Nitrincola tibetensis sp. nov., isolated from Lake XuguoCo on the Tibetan Plateau
Phurbu, Dorji and Pema, Yangzom and Ma, Chao and Lu, Huibin and Li, Huabing and Tian, Yanling and Xing, Peng,, 69, 123-128 (2019),
doi = https://doi.org/10.1099/ijsem.0.003111,
publicationName = Microbiology Society,
issn = 1466-5026,
abstract= A novel Gram-stain-negative, motile and rod-shaped bacterium, designated xg18T, was isolated from Lake XuguoCo on the Tibetan Plateau. The strain was able to grow optimally at 0–2 % NaCl and tolerate up to 6 % NaCl. Growth occurred at pH 7.0–11.0 (optimum, pH 9.0–10.0) and 15–40 °C (optimum, 37 °C). Vitamins were not required for growth. The major polar lipids of strain xg18T were phosphatidyl ethanolamine and phosphatidylglycerol. The predominant respiratory quinone was Q-8. The major fatty acids were summed feature 8 (C18 : 1ω6c and/or C18 : 1ω7c), summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c) and C16 : 0. The G+C content of genomic DNA was 46.1 mol%. Analysis of 16S rRNA sequences showed that strain xg18T belongs to the genus Nitrincola , with Nitrincola alkalisediminis MEB087T (KC822363, 98.6 %) as its closest neighbour. The DNA–DNA relatedness value of strain xg18T with its closest phylogenetic neighbour, N. alkalisediminis JCM 19317T, was 43.1±3.2 %. Strain xg18T was clearly distinguishable from the type strain of the genus Nitrincola through phylogenetic analysis, fatty acid composition data and a range of physiological and biochemical characteristics comparisons. Based on its phenotypic and chemotaxonomic characteristics, strain xg18T could be classified as a representative of a novel species of the genus for which the name Nitrincola tibetensis sp. nov. is proposed. The type strain is xg18T (=CICC 24457T=KCTC 62401T).,
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