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Arthrobacter psychrophenolicus sp. nov., isolated from an alpine ice cave

¹ Institut für Mikrobiologie, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
² DSMZ – Deutsche Sammlung für Mikroorganismen und Zellkulturen GmbH, Mascheroder Weg 1b, D-38124 Braunschweig, Germany
³ Laboratory of Microbial Ecology, UMR 5557, University Claude Bernard Lyon 1, F-69622 Villeurbanne-Cedex, France

Correspondence
Rosa Margesin
rosa.margesin{at}uibk.ac.at

On the basis of phenotypic, genotypic and chemotaxonomic characteristics, a novel species belonging to the genus Arthrobacter is described. A facultatively psychrophilic bacterium, strain AG31^T, was isolated from an alpine ice cave. The aerobic, Gram-positive, non-spore-forming, non-motile strain exhibited a rod–coccus growth cycle and produced a yellow pigment. Good growth and phenol biodegradation occurred at a temperature range of 1–25 °C. Up to 10 mM phenol was utilized as a sole carbon source. Glucose was not assimilated. Analysis of the 16S rRNA gene revealed that strain AG31^T represents a distinct lineage within the genus Arthrobacter, being most closely related to Arthrobacter sulfureus. The level of DNA–DNA relatedness to the type strain of A. sulfureus was 29·9 %. Anteiso-C_{15 : 0} was the predominant fatty acid (72 %). Strain AG31^T exhibited A4 L-lys–L-Glu-type peptidoglycan and contained glucose as the only cell-wall sugar. MK-10 was the predominant menaquinone, and the polar lipid pattern consisted of phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol and an unidentified glycolipid. Strain AG31^T (=DSM 15454^T=LMG 21914^T) is assigned as the type strain of a novel Arthrobacter species, Arthrobacter psychrophenolicus sp. nov.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain AG31^T is AJ616763.

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