Degradation of pyridine by one Rhodococcus strain in the presence of chromium (VI) or phenol

► A Rhodococcus strain could use pyridine as the sole carbon and nitrogen source. ► It could degrade pyridine at low concentrations of phenol and Cr (VI). ► Phenol at low concentration could stimulate the strain to degrade pyridine. ► It is the first Rhodococcus strain reported to have these abilities.