A micro-organism was isolated from soil which could grow on high concentrations [up to 350 p.p.m. (2.7 mM)] of 4-chlorophenol (4-CP). The isolate, designated strain A6T, was obtained from a soil suspension that had been selectively enriched with gradually increasing concentrations of 4-CP. Strain A6T could also grow on several other para-substituted phenols. Characterization of strain A6T with respect to chemical, biochemical and morphological properties, 16S rDNA sequencing and DNA-DNA hybridization indicated that the isolate is a novel species within the genus Arthrobacter for which the name Arthrobacter chlorophenolicus sp. nov. is proposed. The type strain is DSM 12829T.
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