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Salinicoccus kunmingensis sp. nov., a moderately halophilic bacterium isolated from a salt mine in Yunnan, south-west China

¹ Yunnan Institute of Microbiology and Key Laboratory for Conservation and Utilization of Bio-resources, Yunnan University, Kunming, Yunnan 650091, PR China
² College of Bio-resources and Environmental Science, Jishou University, Jishou, Hunan 416000, PR China
³ DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7b, D-38124 Braunschweig, Germany
⁴ Yunnan Salt & Chemical Industry Co., Ltd, Kunming, Yunnan 650091, PR China

Correspondence
Xiao-Long Cui
xlcui{at}ynu.edu.cn
or
xlcuiynu{at}yahoo.com.cn

A novel yellow-pigmented, non-motile, non-sporulating, catalase- and oxidase-positive, obligately aerobic, moderately halophilic, facultatively alkaliphilic Gram-positive coccus, strain YIM Y15^T, was isolated from a brine sample from a salt mine in Yunnan, south-west China. Strain YIM Y15^T grew in the presence of 0.5–25 % (w/v) NaCl and at pH 6.0–10.0, with optimum growth at 8–10 % (w/v) NaCl and pH 8.0. It grew at 4–45 °C, with optimum growth at 37.0 °C. The major cellular fatty acids were anteiso-C_{15 : 0} and iso-C_{15 : 0}. Menaquinone 6 (MK-6) was the major respiratory quinone. The cell wall contained Lys and Gly. The DNA G+C content was 46.2 mol%. Phylogenetic analyses based on 16S rRNA gene sequence comparisons revealed that strain YIM Y15^T was a member of the genus Salinicoccus, with low 16S rRNA gene sequence similarity to the type strains of the five described species of the genus, Salinicoccus alkaliphilus JCM 11311^T (sequence similarity 96.0 %), Salinicoccus roseus DSM 5351^T (94.9 %), Salinicoccus jeotgali KCTC 13030^T (94.8 %), Salinicoccus salsiraiae LMG 22840^T (94.8 %) and Salinicoccus hispanicus DSM 5352^T (94.7 %). Together with the phenotypic differences, these results supported the proposal of a novel species of the genus Salinicoccus, Salinicoccus kunmingensis sp. nov., with YIM Y15^T (=DSM 17847^T =CGMCC 1.6302^T) as the type strain.

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