Abstract
A novel, yellow, aerobic strain, YIM 101168T, isolated from the faeces of a dove (Columba livia), was studied to determine its taxonomic position. Cells were Gram-stain-positive, short rod-shaped, oxidase-negative, catalase-positive and non-motile. The strain could grow at 7-37 °C, at pH 6-10 and in the presence of 0-13 % (w/v) NaCl. The strain had a 16S rRNA gene sequence similarity and DNA-DNA hybridization relatedness value with Microbacteriumgubbeenense NCIMB 30129T of 97.8 % and 41.5±8.7 %, respectively. Ornithine was detected as the diagnostic amino acid in the hydrolysate of the cell wall. Whole-cell sugars were found to be galactose, glucose, rhamnose, mannose and ribose. Major fatty acids (>10 %) were iso-C16 : 0, anteiso-C15 : 0 and anteiso-C17 : 0. Major menaquinones were identified as MK-10, MK-11 and MK-12. The polar lipids included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, glycolipids and four unidentified lipids. The phylogenetic analyses as well as the chemotaxonomic and phenotypic characteristics indicate that strain YIM 101168T represents a novel species of the genus Microbacterium; the name Microbacterium faecale sp. nov. is proposed for the novel species and the type strain is YIM 101168T (=DSM 27232T=KCTC 39554T=CGMCC 1.15152T).
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