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Chromohalobacter nigrandesensis sp. nov., a moderately halophilic, Gram-negative bacterium isolated from Lake Tebenquiche on the Atacama Saltern, Chile

¹ Department of Microbiology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja s/n, 18071 Granada, Spain
² Laboratory of Microbiology, ‘Universidad Técnica Federico Santa María, Sede Viña del Mar’, Viña del Mar, Chile
³ Department of Medical Technology, ‘Facultad de Ciencias de la Salud, Universidad de Antofagasta’, Av. Jaime Guzmán s/n, Antofagasta, Chile
⁴ Laboratory of Environmental Microbiology, Catholic University of Valparaiso, Valparaíso, Chile

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

A total of 52 strains of moderately halophilic bacteria isolated from hypersaline sediment of Lake Tebenquiche on the Atacama Saltern, Chile, were subjected to a taxonomic study. The morphological, physiological, biochemical and nutritional characteristics of the strains matched those described for the genus Chromohalobacter. Cells were Gram-negative, non-spore-forming, rod-shaped and motile. A black pigmentation was produced. One strain, designated LTS-4N^T, grew optimally at 32 °C. Growth occurred in media containing 0·5–25 % (w/v) total salts; the optimum was 7·5 % (w/v) total salts. The pH range for growth was 5–10. The G+C content of the DNA of strain LTS-4N^T was 59·8 mol%. Analysis of 16S rRNA gene sequence similarity revealed that strain LTS-4N^T was closely related to Chromohalobacter species; however, DNA–DNA hybridization of representative strain LTS-4N^T failed to associate the strain with any species of the genus Chromohalobacter with validly published names. Therefore, the name Chromohalobacter nigrandesensis sp. nov. is proposed. The type strain is LTS-4N^T (=CECT 5315^T=DSM 14323^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain LTS-4N^T is AJ277205.

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