1887

Abstract

A moderately thermophilic aerobic bacterium, strain 25-4, was isolated from a hot spring at Baekdoo Mountain in Korea. The cells were Gram-negative, motile rods each having a polar flagellum. Analysis of the 16S rRNA gene sequence indicated that the strain represented a new lineage within the family ‘’ of the ‘’, being most closely related to the genera , , , , and and having 16S rRNA gene sequence similarities to the most related species of the genera of between 92·9 and 94·4 %. The strain contained Q-8 as the major isoprenoid quinone and had a fatty acid profile with predominant iso-branched fatty acids. Growth occurred at pH 6·0–10, with an optimum at pH 9·0, and at 25–53 °C, with an optimum at 47 °C. The G+C content of the genomic DNA was 50·7 mol%. On the basis of phylogenetic analyses and its phenotypic characteristics, strain 25-4 belongs to a new genus, gen. nov., within the ‘’. The sole species of this genus is sp. nov. (type strain, 25-4=DSM 16282=KCTC 12236).

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2005-01-01
2021-10-20
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