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Background  Salinivibrios are moderately halophilic bacteria found in salted meats, brines and hypersaline environments. We obtained three novel conspecific  Salinivibrio  strains closely related to  S. costicola,  from Socompa Lake, a high altitude hypersaline Andean lake (approx. 3,570 meters above the sea level).    Results  The three novel  Salinivibrio  spp. were extremely resistant to arsenic (up to 200 mM HAsO4 2− ), NaCl (up to 15%), and UV-B radiation (19 KJ/m 2 , corresponding to 240 minutes of exposure) by means of phenotypic tests. Our subsequent draft genome ionsequencing and RAST-based genome annotation revealed the presence of genes related to arsenic, NaCl, and UV radiation resistance. The three novel  Salinivibrio  genomes also had the xanthorhodopsin gene cluster phylogenetically related to  Marinobacter  and  Spiribacter . The genomic taxonomy analysis, including multilocus sequence analysis, average amino acid identity, and genome-to-genome distance revealed that the three novel strains belong to a new  Salinivibrio  species.    Conclusions  Arsenic resistance genes, genes involved in DNA repair, resistance to extreme environmental conditions and the possible light-based energy production, may represent important attributes of the novel salinivibrios, allowing these microbes to thrive in the Socompa Lake.    Electronic supplementary material  The online version of this article (doi:10.1186/1471-2164-15-473) contains supplementary material, which is available to authorized users.

Genomic and phenotypic attributes of novel salinivibrios from stromatolites, sediment and water from a high altitude lake