Three strains of anaerobic Gram-negative bacilli isolated from human oral sites were subjected to a comprehensive range of phenotypic and genotypic tests and were found to comprise a homogeneous group. 16S rRNA gene sequence analysis revealed the strains to constitute a novel group within the genus , most closely related to and . A novel species, sp. nov., is proposed to accommodate these strains. is saccharolytic and produces acetic and succinic acids as end products of fermentation. The G+C content of the DNA of the type strain is 48 mol%. The type strain of is W1609 (=DSM 19339 =CCUG 54766).


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vol. , part 12, pp. 2936 - 2939

Characteristics of sp. nov.

FAME data for strains of sp. nov. in comparison with previously published analyses of fatty acid compositions in species.

Extended phylogenetic tree based on 16S rRNA gene sequence comparisons over 1411 aligned bases showing the relationship between the two sequences obtained from sp. nov. W1609 (variants A and B) and related species.

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