Uncovering the genomic basis of an extraordinary plant invasion

Vanessa C. Bieker, Paul Battlay, Bent Petersen, Xin Sun, Jonathan Wilson, Jaelle C. Brealey, François Bretagnolle, Kristin Nurkowski, Chris Lee, Fátima Sánchez Barreiro, Gregory L. Owens, Jacqueline Y. Lee, Fabian L. Kellner, Lotte van Boheeman, Shyam Gopalakrishnan, Myriam Gaudeul, Heinz Mueller-Schaerer, Suzanne Lommen, Gerhard Karrer, Bruno ChauvelYan Sun, Bojan Kostantinovic, Love Dalén, Péter Poczai, Loren H. Rieseberg, M. Thomas P. Gilbert, Kathryn A. Hodgins, Michael D. Martin

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Abstract

Invasive species are a key driver of the global biodiversity crisis, but the drivers of invasiveness, including the role of pathogens, remain debated. We investigated the genomic basis of invasiveness in Ambrosia artemisiifolia (common ragweed), introduced to Europe in the late 19th century, by resequencing 655 ragweed genomes, including 308 herbarium specimens collected up to 190 years ago. In invasive European populations, we found selection signatures in defense genes and lower prevalence of disease-inducing plant pathogens. Together with temporal changes in population structure associated with introgression from closely related Ambrosia species, escape from specific microbial enemies likely favored the plant's remarkable success as an invasive species.

OriginalsprogEngelsk
Artikelnummereabo5115
TidsskriftScience Advances
Vol/bind8
Udgave nummer34
Antal sider18
ISSN2375-2548
DOI
StatusUdgivet - 2022

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