Hymenobacter radiodurans sp. nov., isolated from soil in the Republic of Korea

A bacterial strain, designated 17J36-26 T , was isolated from the UV-irradiated soil from Jeju Island, South Korea. Cells are Gram negative, strictly aerobic, non-motile, non-spore forming, rod shaped, and catalase and oxidase positive. The major fatty acids of strain 17J36-26 T were summed feature 4 (17:1 iso I/17:1 anteiso B), summed feature 3 (16:1 ω 6 c /16:1 ω 7 c ), C 16:1 ω 5 c and iso-C 15:0 . The polar lipid profile contained phosphatidylethanolamine, unidentified aminophospholipid, phospholipids and four unidentified lipids. The G+C content of the strain 17J36-26 T was 62.6 mol%. The 16S rRNA gene sequence analysis showed that strain 17J36-26 T was phylogenetically related to Hymenobacter qilianensis DK6-37 T and Hymenobacter roseosalivarius AA718 T (97.5% and 96.8% sequence similarity, respectively). Strain 17J36-26 T showed resistance to UV radiation. Both average nucleotide identity (ANI) and in silico DNA–DNA hybridization (isDDH) values between strains 17J36-26 T and type strains of Hymenobacter species were lower than the cut-off (≥ 95–96% for ANI and ≥ 70% for isDDH) to define a bacterial new species. The polyphasic approach using genotypic, phenotypic and chemotaxonomic data showed that strain 17J36-26 T could be distinguished from its phylogenetically related species, and thus, the strain representative of a novel species within the genus Hymenobacter , for which the name Hymenobacter radiodurans sp. nov. (type strain 17J36-26 T = KCTC 62269 T = JCM 33185 T ) is proposed.