Phenotypic plasticity, population structure and adaptation in a young weed species with a worldwide distribution
| Autor: | Sylvain Glémin, Xiujie Ge, Amandine Cornille, Mathieu Tiret, Adriana Salcedo, Marion Orsucci, Martin Lascoux, Karl Holm, Stephen I. Wright, Huaqiu Huang, Pascal Milesi, John R. Stinchcombe, Dmytro Kryvokhyzha |
|---|---|
| Přispěvatelé: | University of Toronto, Department of Ecology and Evolutionary Biology, Toronto, Ontario, Canada |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0303 health sciences Phenotypic plasticity education.field_of_study [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] biology Range (biology) Ecology business.industry Population Capsella Distribution (economics) biology.organism_classification 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Colonization Adaptation education business Weed 030304 developmental biology |
| Zdroj: | BiorXiv bioRxiv |
| Popis: | SummaryThe colonization success of a species depends on phenotypic plasticity, adaptive potential and population structure. Assessing their relative contributions during a colonization process is challenging, and a large-scale experiment had yet to be done. In this study, we attempted to tease apart their effects on the fitness of one of the most common plant on Earth, the shepherd’s purse (Capsella bursa-pastoris), a self-fertilizing and allopolyploid weed, with a worldwide distribution. The overarching goal is to eventually understand how the shepherd’s purse extensive distribution range was established so rapidly. To do so, we carried out three common gardens, located in Europe, Asia and North America, and measured several life-history traits on field-collected accessions belonging to three distinct genetic clusters (Middle East, Europe, and Asia). Our experiment showed that (i) the success of C. bursa-pastoris is mainly due to its high degree of phenotypic plasticity; and (ii), genetic cluster effect reflected a classic pattern observed in core vs marginal populations, with the Middle Eastern cluster (putative core population) outperforming the European and Asian clusters. This study therefore revealed, in a model species, different relative contributions of plasticity and adaptation to fitness, depending on the population and the time since colonization occurred. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|