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. 1976 Sep;127(3):1331–1336. doi: 10.1128/jb.127.3.1331-1336.1976

Conjugation in Agrobacterium tumefaciens in the absence of plant tissue.

R A Levin, S K Farrand, M P Gordon, E W Nester
PMCID: PMC232928  PMID: 783141

Abstract

A general, reliable conjugation system for Agrobacterium tumefaciens in the absence of plant tissue is described in which A. tumefaciens can serve either as the donor or recipient of plasmid deoxyribonucleic acid with reasonable efficiency. Plasmid RP4 was transferred from Escherichia coli to A. tumefaciens and from strain of A. tumefaciens. Both RP4 and the A. tumefaciens virulence-associated plasmids were detected by alkaline sucrose gradients in A. tumefaciens strains A6 and C58 after mating with E. coli J53(RP4). The pathogenicity (tumor foramtion) of strains A6 and C58 and the sensitivity of strain C58 to bacteriocin 84 were unaffected by the acquistion of RP4 by the Agrobacterium strains. Plasmid R1drd-19 was not transferred to A. tumefaciens. Transformation experiments with plasmid deoxyribonucleic acid were unsuccessful, even though, in the case of RP4, conjugation studies showed taht the deoxyribonucleic acid was compatible with that of the recipient strains.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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