R Factor Transfer in Rhizobium leguminosarum (original) (raw)

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Abstract

SUMMARY: R factors of the compatibility class P were transferred between strains of Escherichia coli k12 and Rhizobium leguminosarum. These R factors were stable in R. leguminosarum and conferred similar levels of antibiotic resistance to those in the corresponding R+ E. coli k12 hosts, with the exception of carbenicillin resistance which was greatly reduced. Transfer between R. leguminosarum strains was by conjugation and was stimulated by conditions favouring spheroplast formation. R factor mediated recombination could not be demonstrated.

• Received: 19/04/1974
• Published Online:01/09/1974

© Society for General Microbiology, 1974

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1974-09-01

2025-02-12

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