Summary
Three avirulent Tn7 insertion mutants mapping in the vir E region of the Agrobacterium tumefaciens plasmid pTiB6S3 regain virulence by co-infection with several wildtype strains and with a number of strains carrying mutations in other regions of the Ti plasmid. This finding indicates that during tumour induction normal Agrobacterium strains produce a diffusable factor required for transformation and might allow the isolation of such a factor.
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References
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Communicated by R. Goldberg
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Otten, L., De Greve, H., Leemans, J. et al. Restoration of virulence of Vir region mutants of Agrobacterium tumefaciens strain B6S3 by coinfection with normal and mutant Agrobacterium strains. Mol Gen Genet 195, 159–163 (1984). https://doi.org/10.1007/BF00332739
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DOI: https://doi.org/10.1007/BF00332739