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Leifsonia bigeumensis sp. nov., isolated from soil on Bigeum Island, Korea

Functional Metabolomics Research Center, KRIBB, Daejeon 305-806, Republic of Korea

Correspondence
Chang-Jin Kim
changjin{at}kribb.re.kr

A Gram-positive, motile, mesophilic bacterium that formed yellowish-white, circular, convex, glistening colonies, strain MSL-27^T, was isolated from a soil sample from Bigeum Island, Korea, and its taxonomic position was investigated by a polyphasic approach. Cells of strain MSL-27^T are non-spore-forming, irregular rods, usually fragmenting into shorter rods or coccoid elements. The growth temperature and pH ranges are 20–37 °C and pH 6.0–12.0, with optimum growth at 28 °C and pH 8.0. MK-11 is the major menaquinone and DL-2,4-diaminobutyric acid is found in the cell-wall peptidoglycan. The major fatty acids are i-C_{16 : 0} (39 %), ai-C_{15 : 0} (36 %), ai-C_{17 : 0} (18 %) and i-C_{15 : 0} (2 %). The G+C content is 69.0 mol%. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain MSL-27^T should be placed in the genus Leifsonia. Levels of similarity between the 16S rRNA gene sequence of strain MSL-27^T and those of the type strains of the other members of the genus Leifsonia ranged from 95.8 to 96.7 %. Based on phenotypic characteristics, biochemical properties and chemotaxonomic features, strain MSL-27^T (=KCTC 19268^T =DSM 19322^T) represents the type strain of a novel species of Leifsonia, for which the name Leifsonia bigeumensis sp. nov. is proposed.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain MSL-27^T is EF466124.

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