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KMID : 1234420100380030263
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Korean Journal of Microbiololgy and Biotechnology
2010 Volume.38 No. 3 p.263 ~ p.272
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Bacterial Diversity and Distribution of Cultivable Bacteria Isolated from Dokdo Island
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Sung Hye-Ri
Kim Sa-Youl
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Abstract
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One hundred sixty three strains showing different colony morphological characteristics on different concentration of marine agar (MA) plates were isolated from ambient seawater near Dokdo island. Bacterial diversity and distributions were studied by phylogenetic analysis of the partial 16S rRNA gene sequences. One hundred sixty three strains were partially sequenced and analyzed phylogenetically. They were composed of 5 phyla, of which gamma-proteobacteria (58%), alpha-proteobacteria (20%), bacteriodetes (16%) were predominant. They were affiliated with 90 species. The 16S rRNA sequence similarity of the isolates was in 93.3 to 100 % range to reported sequence data. Thirty six isolates of among them were assumed to be novel species candidates based on similarity analysis of the 16S rRNA gene sequences. Overall, Proteobacteria and Bacteriodetes of the Dokdo coastal sea water showed a high diversity.
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KEYWORD
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Dokdo, sea water, bacterial diversity, proteobacteria, bacteriodetes
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