Abstract
The method for genetic transformation of maize (Zea mays L.) via embryogenic callus infection with Agrobacterium tumefaciens was developed. Calli were co-cultivated with the overnight culture of A. tumefaciens strain LBA4404 harboring the pBI121 plasmid with the nptII and uidA genes. Thereafter, the sensitivity of calli and regenerated plantlets to kanamycin (Km) was determined. It was shown that kanamycin selection was more efficient at the stage of regenerated plantlets than in callus culture. Both vacuum infiltration at the infection step and preliminary activation of Agrobacterium by acetosyringone or by tobacco leaves exudate increased the frequency of Km-resistant plants. The frequency of Km-resistant plants also varied depending on the morphogenic ability of calli. Polymerase chain reaction confirmed the presence of the nptII gene in the genome of regenerated plants and their progeny. β-Glucuronidase gene expression was observed in roots of T1 plants.
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Abbreviations
- Km:
-
kanamycin
- Cx:
-
cefotaxime
- GUS:
-
β-glucuronidase
- MS me-dium:
-
Murashige and Skoog nutrient medium
- PCR:
-
polymerase chain reaction
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Translated from Fiziologiya Rastenii, Vol. 52, No. 4, 2005, pp. 600–607.
Original Russian Text Copyright © 2005 by Danilova, Dolgikh.
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Danilova, S.A., Dolgikh, Y.I. Optimization of Agrobacterial (Agrobacterium tumefaciens) Transformation of Maize Embryogenic Callus. Russ J Plant Physiol 52, 535–541 (2005). https://doi.org/10.1007/s11183-005-0079-5
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DOI: https://doi.org/10.1007/s11183-005-0079-5