Abstract

Strain CCM 2783, previously classified as representing Arthrobacter aurescens, was subjected to a polyphasic taxonomic study. 16S rRNA gene sequence analysis and chemotaxonomic characteristics such as peptidoglycan type A3alpha Lys-Ala(2), major menaquinone MK-9(H(2)) and fatty acid composition confirmed assignment of the strain to the genus Arthrobacter. The results of phylogenetic analysis, DNA-DNA relatedness experiments and physiological and chemotaxonomic characteristics indicate that CCM 2783 differs from its nearest phylogenetic relative Arthrobacter psychrolactophilus and from other recognized Arthrobacter species. Therefore, a novel species, Arthrobacter stackebrandtii sp. nov., is proposed with the type strain CCM 2783(T) (=DSM 16005(T)).

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