Abstract

A Gram-positive, aerobic, non-motile bacterium designated F3-P9T, was isolated from dye waste water in Korea and was characterized using a polyphasic taxonomic approach. Comparative 16S rRNA gene sequence analysis showed that strain F3-P9T belongs to genus Leucobacter. The 16S rRNA gene sequence similarities
among strain F3-P9T and validated representatives of the genus Leucobacter ranged from 95.9-97.4%. Strain F3-P9T exhibited DNA-DNA relatedness values below 48% with respect to Leucobacter species. The G+C content of the genomic DNA was 67.5 mol%. F3-P9T contained MK-11 as the major respiratory quinone. The major fatty acids were anteiso-C15:0 (48.5%), anteiso-C17:0 (22.7%), and iso-C16:0 (14.5%). The peptidoglycan was composed of L-2,4-diaminbutyric acid, alanine, glycine, and glutamic acid. The polar lipid profile showed a major amount of diphosphatidylglycerol (DPG), a moderate amount of phosphatidylglycerol (PG), and two unknown glycolipids. On the basis of its phenotypic and genotypic properties and its phylogenetic distinctiveness, strain F3-P9T (KEMC 211-128T =KACC 16572T =JCM 17539T) should be classified in the genus Leucobacter as the type strain of a novel species, for which the name Leucobacter kyeonggiensis sp. nov. is proposed.

• Keywords: Taxonomy; 16S rRNA gene; Microbacteriaceae; Leucobacter kyeonggiensis