RT Journal Article
SR Electronic
T1 Rapid adaptation and range expansion in response to agriculture over the last two centuries
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2022.02.25.482047
DO 10.1101/2022.02.25.482047
A1 Julia Kreiner
A1 Sergio M. Latorre
A1 Hernán A. Burbano
A1 John R. Stinchcombe
A1 Sarah P. Otto
A1 Detlef Weigel
A1 Stephen I. Wright
YR 2022
UL http://biorxiv.org/content/early/2022/03/01/2022.02.25.482047.abstract
AB North America has seen 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 last two centuries, we studied the impact of these changes in farming on the extent and tempo of evolution in the native common waterhemp (Amaranthus tuberculatus), a now pervasive agricultural weed. Modern agriculture has imposed strengths of selection rarely observed in the wild (0.027-0.10), with striking 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 and variation for fitness, agriculture has driven the success of this 21st-century weed.One Sentence Summary Modern agriculture has dramatically shaped the evolution of a native plant into an agricultural weed through imposing strengths of selection rarely observed in the wild.Competing Interest StatementThe authors have declared no competing interest.