The taxonomic status of a soil isolate, provisionally assigned to the genus Nocardia, was established following a polyphasic study. An almost complete sequence of the 16S rDNA of the strain was determined and aligned with available sequences for nocardiae and phylogenetic trees were inferred using four tree-making algorithms. The organism was associated consistently with the type strains of Nocardia brasiliensis and Nocardia farcinica in the neighbour-joining analysis, albeit with low bootstrap values. It was also found to have chemotaxonomic and morphological properties consistent with its assignment to the genus Nocardia. The organism was readily separated from representatives of other Nocardia species by a broad range of phenotypic properties. The name proposed for the novel species is Nocardia beijingensis sp. nov. The type strain is AS4.1521T (= IFO 16342T = JCM 10666T).


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