KMID : 1234420090370030189
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Korean Journal of Microbiololgy and Biotechnology 2009 Volume.37 No. 3 p.189 ~ p.196
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Jeon Sun-Ae
Sung Hye-Ri Park You-Mie Park Jae-Hong Kim Sa-Youl
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Abstract
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Bacteria were isolated from roots of plants belonging to family Solanaceae and Gramineae, inhabited in Dokdo island. Fifty six endospore-forming bacteria grown on tryptic soy broth (TSB) agar medium and 23 nitrogen-fixing bacteria (NFB) grown on nitrogen free agar medium were isolated, respectively. The isolates were partially identified by analyzing the 16S rDNA and categorized into phylogenetic groups. The 16S rDNA sequences of each identified isolates were compared with sequences of each type strains to analyze phylogenetic relationship by phylogenetic tree. As a result, endospore-forming
bacteria and nitrogen-fixing bacteria were classified into 4 and 6 lineage groups, respectively. Among these isolated, 18 were presumed to be novel species candidates based on the similarity (lower than 98%) analysis of the 16S rDNA sequences.
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KEYWORD
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Dokdo, rhizosphere, endospore-forming bacteria, nitrogen-fixing bacteria, 16S rDNA
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