Arcticibacter eurypsychrophilus sp. nov., isolated from ice core

Abstract

A Gram-stain-negative, rod-shaped, non-flagellated bacterium, strain MJ9-5T, was isolated from ice core of Muji Glacier. Colonies of strain MJ9-5T were pink, convex and round on R2A agar. Strain MJ9-5T grew between −1 to 25 °C with an optimum growth temperature of 10–15 °C. The strain tolerated 0–1.2 % (w/v) NaCl with an optimum of 1 %. The major cellular fatty acids of strain MJ9-5T were iso-C15 : 0, summed feature 3 (C16 : 1ω6c and/or C1 6 : 1ω7c). The G+C content of the genomic DNA was 38.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain MJ9-5T was related to members of the genus Arcticibacter . On the basis of the phenotypic characteristics and phylogenetic analysis, a novel species of this genus, Arcticibacter eurypsychrophilus sp. nov., is proposed. The type strain is MJ9-5T ( = KCTC 42008T = JCM 19862T).