High prevalence of multiple paternity within fruits in natural populations of Silene latifolia, as revealed by microsatellite DNA analysis

Détails

ID Serval
serval:BIB_47348D20F5FD
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
High prevalence of multiple paternity within fruits in natural populations of Silene latifolia, as revealed by microsatellite DNA analysis
Périodique
Molecular Ecology
Auteur(s)
Teixeira S., Bernasconi G.
ISSN
0962-1083
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
16
Numéro
20
Pages
4370-9
Notes
Journal Article Research Support, Non-U.S. Gov't
Résumé
Data on multiple paternity within broods has been gathered in several animal species, and comparable data in plants would be of great importance to understand the evolution of reproductive traits in a common framework. In this study, we first isolated and characterized six microsatellite loci from the dioecious plant Silene latifolia (Caryophyllaceae). The polymorphism of the loci was assessed in 60 individual females from four different populations. Two of the investigated loci showed a pattern of inheritance consistent with X-linkage. These microsatellite loci were highly polymorphic and therefore useful tools for parentage analysis. We then used four of the markers to determine paternity within naturally pollinated fruits in four European populations. This study revealed widespread multiple paternity in all populations investigated. The minimum number of fathers per fruit varied from one to nine, with population means ranging from 3.4 to 4.9. The number of fathers per fruit was not significantly correlated with offspring sex ratios. High prevalence of multiple paternity within fruits strongly suggest that pollen competition is likely to occur in this species. This may substantially impact male reproductive success and possibly contribute to increase female and offspring fitness, either through postpollination selection or increased genetic diversity. Wide variation in outcrossing rates may be an overlooked aspect of plant mating systems.
Pubmed
Web of science
Création de la notice
24/01/2008 20:25
Dernière modification de la notice
03/03/2018 16:49
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