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 ω6c/16:1 ω7c), C_16:1ω5c 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.