Abstract
Two moderately halophilic low G + C Gram-positive bacteria were isolated from a sample of salted skate (Class Chondrychthyes, Genus Raja). Phylogenetic analysis of the 16S rRNA gene sequence of strains RH1T and RH4 showed that these organisms represented a novel species of the genus Salinicoccus. The new isolates formed pink–red colonies and flocculated in liquid media, with optimum growth in media containing 4% NaCl and pH of about 8.0. These organisms are aerobic but reduce nitrate to nitrite under anaerobic conditions. Acid is produced from several carbohydrates. Oxidase and catalase were detected. Menaquinone 6 was the major respiratory quinone. The major fatty acids of strains RH1T and RH4 were 15:0 anteiso and 15:0 iso. The G + C contents of DNA were 46.2 and 46.0 mol%, respectively. The peptidoglycan was of A3alpha L-Lys-Gly5–6 type. On the basis of the phylogenetic analyses, physiological and biochemical characteristics, we suggest that strain RH1T (=LMG 22840 = CIP 108576) represents a new species of the genus Salinicoccus, for which we propose the name Salinicoccus salsiraiae.
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Acknowledgments
We are indebted to Prof. J. Euzéby (École National Vétérinaire, Toulouse, France) for the etymology of the new organism’s name. We thank Dr Peter Schumann (DSMZ, Germany) for the peptidoglycan analysis.
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Communicated by G. Antranikian
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França, L., Rainey, F.A., Nobre, M.F. et al. Salinicoccus salsiraiae sp. nov.: a new moderately halophilic gram-positive bacterium isolated from salted skate. Extremophiles 10, 531–536 (2006). https://doi.org/10.1007/s00792-006-0532-1
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DOI: https://doi.org/10.1007/s00792-006-0532-1