Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica

Autores
Soliani, Carolina; Tsuda, Yoshiaki; Bagnoli, Francesca; Gallo, Leonardo Ariel; Vendramin, Giovanni Giuseppe; Marchelli, Paula
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Patagonian region is characterized by a complex biogeographic history, with evidence of deep phylogeographic breaks shared among species. Of particular interest to conservation is the nature of colonization and settlement patterns after the last glacial period, including the detection of secondary contact between different lineages and/or hybridization among related species around phylogeographic breaks. Here we studied population demography and past hybridization of two widespread tree species endemic to South America, Nothofagus pumilio and N. antarctica. Using 8 nuclear microsatellites we genotyped 41 populations of both species. Genetic variation and structure across the geographic region were evaluated within and among species and the past demographic history of hybridization between the two species was inferred using Approximate Bayesian Computation (ABC). Northern and southern lineages were identified in each species, and Bayesian clustering revealed their convergence at mid latitudes (42°S). Spatial genetic structure (SGS) also indicated the existence of a genetic discontinuity at these latitudes, which is in agreement with previous data from maternal DNA markers. Several populations around 42–44°S presented high levels of genetic diversity with a decrease toward southern populations. Even though the species are clearly differentiated (G’ST = 0.335), admixed gene pools were observed in both species. Two independent runs of ABC suggested that inter species admixture-like patterns occurred within the timescale of the Last Glacial Maximum (around 20,000 BP). We also provide evidences of recent and bi-directional hybridization/introgression between the two Nothofagus species and describe features of the populationś demography in the past. The settlement of a secondary contact zone in Nothofagus species around 42–44°S coincides with the phylogeographic breaks and hotspots of genetic diversity found in other plant and animal species in Patagonia, highlighting its importance as reservoir of diversity. The characterization of the population history of native species can contribute substantially to long-term conservation and management policies.
Fil: Soliani, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Tsuda, Yoshiaki. Uppsala University. Evolutionary Biology Centre. Department of Ecology and Genetics; Suecia
Fil: Bagnoli, Francesca. Consiglio Nazionale delle Ricerche. Istituto di Bioscienze e Biorisorse; Italia
Fil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Vendramin, Giovanni Giuseppe. Consiglio Nazionale delle Ricerche. Istituto di Bioscienze e Biorisorse; Italia
Fil: Marchelli, PaulaInstituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fuente
Molecular phylogenetics and evolution 85 : 197-207. (April 2015)
Materia
Nothofagus Pumilio
Colonización
Distribución Geográfica
Rural Settlement
Geographical Distribution
Región Patagónica
Nothofagus Antarctica
Colonization
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/1273

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network_name_str INTA Digital (INTA)
spelling Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarcticaSoliani, CarolinaTsuda, YoshiakiBagnoli, FrancescaGallo, Leonardo ArielVendramin, Giovanni GiuseppeMarchelli, PaulaNothofagus PumilioColonizaciónDistribución GeográficaRural SettlementGeographical DistributionRegión PatagónicaNothofagus AntarcticaColonizationThe Patagonian region is characterized by a complex biogeographic history, with evidence of deep phylogeographic breaks shared among species. Of particular interest to conservation is the nature of colonization and settlement patterns after the last glacial period, including the detection of secondary contact between different lineages and/or hybridization among related species around phylogeographic breaks. Here we studied population demography and past hybridization of two widespread tree species endemic to South America, Nothofagus pumilio and N. antarctica. Using 8 nuclear microsatellites we genotyped 41 populations of both species. Genetic variation and structure across the geographic region were evaluated within and among species and the past demographic history of hybridization between the two species was inferred using Approximate Bayesian Computation (ABC). Northern and southern lineages were identified in each species, and Bayesian clustering revealed their convergence at mid latitudes (42°S). Spatial genetic structure (SGS) also indicated the existence of a genetic discontinuity at these latitudes, which is in agreement with previous data from maternal DNA markers. Several populations around 42–44°S presented high levels of genetic diversity with a decrease toward southern populations. Even though the species are clearly differentiated (G’ST = 0.335), admixed gene pools were observed in both species. Two independent runs of ABC suggested that inter species admixture-like patterns occurred within the timescale of the Last Glacial Maximum (around 20,000 BP). We also provide evidences of recent and bi-directional hybridization/introgression between the two Nothofagus species and describe features of the populationś demography in the past. The settlement of a secondary contact zone in Nothofagus species around 42–44°S coincides with the phylogeographic breaks and hotspots of genetic diversity found in other plant and animal species in Patagonia, highlighting its importance as reservoir of diversity. The characterization of the population history of native species can contribute substantially to long-term conservation and management policies.Fil: Soliani, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Tsuda, Yoshiaki. Uppsala University. Evolutionary Biology Centre. Department of Ecology and Genetics; SueciaFil: Bagnoli, Francesca. Consiglio Nazionale delle Ricerche. Istituto di Bioscienze e Biorisorse; ItaliaFil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; ArgentinaFil: Vendramin, Giovanni Giuseppe. Consiglio Nazionale delle Ricerche. Istituto di Bioscienze e Biorisorse; ItaliaFil: Marchelli, PaulaInstituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina2017-09-20T15:50:35Z2017-09-20T15:50:35Z2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/1273http://www.sciencedirect.com/science/article/pii/S105579031500010X1055-7903https://doi.org/10.1016/j.ympev.2015.01.006Molecular phylogenetics and evolution 85 : 197-207. (April 2015)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología AgropecuariaengPatagonia (general region)info:eu-repo/semantics/restrictedAccess2025-09-29T13:44:10Zoai:localhost:20.500.12123/1273instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:44:11.071INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
title Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
spellingShingle Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
Soliani, Carolina
Nothofagus Pumilio
Colonización
Distribución Geográfica
Rural Settlement
Geographical Distribution
Región Patagónica
Nothofagus Antarctica
Colonization
title_short Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
title_full Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
title_fullStr Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
title_full_unstemmed Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
title_sort Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
dc.creator.none.fl_str_mv Soliani, Carolina
Tsuda, Yoshiaki
Bagnoli, Francesca
Gallo, Leonardo Ariel
Vendramin, Giovanni Giuseppe
Marchelli, Paula
author Soliani, Carolina
author_facet Soliani, Carolina
Tsuda, Yoshiaki
Bagnoli, Francesca
Gallo, Leonardo Ariel
Vendramin, Giovanni Giuseppe
Marchelli, Paula
author_role author
author2 Tsuda, Yoshiaki
Bagnoli, Francesca
Gallo, Leonardo Ariel
Vendramin, Giovanni Giuseppe
Marchelli, Paula
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Nothofagus Pumilio
Colonización
Distribución Geográfica
Rural Settlement
Geographical Distribution
Región Patagónica
Nothofagus Antarctica
Colonization
topic Nothofagus Pumilio
Colonización
Distribución Geográfica
Rural Settlement
Geographical Distribution
Región Patagónica
Nothofagus Antarctica
Colonization
dc.description.none.fl_txt_mv The Patagonian region is characterized by a complex biogeographic history, with evidence of deep phylogeographic breaks shared among species. Of particular interest to conservation is the nature of colonization and settlement patterns after the last glacial period, including the detection of secondary contact between different lineages and/or hybridization among related species around phylogeographic breaks. Here we studied population demography and past hybridization of two widespread tree species endemic to South America, Nothofagus pumilio and N. antarctica. Using 8 nuclear microsatellites we genotyped 41 populations of both species. Genetic variation and structure across the geographic region were evaluated within and among species and the past demographic history of hybridization between the two species was inferred using Approximate Bayesian Computation (ABC). Northern and southern lineages were identified in each species, and Bayesian clustering revealed their convergence at mid latitudes (42°S). Spatial genetic structure (SGS) also indicated the existence of a genetic discontinuity at these latitudes, which is in agreement with previous data from maternal DNA markers. Several populations around 42–44°S presented high levels of genetic diversity with a decrease toward southern populations. Even though the species are clearly differentiated (G’ST = 0.335), admixed gene pools were observed in both species. Two independent runs of ABC suggested that inter species admixture-like patterns occurred within the timescale of the Last Glacial Maximum (around 20,000 BP). We also provide evidences of recent and bi-directional hybridization/introgression between the two Nothofagus species and describe features of the populationś demography in the past. The settlement of a secondary contact zone in Nothofagus species around 42–44°S coincides with the phylogeographic breaks and hotspots of genetic diversity found in other plant and animal species in Patagonia, highlighting its importance as reservoir of diversity. The characterization of the population history of native species can contribute substantially to long-term conservation and management policies.
Fil: Soliani, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Tsuda, Yoshiaki. Uppsala University. Evolutionary Biology Centre. Department of Ecology and Genetics; Suecia
Fil: Bagnoli, Francesca. Consiglio Nazionale delle Ricerche. Istituto di Bioscienze e Biorisorse; Italia
Fil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Vendramin, Giovanni Giuseppe. Consiglio Nazionale delle Ricerche. Istituto di Bioscienze e Biorisorse; Italia
Fil: Marchelli, PaulaInstituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The Patagonian region is characterized by a complex biogeographic history, with evidence of deep phylogeographic breaks shared among species. Of particular interest to conservation is the nature of colonization and settlement patterns after the last glacial period, including the detection of secondary contact between different lineages and/or hybridization among related species around phylogeographic breaks. Here we studied population demography and past hybridization of two widespread tree species endemic to South America, Nothofagus pumilio and N. antarctica. Using 8 nuclear microsatellites we genotyped 41 populations of both species. Genetic variation and structure across the geographic region were evaluated within and among species and the past demographic history of hybridization between the two species was inferred using Approximate Bayesian Computation (ABC). Northern and southern lineages were identified in each species, and Bayesian clustering revealed their convergence at mid latitudes (42°S). Spatial genetic structure (SGS) also indicated the existence of a genetic discontinuity at these latitudes, which is in agreement with previous data from maternal DNA markers. Several populations around 42–44°S presented high levels of genetic diversity with a decrease toward southern populations. Even though the species are clearly differentiated (G’ST = 0.335), admixed gene pools were observed in both species. Two independent runs of ABC suggested that inter species admixture-like patterns occurred within the timescale of the Last Glacial Maximum (around 20,000 BP). We also provide evidences of recent and bi-directional hybridization/introgression between the two Nothofagus species and describe features of the populationś demography in the past. The settlement of a secondary contact zone in Nothofagus species around 42–44°S coincides with the phylogeographic breaks and hotspots of genetic diversity found in other plant and animal species in Patagonia, highlighting its importance as reservoir of diversity. The characterization of the population history of native species can contribute substantially to long-term conservation and management policies.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
2017-09-20T15:50:35Z
2017-09-20T15:50:35Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/1273
http://www.sciencedirect.com/science/article/pii/S105579031500010X
1055-7903
https://doi.org/10.1016/j.ympev.2015.01.006
url http://hdl.handle.net/20.500.12123/1273
http://www.sciencedirect.com/science/article/pii/S105579031500010X
https://doi.org/10.1016/j.ympev.2015.01.006
identifier_str_mv 1055-7903
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Patagonia (general region)
dc.source.none.fl_str_mv Molecular phylogenetics and evolution 85 : 197-207. (April 2015)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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