sp. nov. a novel actinobacterium isolated from soil.

A novel actinobacterium, designated strain NEAU-D13, was isolated from soil collected from Aohan Banner, Chifeng, Inner Mongolia Autonomous Region, China and characterized using a polyphasic approach. On the basis of 16S rRNA gene sequence analysis, strain NEAU-D13 belonged to the genus and shared the highest sequence similarity with JCM 14913 (99.17 %). Morphological and chemotaxonomic characteristics of the strain also supported its assignment to the genus . Cell walls contained -diaminopimelic acid as the diagnostic diamino acid and the whole-cell sugars were ribose and mannose. The phospholipid profile contained diphosphatidylglycerol, phosphatidylethanolamine, hydroxyphosphatidylethanolamine and phosphatidylinositol. The menaquinone was only MK-9(H). The major fatty acids were -C, C, -C, -C and -C. DNA G+C content was 68.71 mol%. Phylogenetic analysis using the 16S rRNA gene sequences showed that the strain formed a stable clade with JCM 14913 in the genus . Meanwhile, a combination of digital DNA-DNA hybridization results and some phenotypic characteristics demonstrated that strain NEAU-D13 could be distinguished from its closely related strain. Therefore, it is concluded that strain NEAU-D13 represents a novel species of the genus , for which the name sp. nov. is proposed, with NEAU-D13 (=CCTCC AA 2019089=JCM 33970) as the type strain.