Hymenobacter rutilus sp. nov., isolated from marine sediment in the Arctic

Strain K2-33028T, which appeared as a brick-red colony on an R2A plate, was isolated from a marine sediment sample from Kings Bay, Svalbard Archipelago, Norway. Phylogenetic analysis based on 16S rRNA gene sequences indicated that K2-33028T represented a member of the genus Hymenobacter. Cells were Gram-reaction-negative, non-spore-forming, aerobic, rod-shaped and without motility. Growth occurred at 4-37 °C (optimum 28 °C) and at pH 6.0-8.0 (optimum pH 7.0). Cells contained menaquinone-7 as the main respiratory quinone and iso-C15 : 0, summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c), C16 : 1ω5c, summed feature 4 (comprising anteiso-C17 : 1B and/or iso-C17 : 1I) and anteiso-C15 : 0 as the major cellular fatty acids. Phosphatidylethanolamine was predominant in the polar lipid profile. The DNA G+C content was 64.3 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain K2-33028T is considered to represent a novel species of the genus Hymenobacter, for which the name Hymenobacterrutilussp. nov. is proposed. The type strain is K2-33028T (=CCTCC AB 2016091T=KCTC 52447T).