DUMINIL, Jérôme; FINESCHI, Silvia; HAMPE, Arndt; JORDANO, Pedro; SALVINI, Daniela; VENDRAMIN, Giovanni G.; PETIT, Remy

Métadonnées

Licence d’utilisation du document

DUMINIL, Jérôme
Biodiversité, Gènes & Communautés [BioGeCo]

FINESCHI, Silvia
Istituto per la Protezione delle Piante

HAMPE, Arndt
Consejo Superior de Investigaciones Cientificas [España] = Spanish National Research Council [Spain] [CSIC]

Langue

Article de revue

Ce document a été publié dans

The American Naturalist. 2007, vol. 169, n° 5, p. 662-672

University of Chicago Press

Résumé en anglais

Population genetic structure is a key parameter in evolutionary biology. Earlier comparative studies have shown that genetic structure depends on species ecological attributes and lifehistory traits, but species phylogenetic relatedness had not been accounted for. Here we reevaluate the relationships between genetic structure and species traits in seed plants. Each species is characterized by a set of life-history and ecological features as well as by its geographic range size, its heterozygote deficit, and its genetic structure at nuclear and organelle markers to distinguish between pollenand seed-mediated gene flow. We use both a conventional regression approach and a method that controls for phylogenetic relationships.Once phylogenetic conservatism and covariation among traits are taken into account, genetic structure is shown to be related with only a few synthetic traits, such as mating system for nuclear markers and seed dispersal mode or geographic range size for organelle markers. Along with other studies on invasiveness or rarity, our work illustrates the fact that predicting the fate of species across a broad taxonomic assemblage on the basis of simple traits is rarely possible, a testimony of the highly contingent nature of evolution< Réduire

Mots clés

GENETIQUE DES POPULATIONS

GENETIQUE VEGETALE

Mots clés en anglais

COMPARATIVE METHOD

CHLOROPLAST MARKERS

INDEPENDENT CONTRASTS

NUCLEAR MARKERS

POLLEN DISPERSAL

SEED DISPERSAL

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202