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Salinicoccus luteus sp. nov., isolated from a desert soil

¹ Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
² Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, PR China

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

A moderately halophilic bacterium, strain YIM 70202^T, was isolated from a desert soil sample collected from Egypt and was subjected to a taxonomic investigation. In a phylogenetic dendrogram based on 16S rRNA gene sequence analysis, strain YIM 70202^T was affiliated to the Salinicoccus clade, showing 94.5–96.8 % 16S rRNA gene sequence similarity to the recognized species of the genus Salinicoccus, in which Salinicoccus roseus CCM 3516^T was the nearest neighbour. The DNA–DNA relatedness value of the novel isolate with S. roseus CCM 3516^T was 12.7 %. The novel isolate grew at temperatures between 4 and 45 °C and at pH values ranging from 7.0 to 11.0, with an optimum of 30 °C and pH 8.0–9.0, respectively. Strain YIM 70202^T grew optimally in the presence of 10 % NaCl (w/v) and growth was observed at NaCl concentrations in the range 1–25 % (w/v). Chemotaxonomic data revealed that strain YIM 70202^T contained MK-6 as the predominant respiratory quinone, possessed L-Lys–Gly₅ as the cell-wall peptidoglycan, had phosphatidylglycerol, diphosphatidylglycerol and an unknown glycolipid as the polar lipids and contained i-C_{15 : 0} and ai-C_{15 : 0} as the predominant fatty acids. The DNA G+C content was 49.7 mol%. The biochemical and chemotaxonomic properties demonstrate that strain YIM 70202^T represents a novel species of the genus Salinicoccus. The name Salinicoccus luteus sp. nov. is proposed with strain YIM 70202^T (=CGMCC 1.6511^T=KCTC 3941^T) as the type strain.

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