Population genomic and historical analysis suggests a global invasion by bridgehead processes in Mimulus guttatus

• DOI: 10.1038/s42003-021-01795-x
• Publication Date: 2021-03-12T11:07:02Z
• Authors: Mario Vallejo-Marín; Jannice Friedman; Alex D. Twyford; Olivier Lepais; Stefanie M. Icker...; Matthew A. Streis...; Levi Yant; Mark van Kleunen; Michael C. Rotter; Joshua R. Puzey
• Keywords: 570; QH301-705.5; Population genetics; erythranthe; Mimulus; Genes, Plant; Article; multiple origins; Plant evolution; 03 medical and health sciences; bridgehead invasion; Gene Expression Regulation, Plant; hybridisation; Biologiska vetenskaper; Biology (General); info:eu-repo/classification/ddc/570; 0303 health sciences; population genomic, historical analysis, global invasion, bridgehead process, Mimulus guttatus; genotype-by-sequencing; naturalisation; Genetic Variation; Biological Sciences; 15. Life on land; Adaptation, Physiological; Biological Evolution; [SDE]Environmental Sciences; admixture; Introduced Species; Genome, Plant; approximate bayesian computation

Abstract Imperfect historical records and complex demographic histories present challenges for reconstructing the history of biological invasions. Here, we combine records, extensive worldwide genome-wide sampling, analyses to investigate global invasion Mimulus guttatus from North America Europe Southwest Pacific. By sampling 521 plants 158 native introduced populations genotyped at >44,000 loci, determined that invasive M. was first likely British Isles Aleutian Islands (Alaska), followed by admixture multiple parts range. We hypothesise in then served as a bridgehead vanguard invasions worldwide. Our results emphasise highly admixed nature demonstrate potential serve sources secondary admixture, producing novel hybrids. Unravelling provides starting point understand how adapt environments.