Transfer of the symbiotic plasmid from Rhizobium leguminosarum biovar trifolii to Agrobacterium tumefaciens.


This study examined the symbiotic properties of Agrobacterium transconjugants isolated by transferring a Tn5-mob-marked derivative of the 315 kb megaplasmid pRt4Sa from Rhizobium leguminosarum bv. trifolii 4S (wild-type strain) to Agrobacterium tumefaciens A136 as the recipient. The genetic characteristics of the AT4S transconjugant strains were ascertained… (More)


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