DNA homology studies on Nocardia and Rhodococcus strains

The genetic homogeneity of Nocardia amarae, Nocardia autotrophica and Rhodococcus strains and the relationship among these groups of microorganisms have been studied using the DNA reassociation method. Strains belonging to N. amarae and N. autotrophica form genetically homogeneous groups. Distinct differences have been found out among Rhodococcus strains.