-Bacterioides groups, which were repeatedly found to exist in thalassohaline environments, were not represented in our isolates. The ${\gamma}-Proteobacteria$ group consisted of several subgroups of the Vibrionaceae (37.5%), Pseudoalteromonadaceae (10.9%), Halomonadaceae (7.8%), Alteromonadaceae (7.8%), and Idiomarinaceae (6.3%). Members of Salinivibrio costicola (29.7%) were the most predominant species among all of the isolates, followed by Halobacillus treperi (12.5%). Additionally, three new species candidates were found, based on similarities of the 16S rDNA sequences to those of previously published species.

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