Abstract
The News and Views article by Gray and Raybould1 paints a rosy picture of the future of agricultural crops engineered with resistance to the herbicide glyphosate. It is true that the presence of the glyphosate resistance transgene (the EPSPS gene) in the chloroplast genome of crop plants would eliminate pollen transfer of this gene to weedy relatives. But there have already been large-scale releases of transgenic, glyphosate-resistant (‘Roundup Ready’) crops, including glyphosate-resistant Brassica napus (Canola, varieties Quest and LG3295), which is disturbing as there are many Brassica weeds that could potentially hybridize with the engineered B. napus (for example, see ref. 2).
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References
Gray, A. J. & Raybould, A. F. Nature 392, 653–654 (1998).
Landbo, L. & Jorgensen, R. B. Euphytica 97, 209–216 (1997).
Bradshaw, L. D., Padgette, S. R., Kimball, S. L. & Wells, B. H. Weed Technol. 11, 189–198 (1997).
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Robert, S., Baumann, U. Resistance to the herbicide glyphosate. Nature 395, 25–26 (1998). https://doi.org/10.1038/25628
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DOI: https://doi.org/10.1038/25628
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