Data from: Evolution of invasiveness by genetic accommodation Bock, Dan G.; Kantar, Michael B.; Caseys, Celine; Matthey-Doret, Remi; Rieseberg, Loren H.
Invasion success of species introduced to novel environments may be facilitated by adaptive evolution and by phenotypic plasticity. Here we investigate the independent and joint contribution of both mechanisms as drivers of invasiveness in the perennial sunflower Helianthus tuberosus. We show that invasive genotypes have multiple origins, and that invasive spread was facilitated by the repeated evolution of extreme values in a single trait, clonality. In line with genetic accommodation theory, we establish that this evolutionary transition occurred by refining a preexisting plastic response of clonality to water availability. Further, we demonstrate that under the non-drought conditions typically experienced by this plant in its introduced range, invasive spread is mediated by hybrid vigor and/or two major additive-effect loci, and that these mechanisms are complementary. Thus, in H. tuberosus, evolution of invasiveness was facilitated by phenotypic plasticity, and involved the use of multiple genetic solutions to achieve the same invasiveness trait.; Usage notes
Common garden and greenhouse trait data for 305 H. tuberosus accessionsH_tuberosus_CG_GR_traits.csvData for the field invasiveness experimentfield_invasiveness_experiment.csvRhizome numbers from the greenhouse drought experimentgreenhouse_drought_experiment.csvAllelopathy estimates for the progenitor species of H. tuberosusallelopathy_progenitor_species.csvSoil water content measurements for the invasiveness field experimentwater_content_data.csv
Item Citations and Data