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Arthrobacter cryoconiti sp. nov., a psychrophilic bacterium isolated from alpine glacier cryoconite

2011; Microbiology Society; Volume: 62; Issue: 2 Linguagem: Inglês

10.1099/ijs.0.031138-0

1466-5034

Rosa Margesin, Peter Schümann, De-Chao Zhang, Mersiha Redzic, Yu‐Guang Zhou, Hong‐Can Liu, Franz Schinner,

RNA and protein synthesis mechanisms

A Gram-stain-positive, aerobic, non-motile, psychrophilic bacterium, designated strain Cr6-08 T , was isolated from alpine glacier cryoconite. Growth of strain Cr6-08 T occurred at 1–25 °C. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain Cr6-08 T is most closely related to members of the genus Arthrobacter . Strain Cr6-08 T possessed chemotaxonomic properties consistent with those of the genus Arthrobacter , such as peptidoglycan type A3α ( l -Lys– l -Ala 4 ), MK-9(H 2 ) as major menaquinone and anteiso- and iso-branched compounds (anteiso-C 15 : 0 and iso-C 15 : 0 ) as major cellular fatty acids. The polar lipid profile contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, one unknown glycolipid and three unknown polar lipids. The genomic DNA G+C content of strain Cr6-08 T was 57.3 mol%. On the basis of phenotypic and chemotaxonomic characteristics, phylogenetic analysis and DNA–DNA relatedness data, strain Cr6-08 T is considered to represent a novel species of the genus Arthrobacter , for which the name Arthrobacter cryoconiti sp. nov. is proposed. The type strain is Cr6-08 T ( = DSM 23324 T = LMG 26052 T = CGMCC 1.10698 T ).