The global invasion, and subsequent spread and evolution of weeds provides unique opportunities to address fundamental questions in evolutionary and invasion ecology. Amaranthus palmeri is a widespread glyphosate-resistant (GR) weed in the USA. Since 2015, GR populations of A. palmeri have been confirmed in South America, raising questions about introduction pathways and the importance of pre- versus post-invasion evolution of GR traits. We used RAD-Seq genotyping to characterize genetic structure of populations from Brazil, Argentina, Uruguay and the USA. We also quantified gene copy number of ...
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Gaines, T.; Slavov, G.; Hughes, D.; Kuepper, A.; Sparks, C.; Oliva, J.; Vila-Aiub, M.; Garcia, M. A.; Merotto, A.; Neve, P.
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Gaines, T. A., Slavov, G. T., Hughes, D., Küpper, A., Sparks, C. D., Oliva, J., Vila-Aiub, M. M., Garcia, M. A., Merotto, A., & Neve, P. (2021). Investigating the origins and evolution of a glyphosate-resistant weed invasion in South America. Molecular Ecology, 30, 5360– 5372. https://doi.org/10.1111/mec.16221