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Saccharopolyspora halophila sp. nov., a novel halophilic actinomycete isolated from a saline lake in China

¹ The Key Laboratory for Microbial Resources of the Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, PR China
² Xinjiang Institute of Microbiology, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, PR China

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

A halophilic actinomycete strain, designated YIM 90500^T, was isolated from a saline lake in Xinjiang province, north-west China and subjected to a polyphasic taxonomic study. Good growth of the novel isolate occurred at 28–37 °C, pH 7–8 and with 10–15 % (w/v) NaCl; no growth occurred without any salts. Strain YIM 90500^T contained meso-diaminopimelic acid with glucose, arabinose and ribose as the whole-cell sugars. The major phospholipids were phosphatidylcholine and diphosphatidylglycerol. MK-9(H₄) was the predominant menaquinone. The major fatty acids were iso-C_{15 : 0}, iso-C_{16 : 0} and anteiso-C_{17 : 0}. The chemotaxonomic data together with the morphological properties of strain YIM 90500^T consistently assigned the strain as belonging to the genus Saccharopolyspora. Phylogenetic analysis based on 16S rRNA gene sequences further revealed that strain YIM 90500^T formed a distinct phyletic lineage in the genus Saccharopolyspora and showed low 16S rRNA gene similarities (<96.4 %) with other species of the genus. On the basis of the evidence from the polyphasic study, a novel species, Saccharopolyspora halophila sp. nov., is proposed. The type strain is YIM 90500^T (=DSM 45007^T=KCTC 19162^T).

A scanning electron micrograph of spore chains of strain YIM 90500^T is available as supplementary material with the online version of this paper.

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