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Abstract

A strictly aerobic Gram-stain-negative bacterium, designated strain KER25-10, was isolated from a laboratory air conditioning system in South Korea. Cells were yellow-pigmented, non-motile rods showing catalase- and oxidase-positive reactions. The strain grew at pH 4.0–9.0 (optimum, pH 6.0–7.0) and 10–40 °C (optimum, 30 °C) and in the presence of 0–3 % (w/v) NaCl (optimum, 0 %). The G+C content of the genomic DNA was 65.1 mol%. Strain KER25-10 contained ubiquinone-10 (Q-10) as the predominant isoprenoid quinone and C, Cω6, summed feature 3 (comprising C 7 and/or C 6) and summed feature 8 (comprising C 7 and/or C 6) as the major fatty acids. The major polar lipids were sphingoglycolipid, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine. Only spermidine was detected as the polyamine. Phylogenetic analysis based on 16S rRNA sequences indicated that strain KER25-10 formed a distinct phylogenetic lineage within the genus of the family and the strain was most closely related to THG-DT81 with a 96.8 % 16S rRNA gene sequence similarity. On the basis of phenotypic, chemotaxonomic and molecular features, strain KER25-10 clearly represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is KER25-10 (=KACC 19285=JCM 32053).

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2017-10-01
2024-03-29
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