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Five novel species of the genus Nocardiopsis isolated from hypersaline soils and emended description of Nocardiopsis salina Li et al. 2004

¹ Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan, 650091, PR China
² DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Mascheroder Weg 1b, D-38124 Braunschweig, Germany
³ Science College, Honghe University, MengZi, Yunnan, 661100, PR China
⁴ Korea Research Institute of Bioscience and Biotechnology. Daejeon 305-333, Korea

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn
Chang-Jin Kim
changjin{at}kribb.re.kr

Five novel Nocardiopsis strains isolated from hypersaline soils in China were subjected to a polyphasic analysis to determine their taxonomic position. All of the novel isolates could grow on agar plates at NaCl concentrations of up to 18 % (w/v), with optimum growth at 5–8 %. The DNA G+C contents of the novel strains ranged from 67.9 to 73.2 mol%. The morphological and chemotaxonomic characteristics of the isolates matched those described for members of the genus Nocardiopsis. Based on their 16S rRNA gene sequence analysis, DNA–DNA hybridization values and phenotypic characteristics, including the composition of cell-wall amino acids and sugars, menaquinones, polar lipids and cellular fatty acids, the isolates are proposed as representing five novel species of the genus Nocardiopsis. The novel species are proposed as Nocardiopsis gilva sp. nov. [type strain YIM 90087^T (=KCTC 19006^T=CCTCC AA 2040012^T=DSM 44841^T)], Nocardiopsis rosea sp. nov. [type strain YIM 90094^T (=KCTC 19007^T=CCTCC AA 2040013^T=DSM 44842^T), Nocardiopsis rhodophaea sp. nov. [type strain YIM 90096^T (=KCTC 19049^T=CCTCC AA 2040014^T=DSM 44843^T), Nocardiopsis chromatogenes sp. nov. [type strain YIM 90109^T (=KCTC 19008^T=CCTCC AA 2040015^T=DSM 44844^T) and Nocardiopsis baichengensis sp. nov. [type strain YIM 90130^T (=KCTC 19009^T=CCTCC AA 2040016^T=DSM 44845^T). On the basis of the chemotaxonomic data, the description of the recently described species Nocardiopsis salina Li et al. 2004 is emended.

Scanning electron micrographs of the five novel strains and tables detailing their polar lipid profiles, menaquinone patterns, fatty acid contents and DNA–DNA relatedness are available as supplementary material in IJSEM Online.

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