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. 1982 May;79(10):3193-7.
doi: 10.1073/pnas.79.10.3193.

Tumor induction by Agrobacterium rhizogenes involves the transfer of plasmid DNA to the plant genome

F F White  1 , G Ghidossi, M P Gordon, E W Nester
Affiliations

Tumor induction by Agrobacterium rhizogenes involves the transfer of plasmid DNA to the plant genome

F F White et al. Proc Natl Acad Sci U S A. 1982 May.

Abstract

The DNA from tumors of Nicotiana glauca initiated by strains of Agrobacterium rhizogenes was shown to contain sequences that are homologous to the root-inducing (Ri) plasmid of the bacterium. Two independently established tumor lines contained a similar portion of the Ri-plasmid. The Ri-plasmid also hybridized to DNA fragments from uninfected N. glauca. A cosmid clone of the Ri-plasmid encompassing the region containing the Ri-plasmid sequences that are stably transferred to the plant also hybridized to the Ri-plasmid-related fragments found in uninfected plants. Five of six tumor lines tested produced a tumor-specific compound that is similar to agropine.

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