Abstract
Eight different derivatives of R plasmid RP1 with thermosensitive mutations affecting maintenance in Escherichia coli and Pseudomonas aeruginosa were introduce into Rhizobium meliloti. None of the plasmids showed a thermosensitive character in R. meliloti. On the other hand, a certain deletion mutation in RP1 was found to cause plasmid instability in rhizobia and agrobacteria, but not in E. coli.
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Selected References
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