Evolutionary epidemiology predicts the emergence of glyphosate resistance in a major agricultural weed

Comont, D., Hicks, H.L. ORCID: 0000-0003-1325-2293, Crook, L., Hull, R., Cocciantelli, E., Hadfield, J., Childs, D., Freckleton, R. and Neve, P., 2019. Evolutionary epidemiology predicts the emergence of glyphosate resistance in a major agricultural weed. New Phytologist. ISSN 0028-646X

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Abstract

The evolution of resistance to herbicides is a striking example of rapid, human-directed adaptation with major consequences for food production. Most studies of herbicide resistance are performed reactively and focus on post-hoc determination of resistance mechanisms following the evolution of field resistance. If the evolution of resistance can be anticipated however, pro-active management to slow or prevent resistance traits evolving can be advocated.

We report a national-scale study that combines population monitoring, glyphosate sensitivity assays, quantitative genetics and epidemiological analyses to pro-actively identify the prerequisites for adaptive evolution (directional selection and heritable genetic variation) to the world’s most widely used herbicide (glyphosate) in a major, economically damaging weed species, Alopecurus myosuroides.

Results highlighted pronounced, heritable variability in glyphosate sensitivity amongst UK A. myosuroides populations. We demonstrated a direct epidemiological link between historical glyphosate selection and current population-level sensitivity, and show that current field populations respond to further glyphosate selection.

This study provides a novel, pro-active assessment of adaptive potential for herbicide resistance, and provides compelling evidence of directional selection for glyphosate insensitivity in advance of reports of field resistance. The epidemiological approach developed can provide a basis for further pro-active study of resistance evolution across pesticide resistance disciplines.

Item Type: Journal article
Publication Title: New Phytologist
Creators: Comont, D., Hicks, H.L., Crook, L., Hull, R., Cocciantelli, E., Hadfield, J., Childs, D., Freckleton, R. and Neve, P.
Publisher: Wiley-Blackwell
Date: 18 March 2019
ISSN: 0028-646X
Identifiers:
NumberType
10.1111/nph.15800DOI
Divisions: Schools > School of Animal, Rural and Environmental Sciences
Depositing User: Jonathan Gallacher
Date Added: 09 May 2019 15:12
Last Modified: 18 Mar 2020 03:00
URI: http://irep.ntu.ac.uk/id/eprint/36451

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