Nucleic Acids Research, 1988, Vol. 16, No. 15 7601-7618
© 1988
Articles |
Expression of tandem gene fusions in transgenic tobacco plants
Advanced Genetic Sciences Inc 6701 San Pablo Ave, Oakland, CA 94608, USA
1Present addresses: IPSR, John Innes Institute, Colney Lane, Norwich, NR4 7UH, UK
2Present addresse: Department of Plant Pathology, University of California at Riverside, Riverside, CA 92521
3Present addresses: Biochemistry Department Oklahoma State University, Stiliwater, OK 74074, USA
*To whom correspondence should be addressed
Received January 29, 1988. Revised May 7, 1988. Accepted May 7, 1988.
We have studied the expression of four sets of tandem gene fusions in transgenic tobacco plants. This was to determine if the problem of between-transformant variability in expression of introduced genes could be overcome by using a linked reference gene as a co-ordinately expressed control. Tandem gene fusions containing identical 5' flanking regions (SSU301-ocs with either SSU301-cat or SSU301-SSU911) were not co-ordinately expressed in the transgenic tobacco plants whereas the tandem gene fusions containing similar but not identical 5' flanking regions (SSU301-QCS with SSU911-cat or SSU911-SSU301) were co-ordinately expressed. The lack of co-ordinate expression of some of the tandem gene fusions appears to be partially explained by absence of the corresponding genomic DNA segments in the transgenic plants.
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