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Abstract

Strain 17bor-2, a gamma-resistant, pink-to-red-coloured, aerobic, catalase-positive, oxidase-negative and Gram-stain-negative bacterium, was isolated from gamma ray-irradiated soil. The isolate grew aerobically at 18–37 °C (optimum, 28–30 °C), pH 6.0–8.0 (pH 6.5–7.5) and in the presence of 0–1 % (w/v) NaCl (0 % NaCl). Phylogenetic analysis based on its 16S rRNA gene sequence indicated that strain 17bor-2 belonged to the genus Deinococcus with a highest sequence similarity of 96.4 % to Deinococcus alpinitundrae ME-04-04-52. The major fatty acids of the strain were summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c), C16 : 0 and cyclo C17 : 0. The only respiratory quinone was MK-8. The major polar lipids of the strain were phosphoglycolipid, aminophospholipid and an unknown glycolipid. The DNA G+C content of strain 17bor-2 was 62.8 mol%. On the basis of its phenotypic, genotypic and chemotaxonomic characteristics, strain 17bor-2 should be classified as a novel species in the genus Deinococcus , for which the name Deinococcus irradiatisoli sp. nov. is proposed. The type strain is 17bor-2 (=KCTC 33907=NBRC 113037).

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2018-08-21
2020-01-23
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