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1 School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China
2 State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
3 School of Biology, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK
Correspondence
Zhiheng Liu
zhliu{at}sun.im.ac.cn
The taxonomic position of a soil isolate, strain 276T, was established using a polyphasic approach. The organism showed a range of chemical and morphological properties consistent with its classification in the genus Nocardia. An almost complete 16S rRNA gene sequence determined for the strain was aligned with corresponding sequences of representatives of the genus Nocardia and related taxa using three tree-making algorithms. The organism formed a distinct phyletic line within the evolutionary radiation occupied by the genus Nocardia and was most closely related to the type strain of Nocardia abscessus. However, the two strains shared a low DNADNA relatedness value and were readily distinguished using a combination of phenotypic properties. The combined genotypic and phenotypic data show that strain 276T should be assigned to the genus Nocardia as a novel species. The name proposed for this new taxon is Nocardia xishanensis sp. nov. The type strain is 276T (=CGMCC 4.1860T=JCM 12160T).
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