Articles

TRANSFORMATION OF RASPBERRY CALLUS BY DIRECT INCORPORATION OF PLASMID PCB1346 AND TRANSFER OF THIS PLASMID INTO APPLE CALLUSES BY COCULTIVATION OF THESE CALLUSES

Article number
484_100
Pages
587 – 590
Language
Abstract
Genetically increased levels of native cytokinins may decrease apical dominance and increase lateral branching and cropping of some genotypes of fruit plants.
The plasmid pCB1346 constructed in the Institute of Molecular Biology in Ceské Budéjovice carries the isopentenyltransferase gene with kanamycin and tetracyclin resistance as marker.
This plasmid was isolated from bacteria Escherichia coli and used for direct incorporation into cells of a callus cell suspension of the raspberry cultivar ‘Stolicznaya’. After selection of transformed calluses, this callus was used as a donor of plasmid pCB1346 by cocultivation with calluses of the apple cultivars ‘Antonovka’ and ‘Rubin’. Derived calluses, which were able to grow on nutrient media without cytokinins and in the presence of kanamycin and tetracyclin, differed morphologically from original calluses.
The shifted ratio of phytohormones changed the conditions for differentiation.

Publication
Authors
A. Friedrich, J. Váchová
Keywords
Rubus, Malus, differentiation
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