During studies of the microbiota of human faeces, five strains of Gram-negative anaerobic rods were isolated following growth in a polyamine-deficient medium. These strains belonged to the genus on the basis of 16S rRNA gene sequence data. 16S rRNA gene sequence similarity between one of the strains, 341, and recognized species within the genus was <95 %. The DNA G+C content (44 mol%) and major fatty acid composition (anteiso-C, 32·0 %) supported the affiliation of strain 341 to the genus . Biochemical tests and DNA–DNA hybridization analysis demonstrated that strain 341 was distinct from and , to which it was related most closely. On the basis of these data, a novel species, sp. nov., is proposed with strain 341 (=JCM 13265=DSM 17393) as the type strain.


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vol. , part 1, pp. 151 - 154

API 20 A and API rapid ID 32 A test results.

Cellular fatty acid compositions of sp. nov., and .

DNA base composition and levels of DNA–DNA hybridization among the novel species and related strains.

[PDF file of Supplementary Tables S1-S3](29 KB)


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