Abstract
A system for genetic transformation of an elite prickly pear cactus (Opuntia ficus-indica L., cultivar Villa Nueva) by Agrobacterium tumefaciens was developed. Beginning with direct bacterial infection by using a hypodermic syringe to the meristematic tissue termed areoles, transgenic plants were obtained by selection with 100 mg l−1 kanamycin. Transient and stable GUS activities were monitored on kanamycin-resistant shoots and regenerated plants, respectively. Genetic transformation of regenerated plants growing under selection was demonstrated by PCR and Southern blot analysis; transgene copy number in the genome of transgenic plants ranged from two to six, while the transformation frequency obtained by the system reported here was of 3.2%. This method may be useful for routine transformation and introduction of several important genes in prickly pear cactus.
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Acknowledgements
We thank Dr. J.L Cabrera-Ponce from CINVESTAV-IPN for technical help, and CONCYTEG, OMNILIFE, CONACYT, COSNET and DGETA-SEP, Mexico for financial support.
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Silos-Espino, H., Valdez-Ortiz, A., Rascón-Cruz, Q. et al. Genetic transformation of prickly-pear cactus (Opuntia ficus-indica) by Agrobacterium tumefaciens . Plant Cell Tiss Organ Cult 86, 397–403 (2006). https://doi.org/10.1007/s11240-006-9123-1
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DOI: https://doi.org/10.1007/s11240-006-9123-1