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Rapid weed adaptation and range expansion in response to agriculture over the past two centuries

Kreiner, Julia M; Latorre, Sergio M; Burbano, Hernán A; Stinchcombe, John R; Otto, Sarah P; Weigel, Detlef; Wright, Stephen I; (2022) Rapid weed adaptation and range expansion in response to agriculture over the past two centuries. Science , 378 (6624) pp. 1079-1085. 10.1126/science.abo7293. Green open access

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Abstract

North America has experienced a massive increase in cropland use since 1800, accompanied more recently by the intensification of agricultural practices. Through genome analysis of present-day and historical samples spanning environments over the past two centuries, we studied the effect of these changes in farming on the extent and tempo of evolution across the native range of the common waterhemp (Amaranthus tuberculatus), a now pervasive agricultural weed. Modern agriculture has imposed strengths of selection rarely observed in the wild, with notable shifts in allele frequency trajectories since agricultural intensification in the 1960s. An evolutionary response to this extreme selection was facilitated by a concurrent human-mediated range shift. By reshaping genome-wide diversity across the landscape, agriculture has driven the success of this weed in the 21st century.

Type: Article
Title: Rapid weed adaptation and range expansion in response to agriculture over the past two centuries
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1126/science.abo7293
Publisher version: https://doi.org/10.1126/science.abo7293
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment
URI: https://discovery.ucl.ac.uk/id/eprint/10168703
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