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Halomonas salifodinae sp. nov., a halophilic bacterium isolated from a salt mine in China

¹ College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
² Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
³ Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China
⁴ Institute of Life Sciences and the Moshe Shilo Minerva Center for Marine Biogeochemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

Correspondence
Min Wu
wumin{at}zju.edu.cn

A Gram-negative, aerobic, motile, halophilic bacterium, designated strain BC7^T, was isolated from a salt mine in north-western China and was subjected to a polyphasic taxonomic characterization. The isolate was able to grow in the presence of 0.5–20 % (w/v) NaCl and at pH 6.0–9.0 and 4–48 °C; optimum growth was observed with 3 % (w/v) NaCl and at pH 7.0 and 30 °C. Cells were long rods, 0.8–1.2 µm wide and 4.0–6.0 µm long. The major fatty acids were C_{18 : 1}7c, C_{16 : 0} and C_{16 : 0}7c. The DNA G+C content was 65.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain BC7^T belonged to the genus Halomonas and showed highest sequence similarity to the type strain of Halomonas pacifica (99.2 %). Levels of DNA–DNA relatedness between strain BC7^T and H. pacifica CGMCC 1.2314^T and Halomonas taeanensis DSM 16463^T were 51 and 38 %, respectively. On the basis of phenotypic and genotypic data, strain BC7^T is considered to represent a novel species of the genus Halomonas, for which the name Halomonas salifodinae sp. nov. is proposed. The type strain is BC7^T (=CGMCC 1.6774^T =JCM 14803^T).

Micrographs of cells of strain BC7^T, an extended neighbour-joining phylogenetic tree based on 16S rRNA gene sequences and detailed fatty acid compositions of strain BC7^T and H. pacifica CGMCC 1.2314^T are available as supplementary material with the online version of this paper.

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