Hymenobacter frigidus sp. nov., isolated from a glacier ice core

Zhengquan Gu; Yongqin Liu; Baiqing Xu; Ninglian Wang; Nianzhi Jiao; Liang Shen; Hongcan Liu; Yuguang Zhou; Xiaobo Liu; Jiule Li; Jia Sun

doi:10.1099/ijsem.0.002262

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Hymenobacter frigidus sp. nov., isolated from a glacier ice core

Zhengquan Gu^1,2, Yongqin Liu^1,2,3,4, Baiqing Xu^3,4, Ninglian Wang^3,5, Nianzhi Jiao⁶, Liang Shen⁴, Hongcan Liu⁷, Yuguang Zhou⁷, Xiaobo Liu¹, Jiule Li⁴ and Jia Sun⁶
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Affiliations: ¹ Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, PR China ² University of Chinese Academy of Sciences, Beijing 100049, PR China ³ CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100085, PR China ⁴ Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, PR China ⁵ College of Urban and Environmental Science, Northwest University, Xi’an 710069, PR China ⁶ State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, PR China ⁷ Institute of Microbiology, China General Microbiological Culture Collection Center, Chinese Academy of Sciences, Beijing 100101, PR China
*Correspondence: Yongqin Liu, [email protected]
Published: 01 October 2017 https://doi.org/10.1099/ijsem.0.002262

Abstract

A psychrophilic, Gram-stain-negative, rod-shaped, red-pigmented bacterium, designated strain B1789T, was isolated from an ice core of Muztagh Glacier on the Tibetan Plateau in China. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain B1789T was related to members of the genus Hymenobacter and had highest sequence similarity with Hymenobacter antarcticus JCM 17217T (97.9 %). The major menaquinone was MK-7 and the major polar lipid was phosphatidylethanolamine. The predominant fatty acids were iso-C15 : 0, anteiso-C15 : 0 and summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c). The DNA G+C content was 59.4 mol%. In DNA–DNA hybridization tests, strain B1789T shared 42 % relatedness with H. antarcticus JCM 17217T. Based on the results of phenotypic and chemotaxonomic tests, strain B1789T was considered as representing a novel species of the genus Hymenobacter , for which the name Hymenobacter frigidus sp. nov. is proposed. The type strain is B1789T (=JCM 30595T=CGMCC 1.14966T).

Received: 21/03/2017
Accepted: 31/07/2017
Published Online: 01/10/2017

Keyword(s): Bacteroidetes , Hymenobacter , ice core and novel species

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Hymenobacter frigidus sp. nov., isolated from a glacier ice core

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Hymenobacter frigidus sp. nov., isolated from a glacier ice core

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