Abstract
Parthenium argentatum (guayule) was transformed with a bicistronic transgene containing a viral 2A cleavage sequence. The transgene includes the coding sequences of two key enzymes of the mevalonate pathway, 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR) and farnesyl pyrophosphate synthase (FPPS), involved in rubber biosynthesis. The viral 2A peptide sequence located between the two transgenes allowed for their co-expression via the Arabidopsis CBF2 (C-Binding repeat Factor 2) cold-inducible promoter. We identified three independent transgenic lines expressing the bicistronic transgenes upon cold treatment and examined the rubber content in the in vitro guayule plants.
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Acknowledgements
This research was funded by the United States Department of Agriculture, Agricultural Research Service, under National Program 306: Quality and Utilization of Agricultural Products. We are especially grateful to Roger Thilmony for critically reviewing our manuscript.
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Ponciano, G., Dong, N., Chen, G. et al. A bicistronic transgene system for genetic modification of Parthenium argentatum. Plant Biotechnol Rep 12, 149–155 (2018). https://doi.org/10.1007/s11816-018-0478-7
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DOI: https://doi.org/10.1007/s11816-018-0478-7