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Abstract

A Gram-reaction-negative, rod-shaped, non-motile, red-pigmented, radiation-resistant, aerobic bacterium designated T-3 was isolated from a soil sample from the Qinghai–Tibet Plateau in Tibet, China, after exposure to 10 kGy gamma radiation. Phylogenetic analysis based on 16S rRNA sequences indicated that this isolate represented a novel member of the genus . Sequence identities of the 16S rRNA gene of strain T-3 with the type strains of species of the genus with validly published names range from 89 % to 97 %, and the most closely related species is Tibet-IIU11 (97 %). The DNA–DNA relatedness between strain T-3 and is 59.10 %. The major fatty acids of strain T-3 were iso-C (27.66 %), summed feature 4 (iso-CI and/or anteiso-CB, 15.84 %), anteiso-C (14.08 %) and summed feature 3 (Cω7 and/orCω6, 12.38 %). The major menaquinone of strain T-3 was MK-7. Phosphatidylethanolamine (PE) was predominant in the polar lipid profile. The G+C content of the DNA of strain T-3 was 69.17 mol%. On the basis of the results of the polyphasic characterization presented in this study, it is concluded that strain T-3 represents a novel species of the genus , for which the name is proposed. The type strain is T-3 ( = ACCC 05760 = KCTC 32407).

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2014-06-01
2019-12-13
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