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Int J Syst Evol Microbiol 55 (2005), 1133-1137; DOI  10.1099/ijs.0.63390-0
© 2005 International Union of Microbiological Societies

Rhodococcus yunnanensis sp. nov., a mesophilic actinobacterium isolated from forest soil

Yu-Qin Zhang1,{dagger}, Wen-Jun Li1,{dagger}, Reiner M. Kroppenstedt2, Chang-Jin Kim3, Guo-Zhong Chen1, Dong-Jin Park3, Li-Hua Xu1 and Cheng-Lin Jiang1

1 The Key Laboratory for Microbial Resources of Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, P. R. China
2 DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Mascheroder Weg 1b, D-38124 Braunschweig, Germany
3 Korea Research Institute of Bioscience and Biotechnology, 52 Oeundong, Yusong, Daejeon 305-333, Republic of Korea

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn or
lihxu{at}ynu.edu.cn

A Gram-positive, aerobic, non-motile, mesophilic strain, designated YIM 70056T, was isolated from a forest soil sample in Yunnan Province, China. Phylogenetic analysis based on 16S rRNA gene sequences revealed that this isolate had less than 97·0 % similarity to any Rhodococcus species with validly published names, with the exception of Rhodococcus fascians (DSM 20669T), which was found to be its closest neighbour (98·9 % similarity). Chemotaxonomic data, including peptidoglycan type, diagnostic sugar compositions, fatty acid profiles, menaquinones, polar lipids and mycolic acids, were determined for this isolate; the results supported the affiliation of strain YIM 70056T to the genus Rhodococcus. The DNA G+C content was 63·5 mol%. The results of DNA–DNA hybridization with R. fascians DSM 20669T, in combination with chemotaxonomic and physiological data, demonstrated that isolate YIM 70056T represents a novel Rhodococcus species, for which the name Rhodococcus yunnanensis sp. nov. is proposed, with YIM 70056T (=CCTCC AA 204007T=KCTC 19021T=DSM 44837T) as the type strain.

Published online ahead of print on 16 December 2004 as DOI 10.1099/ijs.0.63390-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 70056T is AY602219.

An extended phylogenetic tree showing the phylogenetic relationships between strain YIM 70056T and related strains is available as a supplementary figure in IJSEM Online.

{dagger}These authors contributed equally to this work.




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J.-L. Xu, J. He, Z.-C. Wang, K. Wang, W.-J. Li, S.-K. Tang, and S.-P. Li
Rhodococcus qingshengii sp. nov., a carbendazim-degrading bacterium
Int J Syst Evol Microbiol, December 1, 2007; 57(12): 2754 - 2757.
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