Self-incompatibility in Ulex europaeus: Variations in native and invaded regions
| Autor: | Anne Atlan, Agnès Schermann-Legionnet, Nathalie Udo, Michèle Tarayre |
|---|---|
| Přispěvatelé: | Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Pollination ved/biology.organism_classification_rank.species Outcrossing Plant Science 010603 evolutionary biology 01 natural sciences Shrub self-incompatibility invasive species Pollinator Botany Inbreeding depression Ecology Evolution Behavior and Systematics biology ved/biology Selfing food and beverages Baker’s rule 15. Life on land biology.organism_classification Mating system Ulex europaeus [SDE.BE]Environmental Sciences/Biodiversity and Ecology gorse 010606 plant biology & botany inbreeding depression |
| Zdroj: | International Journal of Plant Sciences International Journal of Plant Sciences, University of Chicago Press, 2015, 176 (6), pp.515-524. ⟨10.1086/681669⟩ International Journal of Plant Sciences, 2015, 176 (6), pp.515-524. ⟨10.1086/681669⟩ |
| ISSN: | 1058-5893 |
| Popis: | International audience; Premise of research. The mating systems of introduced plant species are important components of their invasive success because they can favor reproductive assurance during the colonization process. The hypothesis known as Baker’s rule implies that colonizing species should evolve toward a lower dependence on pollinators, a higher self-fertility, and a lower inbreeding depression. Here, we test these predictions by comparing the mating system of the perennial shrub Ulex europaeus (Fabaceae) in regions from its native and invaded ranges.Methodology. We performed controlled pollinations on plants from two regions of origin (Brittany and Scotland) and two invaded regions (New Zealand and Reunion) grown in a common garden. We tested the possibility of autonomous pollination; estimated the relative seed set of selfing versus outcrossing; and recorded the viability, mass, and germination capacity of the seeds produced. Pivotal results. Ulex europaeus cannot set seeds in the absence of active pollination. Seed set after selfing was lower than seed set after outcrossing, indicating that the species is partly self-incompatible. The level of self-compatibility was highly variable depending on the individuals, but native and invaded regions exhibited similar levels of self-fertility. Early inbreeding depression was very low in both native and invaded regions. Seed mass and germination velocity were higher in the invaded regions than in the native regions.Conclusions. Reproductive traits linked with reproductive assurance (autonomous pollination, self-fertility, inbreeding depression) were similar in native and in introduced regions, which does not support the predictions of Baker’s rule. The study, however, reveals that plants from the invaded regions exhibit higher values for seed traits related to competitive ability at early stages. These results can be explained by the life history of gorse and by the history of its introduction in the invaded regions. |
| Databáze: | OpenAIRE |
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