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Abstract

Strain MJ31, a Gram-reaction-positive, aerobic, rod-shaped, non-motile bacterium, was isolated from a sludge sample collected at the Daejeon sewage-disposal plant, in South Korea, and characterized in order to determine its taxonomic position. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain MJ31 belonged to the genus , appearing most closely related to KSL-104 (98.6 % sequence similarity), DSM 20641 (97.6 %), MDN22 (97.2 %) and MSL-22 (97.0 %). The chemotaxonomic properties of strain MJ31 were consistent with those of the genus : MK-8(H) was the predominant menaquinone, iso-C, iso-C and Cω9 were the predominant cellular fatty acids, and the cell-wall peptidoglycan was based on -2,6-diaminopimelic acid. The genomic DNA G+C content of strain MJ31 was 71.2 mol%. Some differential phenotypic properties and low DNA–DNA relatedness values (<28 %) with the type strains of closely related species indicated that strain MJ31 represents a novel species, for which the name sp. nov. is proposed. The type strain is MJ31 ( = KCTC 19772 = JCM 16922).

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2012-05-01
2019-12-15
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