1887

Abstract

A non-motile, rod-shaped, yellow bacterium, designated C16y, was isolated from alpine glacier cryoconite. Cells behaved Gram-positively, were aerobic and psychrophilic (good growth at 1–25 °C). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain C16y was related to the genus and had highest 16S rRNA gene sequence similarity with JCM 12082 (97.6 %) and DSM 1805 (97.2 %). DNA–DNA hybridization demonstrated that strain C16y could not be considered as a member of either or . Strain C16y contained Q-10 as the predominant ubiquinone and C and C were the dominant fatty acids. The polar lipid profile contained phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, sphingoglycolipid, five unidentified glycolipids, two unidentified aminophospholipids and two unidentified lipids. The major polyamines were the triamines homospermidine and spermidine. The G+C content was 67.9 mol%. Combined data from phenotypic, phylogenetic and DNA–DNA relatedness studies demonstrated that strain C16y is a representative of a novel species of the genus , for which we propose the name sp. nov. The type strain is C16y (=DSM 22294 =CGMCC 1.8957 =CIP 110131).

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2011-03-01
2021-05-17
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