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Updated: Aug 7, 2026

Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians
Published on: June 17, 2025
Salinicoccus salsiraiae sp. nov.: a new moderately halophilic gram-positive bacterium isolated from salted skate
Luís França1, Fred A Rainey, M Fernanda Nobre
1Departamento de Bioquímica, Centro de Neurociências e Biologia Celular, Universidade de Coimbra, 3001-401 Coimbra, Portugal.
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 RH1(T) 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 RH1(T) 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-Gly(5-6) type. On the basis of the phylogenetic analyses, physiological and biochemical characteristics, we suggest that strain RH1(T) (=LMG 22840 = CIP 108576) represents a new species of the genus Salinicoccus, for which we propose the name Salinicoccus salsiraiae.
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