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Int J Syst Evol Microbiol 58 (2008), 1542-1546; DOI  10.1099/ijs.0.65090-0
© 2008 International Union of Microbiological Societies

Nocardiopsis valliformis sp. nov., an alkaliphilic actinomycete isolated from alkali lake soil in China

Runlei Yang, Li-Ping Zhang, Li-Ge Guo, Nan Shi, Zhitang Lu and Xiumin Zhang

College of Life Sciences, HeBei University, The Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Baoding 071002, PR China

Correspondence
Li-Ping Zhang
zhlping{at}mail.hbu.edu.cn

A strain (HBUM 20028T) isolated from alkali lake soil in China was studied by a polyphasic taxonomic approach. The strain produced abundant aerial and substrate mycelia. Long spore chains were borne on the aerial mycelium, and the substrate mycelium was often arranged in a shape like a fence or palisade. The special characteristic of strain HBUM 20028T was its abundant growth under alkaline conditions, at pH 8.0–14.0. The cell wall of strain HBUM 20028T contained meso-diaminopimelic acid but no diagnostic sugar. Major phospholipids included diphosphatidylglycerol and phosphatidylcholine. The major menaquinones were MK-10(H2), MK-10(H4) and MK-10(H6). The major cellular fatty acids were iso-C16 : 0 (31.66 %), anteiso-C17 : 0 (14.85 %) and C18 : 1{omega}9c (14.73 %). All of these characters consistently indicated that strain HBUM 20028T belongs to the genus Nocardiopsis. DNA–DNA hybridization between the strain and type strains of related species gave relatedness values far below 70 %. Based on 16S rRNA gene sequence analysis, DNA relatedness and phenotypic characteristics, a novel species with the name Nocardiopsis valliformis sp. nov. is proposed. The type strain is HBUM 20028T (=DSM 45023T =CGMCC 4.2135T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain HBUM 20028T is AY336503.






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