Demographic history of the trace metal ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
PMID :
Title :
Demographic history of the trace metal hyperaccumulator Noccaea caerulescens (J. Presl and C. Presl) F. K. Mey. in Western Europe
Author(s) :
Gonneau, Cédric [Auteur]
Laboratoire Sols et Environnement [LSE]
Noret, Nausicaa [Auteur]
Université libre de Bruxelles [ULB]
Godé, Cécile [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Frerot, Helene [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Sirguey, Catherine [Auteur]
Laboratoire Sols et Environnement [LSE]
Sterckeman, Thibault [Auteur]
Laboratoire Sols et Environnement [LSE]
Pauwels, Maxime [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Laboratoire Sols et Environnement [LSE]
Noret, Nausicaa [Auteur]
Université libre de Bruxelles [ULB]
Godé, Cécile [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Frerot, Helene [Auteur]

Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Sirguey, Catherine [Auteur]
Laboratoire Sols et Environnement [LSE]
Sterckeman, Thibault [Auteur]
Laboratoire Sols et Environnement [LSE]
Pauwels, Maxime [Auteur]

Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Journal title :
Molecular ecology
Pages :
904-922
Publisher :
Wiley
Publication date :
2017
ISSN :
0962-1083
English keyword(s) :
APPROXIMATE BAYESIAN COMPUTATION; ARABIDOPSIS-HALLERI BRASSICACEAE; POSTGLACIAL COLONIZATION ROUTES; SINGLE NUCLEOTIDE POLYMORPHISM; NON-METALLICOLOUS POPULATIONS; MULTILOCUS GENOTYPE DATA; THLASPI-CAERULESCENS; GENETIC DIVERSITY; MICROSATELLITE LOCI; NONMETALLICOLOUS POPULATIONS
HAL domain(s) :
Sciences du Vivant [q-bio]/Génétique/Génétique des populations [q-bio.PE]
English abstract : [en]
Noccaea caerulescens (Brassicaceae) is a major pseudometallophyte model for the investigation of the genetics and evolution of metal hyperaccumulation in plants. We studied the population genetics and demographic history ...
Show more >Noccaea caerulescens (Brassicaceae) is a major pseudometallophyte model for the investigation of the genetics and evolution of metal hyperaccumulation in plants. We studied the population genetics and demographic history of this species to advance the understanding of among-population differences in metal hyperaccumulation and tolerance abilities. Sampling of seven to 30 plants was carried out in 62 sites in Western Europe. Genotyping was carried out using a combination of new chloroplast and nuclear neutral markers. A strong genetic structure was detected, allowing the definition of three genetic subunits. Subunits showed a good geographic coherence. Accordingly, distant metallicolous populations generally belonged to distinct subunits. Approximate Bayesian computation analysis of demographic scenarios among subunits further supported a primary isolation of populations from the southern Massif Central prior to last glacial maximum, whereas northern populations may have derived during postglacial recolonization events. Estimated divergence times among subunits were rather recent in comparison with the species history, but certainly before the establishment of anthropogenic metalliferous sites. Our results suggest that the large-scale genetic structure of N. caerulescens populations pre-existed to the local adaptation to metalliferous sites. The population structure of quantitative variation for metal-related adaptive traits must have established independently in isolated gene pools. However, features of the most divergent genetic unit (e.g. extreme levels of Cd accumulation observed in previous studies) question the putative relationships between adaptive evolution of metal-related traits and subunits isolation. Finally, admixture signals among distant metallicolous populations suggest a putative role of human activities in facilitating long-distance genetic exchanges.Show less >
Show more >Noccaea caerulescens (Brassicaceae) is a major pseudometallophyte model for the investigation of the genetics and evolution of metal hyperaccumulation in plants. We studied the population genetics and demographic history of this species to advance the understanding of among-population differences in metal hyperaccumulation and tolerance abilities. Sampling of seven to 30 plants was carried out in 62 sites in Western Europe. Genotyping was carried out using a combination of new chloroplast and nuclear neutral markers. A strong genetic structure was detected, allowing the definition of three genetic subunits. Subunits showed a good geographic coherence. Accordingly, distant metallicolous populations generally belonged to distinct subunits. Approximate Bayesian computation analysis of demographic scenarios among subunits further supported a primary isolation of populations from the southern Massif Central prior to last glacial maximum, whereas northern populations may have derived during postglacial recolonization events. Estimated divergence times among subunits were rather recent in comparison with the species history, but certainly before the establishment of anthropogenic metalliferous sites. Our results suggest that the large-scale genetic structure of N. caerulescens populations pre-existed to the local adaptation to metalliferous sites. The population structure of quantitative variation for metal-related adaptive traits must have established independently in isolated gene pools. However, features of the most divergent genetic unit (e.g. extreme levels of Cd accumulation observed in previous studies) question the putative relationships between adaptive evolution of metal-related traits and subunits isolation. Finally, admixture signals among distant metallicolous populations suggest a putative role of human activities in facilitating long-distance genetic exchanges.Show less >
Language :
Anglais
Popular science :
Non
Source :