Physical mapping of TOL plasmids pWWO and pND2 and various R plasmid-TOL derivatives from Pseudomonas spp

Analysis of several independently isolated R plasmid-TOL hybrids revealed a wide variation in the amount of TOL DNA they contain. If the formation of the various R plasmid-TOL hybrids involves transposition (which has yet to be rigorously assessed), such transposition does not involve a unique segment of TOL DNA.