Abstract
The engineering of metabolic pathways in plants often requires the concerted expression of more than one gene. While with traditional transgenic approaches, the expression of multiple transgenes has been challenging, recent progress has greatly expanded our repertoire of powerful techniques making this possible. New technological options include large-scale co-transformation of the nuclear genome, also referred to as combinatorial transformation, and transformation of the chloroplast genome with synthetic operon constructs. This review describes the state of the art in multigene genetic engineering of plants. It focuses on the methods currently available for the introduction of multiple transgenes into plants and the molecular mechanisms underlying successful transgene expression. Selected examples of metabolic pathway engineering are used to illustrate the attractions and limitations of each method and to highlight key factors that influence the experimenter’s choice of the best strategy for multigene engineering.
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Work on plastid transformation, combinatorial transformation and metabolic pathway engineering in the author’s laboratory is supported by grants from the Bundesministerium für Bildung und Forschung (BMBF), the European Union (EU-FP7 METAPRO 244348, COST Actions FA0804 and FA1006), the Deutsche Forschungsgemeinschaft (DFG) and by the Max Planck Society.
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Bock, R. Strategies for metabolic pathway engineering with multiple transgenes. Plant Mol Biol 83, 21–31 (2013). https://doi.org/10.1007/s11103-013-0045-0
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DOI: https://doi.org/10.1007/s11103-013-0045-0