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Actinopolymorpha rutila sp. nov., isolated from a forest soil

¹ The Key Laboratory for Microbial Resources of the Ministry of Education, PR China, and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
² Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
³ Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, PR China

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn
or
liact{at}hotmail.com

A Gram-positive, aerobic actinomycete, designated strain YIM 45725^T, was isolated from a forest soil sample in Yunnan Province, China. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the isolate was a member of the family Nocardioidaceae and was related most closely to Actinopolymorpha singaporensis IM 7744^T (99.4 % 16S rRNA gene sequence similarity). Chemotaxonomic data, including cell-wall components, menaquinones and polar lipids, supported the affiliation of strain YIM 45725^T to the genus Actinopolymorpha. The results of physiological and biochemical investigations and DNA–DNA hybridization experiments demonstrated that strain YIM 45725^T differed from the single recognized species of the genus Actinopolymorpha. Strain YIM 45725^T is therefore considered to represent a novel species of the genus Actinopolymorpha, for which the name Actinopolymorpha rutila sp. nov. is proposed. The type strain is YIM 45725^T (=CCTCC AA 206004^T=DSM 18448^T).

Scanning electron and light micrographs of cells of strain YIM 45725^T and a phylogenetic tree based on a comparative 16S rRNA gene sequence analysis, showing the relationships between strain YIM 45725^T and related taxa, are available with the online version of this paper.

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