Characterization of several Psychrobacter strains isolated from Antarctic environments and description of Psychrobacter luti sp. nov. and Psychrobacter fozii sp. nov.

Eleven psychrophilic bacteria isolated from Antarctic coastal marine environments were subjected to a polyphasic taxonomic study. The isolates were oxidase-positive, halotolerant, gram-negative, non-motile coccobacilli with a strictly oxidative metabolism. The DNA G + C content ranged from 44 to 47 mol%.

Shewanella frigidimarina and Shewanella livingstonensis sp. nov. isolated from Antarctic coastal areas.

Three strains of psychrophilic bacteria isolated from Antarctic coastal marine environments were studied to determine their taxonomic position. These bacteria were gram-negative rods, facultatively anaerobic and motile by means of a single polar flagellum. None of the bacterial isolates had an Na+ requirement.