The cointegration rate into the aspen and birch genomes of foreign genes from a binary vector and a disarmed Ti plasmid pCBE21 carried by the same Agrobacterium tumefaciens strain was studied. The cotransformation rate for the genes within the Ti plasmid varied from 30 to 100%; while the transformation rate for the gene from TL region was twofold higher as compared with the TR region. On the average, the gene transfer from all three T-DNAs was recorded in 10.9% of the transgenic lines. For the vector pBI121, the cotransformation rates for the genes from both regions of pCBE21 T-DNA were higher as compared with the vector pGS. In addition, a concurrent transfer of the genes from the Ti plasmid TL and TR regions was recorded only after the transformation with the vector pBI121. These results can be used for constructing woody plants containing several genes.
Russian Journal of Genetics – Springer Journals
Published: Nov 17, 2010
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