Abstract
The apple rootstock Jork 9 was transformed using four different Agrobacterium rhizogenes virulent strains. The mannopine strain 8196 gave the best results in the production of chimeric plants compared to two agropine strains (A4 and 15834) and one cucumopine strain. Shoot regeneration was performed on both untransformed and transformed roots. Optimum combination and concentration of thidiazuron (TDZ) and α-naphtaleneacetic acid (NAA) was different between untransformed and transformed roots. From the transformed roots seven shoots were obtained and propagated as individual clones. All shoots from these clones rooted on a hormone-free medium contrary to untransformed shoots that did not root under similar culture conditions. Differences in the morphology of the leaves and stems were observed between the clones. The transformed status of the different clones was verified with mannopine tests, PCR and Southern blot analyses. Five clones contained the mas1', the ORF 13 and the rolB genes, whereas two clones contained only the rolB gene.
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Pawlicki-Jullian, N., Sedira, M. & Welander, M. The use of Agrobacterium rhizogenes transformed roots to obtain transgenic shoots of the apple rootstock Jork 9. Plant Cell, Tissue and Organ Culture 70, 163–171 (2002). https://doi.org/10.1023/A:1016387004712
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DOI: https://doi.org/10.1023/A:1016387004712