Roseivivax sediminis sp nov., a moderately halophilic bacterium isolated from salt mine sediment

文献类型： 外文期刊

第一作者： Xiao, Wei

作者： Xiao, Wei;Wang, Yong-Xia;Liu, Ji-Hui;Wang, Zhi-Gang;Ji, Kai-Yan;Lai, Yong-Hong;Wen, Meng-Liang;Cui, Xiao-Long;Xiao, Wei;Wang, Yong-Xia;Liu, Ji-Hui;Wang, Zhi-Gang;Ji, Kai-Yan;Lai, Yong-Hong;Wen, Meng-Liang;Cui, Xiao-Long;Zhang, Xiao-Xia

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期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.747； 五年影响因子：2.889 ）

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收录情况： SCI

摘要： A Gram-negative, facultatively anaerobic, short rod-shaped, heterotrophic bacterium, designated strain YIM D21T, was isolated from a salt mine in Yunnan province, south-west China. Strain YIM D21T formed cream–yellow colonies, was non-motile and moderately halophilic, and tolerated NaCl concentrations of 1–15% (w/v), with optimum growth at 5–10% (w/v). Growth occurred at 15–42 °C (optimum 28 °C) and at pH 6.5–8.5 (optimum 7.5–8.0). The respiratory quinone was ubiquinone-10 (Q-10). The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, three unidentified phospholipids, one unidentified aminolipid and two unidentified lipids. The major fatty acids were C18:1ω7c and cyclo C19:0ω8c and the DNA G+C content was 67.7 mol%. Phylogenetic analyses revealed that strain YIM D21T belongs to the genus Roseivivax. 16S rRNA gene sequence similarities of YIM D21T were 95.7, 95.0 and 94.8% with the type strains of Roseivivax halodurans, Roseivivax lentus and Roseivivax halotolerans, respectively. Physiological and biochemical tests allowed phenotypic differentiation of strain YIM D21T from closely related species with validly published names. We therefore propose that this isolate represents a novel species, Roseivivax sediminis sp. nov.; the type strain is YIM D21T (KCTC 23444T=ACCC 10710T).

分类号： Q

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