High rates of gene flow by pollen and seed in oak populations across Europe.
Gene flow is a key factor in the evolution of species, influencing effective population size, hybridisation and local adaptation. We analysed local gene flow in eight stands of white oak (mostly Quercus petraea and Q. robur, but also Q. pubescens and Q. faginea) distributed across Europe. Adult tree...
Main Authors: | , , , , , , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Public Library of Science (PLoS)
2014-01-01
|
Series: | PLoS ONE |
Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24454802/?tool=EBI |
id |
doaj-57f8d82cea3040549efa43a97e8cd7b4 |
---|---|
record_format |
Article |
spelling |
doaj-57f8d82cea3040549efa43a97e8cd7b42021-03-04T10:02:52ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0191e8513010.1371/journal.pone.0085130High rates of gene flow by pollen and seed in oak populations across Europe.Sophie GerberJoël ChadœufFelix GugerliMartin LascouxJoukje BuiteveldJoan CottrellAikaterini DounaviSilvia FineschiLaura L ForrestJohan FogelqvistPablo G GoicoecheaJan Svejgaard JensenDaniela SalviniGiovanni G VendraminAntoine KremerGene flow is a key factor in the evolution of species, influencing effective population size, hybridisation and local adaptation. We analysed local gene flow in eight stands of white oak (mostly Quercus petraea and Q. robur, but also Q. pubescens and Q. faginea) distributed across Europe. Adult trees within a given area in each stand were exhaustively sampled (range [239, 754], mean 423), mapped, and acorns were collected ([17,147], 51) from several mother trees ([3], [47], 23). Seedlings ([65,387], 178) were harvested and geo-referenced in six of the eight stands. Genetic information was obtained from screening distinct molecular markers spread across the genome, genotyping each tree, acorn or seedling. All samples were thus genotyped at 5-8 nuclear microsatellite loci. Fathers/parents were assigned to acorns and seedlings using likelihood methods. Mating success of male and female parents, pollen and seed dispersal curves, and also hybridisation rates were estimated in each stand and compared on a continental scale. On average, the percentage of the wind-borne pollen from outside the stand was 60%, with large variation among stands (21-88%). Mean seed immigration into the stand was 40%, a high value for oaks that are generally considered to have limited seed dispersal. However, this estimate varied greatly among stands (20-66%). Gene flow was mostly intraspecific, with large variation, as some trees and stands showed particularly high rates of hybridisation. Our results show that mating success was unevenly distributed among trees. The high levels of gene flow suggest that geographically remote oak stands are unlikely to be genetically isolated, questioning the static definition of gene reserves and seed stands.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24454802/?tool=EBI |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sophie Gerber Joël Chadœuf Felix Gugerli Martin Lascoux Joukje Buiteveld Joan Cottrell Aikaterini Dounavi Silvia Fineschi Laura L Forrest Johan Fogelqvist Pablo G Goicoechea Jan Svejgaard Jensen Daniela Salvini Giovanni G Vendramin Antoine Kremer |
spellingShingle |
Sophie Gerber Joël Chadœuf Felix Gugerli Martin Lascoux Joukje Buiteveld Joan Cottrell Aikaterini Dounavi Silvia Fineschi Laura L Forrest Johan Fogelqvist Pablo G Goicoechea Jan Svejgaard Jensen Daniela Salvini Giovanni G Vendramin Antoine Kremer High rates of gene flow by pollen and seed in oak populations across Europe. PLoS ONE |
author_facet |
Sophie Gerber Joël Chadœuf Felix Gugerli Martin Lascoux Joukje Buiteveld Joan Cottrell Aikaterini Dounavi Silvia Fineschi Laura L Forrest Johan Fogelqvist Pablo G Goicoechea Jan Svejgaard Jensen Daniela Salvini Giovanni G Vendramin Antoine Kremer |
author_sort |
Sophie Gerber |
title |
High rates of gene flow by pollen and seed in oak populations across Europe. |
title_short |
High rates of gene flow by pollen and seed in oak populations across Europe. |
title_full |
High rates of gene flow by pollen and seed in oak populations across Europe. |
title_fullStr |
High rates of gene flow by pollen and seed in oak populations across Europe. |
title_full_unstemmed |
High rates of gene flow by pollen and seed in oak populations across Europe. |
title_sort |
high rates of gene flow by pollen and seed in oak populations across europe. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2014-01-01 |
description |
Gene flow is a key factor in the evolution of species, influencing effective population size, hybridisation and local adaptation. We analysed local gene flow in eight stands of white oak (mostly Quercus petraea and Q. robur, but also Q. pubescens and Q. faginea) distributed across Europe. Adult trees within a given area in each stand were exhaustively sampled (range [239, 754], mean 423), mapped, and acorns were collected ([17,147], 51) from several mother trees ([3], [47], 23). Seedlings ([65,387], 178) were harvested and geo-referenced in six of the eight stands. Genetic information was obtained from screening distinct molecular markers spread across the genome, genotyping each tree, acorn or seedling. All samples were thus genotyped at 5-8 nuclear microsatellite loci. Fathers/parents were assigned to acorns and seedlings using likelihood methods. Mating success of male and female parents, pollen and seed dispersal curves, and also hybridisation rates were estimated in each stand and compared on a continental scale. On average, the percentage of the wind-borne pollen from outside the stand was 60%, with large variation among stands (21-88%). Mean seed immigration into the stand was 40%, a high value for oaks that are generally considered to have limited seed dispersal. However, this estimate varied greatly among stands (20-66%). Gene flow was mostly intraspecific, with large variation, as some trees and stands showed particularly high rates of hybridisation. Our results show that mating success was unevenly distributed among trees. The high levels of gene flow suggest that geographically remote oak stands are unlikely to be genetically isolated, questioning the static definition of gene reserves and seed stands. |
url |
https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24454802/?tool=EBI |
work_keys_str_mv |
AT sophiegerber highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT joelchadœuf highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT felixgugerli highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT martinlascoux highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT joukjebuiteveld highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT joancottrell highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT aikaterinidounavi highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT silviafineschi highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT lauralforrest highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT johanfogelqvist highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT pabloggoicoechea highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT jansvejgaardjensen highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT danielasalvini highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT giovannigvendramin highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope AT antoinekremer highratesofgeneflowbypollenandseedinoakpopulationsacrosseurope |
_version_ |
1714806690374746112 |