Dyadobacter tibetensis sp. nov., isolated from glacial ice core
2013
Shen, Liang | Liu, Yongqin | Yao, Tandong | Wang, Ninglian | Xu, Baiqing | Jiao, Nianzhi | Liu, Hongcan | Zhou, Yuguang | Liu, Xiaobo | Wang, Yanan
A Gram-stain-negative, rod-shaped, aerobic, non-motile bacterium, designated Y620-1T, was isolated from a glacier on the Tibetan Plateau, China. The 16S rRNA gene sequence of the novel isolate shared 93.6–95.1 % similarity with type strains of species of the genus Dyadobacter. The major fatty acids of strain Y620-1T were summed feature 3 (C16 : 1ω7c and/or iso-C15 : 0 2-OH), iso-C15 : 0, C16 : 1ω5c and iso-C17 : 0 3-OH. The predominant isoprenoid quinone and polar lipid were MK-7 and phosphatidylethanolamine (PE), respectively. The DNA G+C content was 44.4±0.3 mol% (Tm). Flexirubin-type pigment was produced. The novel isolate was classified in the genus Dyadobacter, but a number of phenotypic characteristics distinguished the novel isolate from type strains of species of the genus Dyadobacter. From these genotypic and phenotypic data, it is evident that strain Y620-1T represents a novel species of the genus Dyadobacter, for which the name Dyadobacter tibetensis sp. nov. is proposed. The type strain is Y620-1T ( = JCM 18589T = CGMCC 1.12215T).
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