1887

Abstract

A bacterial strain isolated from human faeces, M-165, was characterized in terms of its phenotypic and biochemical features, cellular fatty acid profile, menaquinone profile and phylogenetic position (based on 16S rRNA gene sequence analysis). A 16S rRNA gene sequence analysis showed that the isolate was a member of the genus . Strain M-165 was closely related to strains, showing 98 % sequence similarity. The strain was obligately anaerobic, non-pigmented, non-spore-forming, non-motile, Gram-negative, rod-shaped and was able to grow on media containing 20 % bile. Although the phenotypic characteristics of the strain M-165 were similar to those of , the isolate could be differentiated from by means of API 20A tests for -arabinose and -rhamnose fermentation. DNA–DNA hybridization experiments revealed the genomic distinctiveness of the novel strain with respect to JCM 9497 (⩽60 % DNA–DNA relatedness). The DNA G+C content of the strain is 47.6 mol%. On the basis of these data, strain M-165 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is M-165 (=JCM 13406=DSM 18315).

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2007-02-01
2021-03-07
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