Carnobacterium inhibens sp nov., isolated from the intestine of Atlantic salmon (Salmo salar)

Strain K1(T), isolated from the gastrointestinal tract of Atlantic salmon ( Salmo salar), has the capacity to inhibit the growth of the fish pathogens Vibrio anguillarum and Aeromonas salmonicida. Strain K1(T) is a motile Gram -positive psychrophilic rod that lacks both catalase and oxidase, which doe s not grow on acetate containing media, but grows at pH 9 and in TSB with u p to 6% sodium chloride content. Strain K1(T) is facultatively anaerobic an d tryptone as a sole source of nutrient promotes growth. The most abundant cellular fatty acid of strain K1(T) is oleic acid (18:1cis9). Based on 16S rDNA sequence comparisons, it is suggested that strain K1(T) is phylogeneti cally closely related to C. alterfunditum. However, the unique phenotypic a ttributes of strain K1(T) suggest that it represents a new species. The nam e Carnobacterium inhibens is proposed, for which the type strain is K1(T)(= CCUG 31728(T)).