The taxonomic position of a Gram-positive, non-motile, non-spore-forming coryneform, isolated from activated sludge and designated strain CAU 212, was investigated using a polyphasic approach. Cellular morphology, biochemical tests and chemotaxonomic investigations revealed that strain CAU 212 had the characteristics of the genus . Comparative 16S rRNA gene sequence analysis showed that the organism formed a hitherto-unknown subline within the genus . Sequence divergence values of more than 4.3 % from recognized species, together with phenotypic differences, showed that the bacterium represents a previously unrecognized member of the genus , for which the name sp. nov. is proposed. The type strain is CAU 212 (=KCTC 19568=CCUG 57284).


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