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Transfer of Arthrobacter picolinophilus Tate and Ensign 1974 to Rhodococcus erythropolis

DSM-Deutsche Sammlung von Mikroorganismen und Zellkuturen GmbH, D-38124 Braunschweig, Germany

^* Corresponding author. Mailing address: DSM-Deutsche Sammlung von Mikroorganismen und Zellkuhuren GmbH, Mascheroder Weg 1B, D-38124 Braunschweig, Germany. Phone: 49-531-2616-352. Fax: 49-531-2616-418. Electronic mail address: stackebrandt{at}venus.gbf-braunschweig.d400.de.

ABSTRACT

The type strain of Arthrobacter picolinophilus, strain DSM 20665 (= ATCC 27854), was found to be so closely related to strains of Rhodococcus erythropolis that we propose that this misclassified taxon should be removed from the genus Arthrobacter and reclassified as a strain of R. erythropolis. Our conclusion is based on the results of a comparative analysis of the chemotaxonomic properties of the organism, including the amino acid composition of the peptidoglycan, the mycolic acid composition, and the fatty acid composition, the very similar physiological properties and 16S ribosomal DNA sequences, and the results of DNA-DNA reassociation experiments performed by the renaturation rate method.