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Chromohalobacter salarius sp. nov., a moderately halophilic bacterium isolated from a solar saltern in Cabo de Gata, Almería, southern Spain

¹ Department of Microbiology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja s/n, 18071 Granada, Spain
² Microbiology Laboratories, Imperial College London, Wye Campus, Wye, Ashford, Kent TN25 5AH, UK

Correspondence
Mercedes Monteoliva-Sánchez
mmonteol{at}ugr.es

A moderately halophilic, Gram-negative bacterium (strain CG4.1^T), which was isolated from a solar saltern at Cabo de Gata, a wildlife reserve located in the province of Almería, southern Spain, was subjected to a polyphasic taxonomic study. This organism was an aerobic, motile rod that produced colonies with a yellow pigment. Strain CG4.1^T grew at salinities of 3–25 % (w/v), at 15–45 °C and at pH 5–9. The organism reduced nitrate, hydrolysed starch and had phenylalanine deaminase activity. The major fatty acids were C_{18 : 1}7c, C_{16 : 0} and C_{19 : 0} cyclo 8c. The DNA G+C content was 63.6 mol%. On the basis of phenotypic and phylogenetic data, strain CG4.1^T appears to be a member of the genus Chromohalobacter and clustered closely with Chromohalobacter species, with 95–96 % similarity between their 16S rRNA gene sequences. However, DNA–DNA relatedness between the isolate and the type strains of Chromohalobacter species was low. Therefore, it is proposed that strain CG4.1^T represents a novel species, Chromohalobacter salarius sp. nov. The type strain is strain CG4.1^T (=CECT 5903^T=LMG 23626^T).

A phylogenetic tree based on the maximum-parsimony algorithm showing relationships between strain CG4.1^T, Chromohalobacter species and other related taxa is available as supplementary material with the online version of this paper.