RT Journal Article
T1 Population Genomics of a Cosmopolitan Weed Provides Insights Into Its Local Adaptation and Recent Demographic History
A1 Souza Lucas, Marilia
A1 Bastida Milián, Fernando
A1 Durka, Walter
AB Invasive plant species present a growing ecological and economic challenge, and often adapt rapidly to their novel environments through complex demographic and evolutionary processes. Invasion genomics offers powerful tools to disentangle these processes, but most studies rely on geographically narrow sampling across native and non-native ranges. Erigeron canadensis is a cosmopolitan weed native to North America that has successfully invaded diverse climates worldwide. We used double-digest restriction site-associated DNA sequencing (ddRADseq) to investigate the genetic diversity and structure of 280 E. canadensis populations across the Northern Hemisphere. We found that native and non-native populations maintained comparable genetic diversity. Population structure analyses revealed four genetic clusters that were mainly differentiated along latitudinal and aridity gradients. However, one cluster was strongly overrepresented in the non-native compared to the native range. In the native range, genetic differentiation was shaped by spatial and environmental gradients, while in non-native regions human-mediated dispersal and repeated introductions disrupted environmentally driven genetic structure. Migration network analyses revealed limited intercontinental connectivity and a possible role of long-distance dispersal in within-range expansions. Genomic offset analyses showed that genotype-environment mismatches in non-native.
PB Wiley
SN 0962-1083
SN 1365-294X (electrónico)
YR 2026
FD 2026
LK https://hdl.handle.net/10272/28486
UL https://hdl.handle.net/10272/28486
LA eng
NO Lucas, M. S., Rosche, C., Hensen, I., Michalski, S. G., Nagy, D. U., Gamba, D., Onstein, R. E., Abidkulova, K., Al‐Gharaibeh, M., Al‐Namazi, A. A., Babaei, S., Bastida, F., Brunharo, C., Caillon, A., Callaway, R. M., Clair, S. S., Cullen, D. A., Donnelly, R., Ennis, A., … Durka, W. (2026). Population Genomics of a Cosmopolitan Weed Provides Insights Into Its Local Adaptation and Recent Demographic History. Molecular Ecology, 35(10). https://doi.org/10.1111/mec.70368
NO This research was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation; Project number: RO 6418/1-1) and iDiv Flexpool funding (grant number W47038118). The German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena- Leipzig is funded by the DFG (FZT 118, 202548816).
DS Repositorio Institucional de la Universidad de Huelva
RD 14 jul 2026