High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis

Autores
Arana, María Veronica; Gallo, Leonardo Ariel; Vendramin, Giovanni Giuseppe; Pastorino, Mario Juan; Sebastiani, Federico; Marchelli, Paula
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Knowledge about current patterns of genetic structure of populations together with the evolutionary history of a species helps to understand and predict the adaptation of populations to future climate change. We assayed variation at nuclear microsatellite markers among peripheral vs. continuous populations of the temperate South American species Austrocedrus chilensis, to investigate the role of historical vs. demographical forces in shaping population genetic structure. This species occurs in continuous populations in the west and central distribution range, but becomes highly fragmented at the eastern limit, which comprised ice-free areas during Quaternary glaciations and has extreme climatic conditions at present times. Bayesian analysis methods identified two contrasting patterns of genetic structure; (I) populations from humid, mesic and peri-glacial regions formed a single deme with relatively low genetic differentiation and high admixture levels whereas (II) a highly heterogeneous genetic structure with low level of admixture was found in the steppe, towards the east and northeast limit of the distribution range. In the steppe, population fragmentation, restricted gene flow and isolation-by-distance were also inferred. In addition, several small steppe populations showed high genetic diversity and divergent gene pools, suggesting that they constitute ancient refuges from pre-Holocene glaciations with just a subgroup of them contributing significantly to post-glacial spread. These results are discussed in relation to patterns of genetic variation found for other temperate species and the contribution of the particular southern Andes topography and climate to post-glacial spread.
Estación Experimental Agropecuaria Bariloche
Fil: Arana, María Veronica. Intituto Nacional de Tecnologia Agropecuaria (INTA). Estacion Experimental Agropecuaria Bariloche. Área Recursos Forestales. Unidad de Genética Ecológica y Mejoramiento Forestal; Argentina
Fil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Forestales. Unidad de Genética Ecológica y Mejoramiento Forestal; Argentina
Fil: Vendramin, Giovanni Giuseppe. National Research Council of Italy. Institute of Biosciences and Bioresources. Division of Florence; Italia
Fil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientıicas y Tecnicas; Argentina
Fil: Sebastiani, Federico. National Research Council of Italy. Institute of Biosciences and Bioresources. Division of Florence; Italia
Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientıicas y Tecnicas; Argentina
Fuente
Molecular Phylogenetics and Evolution 54 (3) : 941-949 (Marzo 2010)
Materia
Austrocedrus
Diversidad Genética (como recurso)
Adaptación al Cambio Climático
Genetic Diversity (as resource)
Climate Change Adaptation
Austrocedrus Chilensis
Región Patagónica
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/7528
Acceder
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oai_identifier_str oai:localhost:20.500.12123/7528
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spelling High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensisArana, María VeronicaGallo, Leonardo ArielVendramin, Giovanni GiuseppePastorino, Mario JuanSebastiani, FedericoMarchelli, PaulaAustrocedrusDiversidad Genética (como recurso)Adaptación al Cambio ClimáticoGenetic Diversity (as resource)Climate Change AdaptationAustrocedrus ChilensisRegión PatagónicaKnowledge about current patterns of genetic structure of populations together with the evolutionary history of a species helps to understand and predict the adaptation of populations to future climate change. We assayed variation at nuclear microsatellite markers among peripheral vs. continuous populations of the temperate South American species Austrocedrus chilensis, to investigate the role of historical vs. demographical forces in shaping population genetic structure. This species occurs in continuous populations in the west and central distribution range, but becomes highly fragmented at the eastern limit, which comprised ice-free areas during Quaternary glaciations and has extreme climatic conditions at present times. Bayesian analysis methods identified two contrasting patterns of genetic structure; (I) populations from humid, mesic and peri-glacial regions formed a single deme with relatively low genetic differentiation and high admixture levels whereas (II) a highly heterogeneous genetic structure with low level of admixture was found in the steppe, towards the east and northeast limit of the distribution range. In the steppe, population fragmentation, restricted gene flow and isolation-by-distance were also inferred. In addition, several small steppe populations showed high genetic diversity and divergent gene pools, suggesting that they constitute ancient refuges from pre-Holocene glaciations with just a subgroup of them contributing significantly to post-glacial spread. These results are discussed in relation to patterns of genetic variation found for other temperate species and the contribution of the particular southern Andes topography and climate to post-glacial spread.Estación Experimental Agropecuaria BarilocheFil: Arana, María Veronica. Intituto Nacional de Tecnologia Agropecuaria (INTA). Estacion Experimental Agropecuaria Bariloche. Área Recursos Forestales. Unidad de Genética Ecológica y Mejoramiento Forestal; ArgentinaFil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Forestales. Unidad de Genética Ecológica y Mejoramiento Forestal; ArgentinaFil: Vendramin, Giovanni Giuseppe. National Research Council of Italy. Institute of Biosciences and Bioresources. Division of Florence; ItaliaFil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientıicas y Tecnicas; ArgentinaFil: Sebastiani, Federico. National Research Council of Italy. Institute of Biosciences and Bioresources. Division of Florence; ItaliaFil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientıicas y Tecnicas; ArgentinaElsevier2020-07-07T16:53:20Z2020-07-07T16:53:20Z2010-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/7528https://www.sciencedirect.com/science/article/abs/pii/S10557903090045401055-7903https://doi.org/10.1016/j.ympev.2009.11.007Molecular Phylogenetics and Evolution 54 (3) : 941-949 (Marzo 2010)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-29T13:44:58Zoai:localhost:20.500.12123/7528instacron: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 13:44:59.185INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
title High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
spellingShingle High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
Arana, María Veronica
Austrocedrus
Diversidad Genética (como recurso)
Adaptación al Cambio Climático
Genetic Diversity (as resource)
Climate Change Adaptation
Austrocedrus Chilensis
Región Patagónica
title_short High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
title_full High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
title_fullStr High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
title_full_unstemmed High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
title_sort High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
dc.creator.none.fl_str_mv Arana, María Veronica
Gallo, Leonardo Ariel
Vendramin, Giovanni Giuseppe
Pastorino, Mario Juan
Sebastiani, Federico
Marchelli, Paula
author Arana, María Veronica
author_facet Arana, María Veronica
Gallo, Leonardo Ariel
Vendramin, Giovanni Giuseppe
Pastorino, Mario Juan
Sebastiani, Federico
Marchelli, Paula
author_role author
author2 Gallo, Leonardo Ariel
Vendramin, Giovanni Giuseppe
Pastorino, Mario Juan
Sebastiani, Federico
Marchelli, Paula
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Austrocedrus
Diversidad Genética (como recurso)
Adaptación al Cambio Climático
Genetic Diversity (as resource)
Climate Change Adaptation
Austrocedrus Chilensis
Región Patagónica
topic Austrocedrus
Diversidad Genética (como recurso)
Adaptación al Cambio Climático
Genetic Diversity (as resource)
Climate Change Adaptation
Austrocedrus Chilensis
Región Patagónica
dc.description.none.fl_txt_mv Knowledge about current patterns of genetic structure of populations together with the evolutionary history of a species helps to understand and predict the adaptation of populations to future climate change. We assayed variation at nuclear microsatellite markers among peripheral vs. continuous populations of the temperate South American species Austrocedrus chilensis, to investigate the role of historical vs. demographical forces in shaping population genetic structure. This species occurs in continuous populations in the west and central distribution range, but becomes highly fragmented at the eastern limit, which comprised ice-free areas during Quaternary glaciations and has extreme climatic conditions at present times. Bayesian analysis methods identified two contrasting patterns of genetic structure; (I) populations from humid, mesic and peri-glacial regions formed a single deme with relatively low genetic differentiation and high admixture levels whereas (II) a highly heterogeneous genetic structure with low level of admixture was found in the steppe, towards the east and northeast limit of the distribution range. In the steppe, population fragmentation, restricted gene flow and isolation-by-distance were also inferred. In addition, several small steppe populations showed high genetic diversity and divergent gene pools, suggesting that they constitute ancient refuges from pre-Holocene glaciations with just a subgroup of them contributing significantly to post-glacial spread. These results are discussed in relation to patterns of genetic variation found for other temperate species and the contribution of the particular southern Andes topography and climate to post-glacial spread.
Estación Experimental Agropecuaria Bariloche
Fil: Arana, María Veronica. Intituto Nacional de Tecnologia Agropecuaria (INTA). Estacion Experimental Agropecuaria Bariloche. Área Recursos Forestales. Unidad de Genética Ecológica y Mejoramiento Forestal; Argentina
Fil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Forestales. Unidad de Genética Ecológica y Mejoramiento Forestal; Argentina
Fil: Vendramin, Giovanni Giuseppe. National Research Council of Italy. Institute of Biosciences and Bioresources. Division of Florence; Italia
Fil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientıicas y Tecnicas; Argentina
Fil: Sebastiani, Federico. National Research Council of Italy. Institute of Biosciences and Bioresources. Division of Florence; Italia
Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientıicas y Tecnicas; Argentina
description Knowledge about current patterns of genetic structure of populations together with the evolutionary history of a species helps to understand and predict the adaptation of populations to future climate change. We assayed variation at nuclear microsatellite markers among peripheral vs. continuous populations of the temperate South American species Austrocedrus chilensis, to investigate the role of historical vs. demographical forces in shaping population genetic structure. This species occurs in continuous populations in the west and central distribution range, but becomes highly fragmented at the eastern limit, which comprised ice-free areas during Quaternary glaciations and has extreme climatic conditions at present times. Bayesian analysis methods identified two contrasting patterns of genetic structure; (I) populations from humid, mesic and peri-glacial regions formed a single deme with relatively low genetic differentiation and high admixture levels whereas (II) a highly heterogeneous genetic structure with low level of admixture was found in the steppe, towards the east and northeast limit of the distribution range. In the steppe, population fragmentation, restricted gene flow and isolation-by-distance were also inferred. In addition, several small steppe populations showed high genetic diversity and divergent gene pools, suggesting that they constitute ancient refuges from pre-Holocene glaciations with just a subgroup of them contributing significantly to post-glacial spread. These results are discussed in relation to patterns of genetic variation found for other temperate species and the contribution of the particular southern Andes topography and climate to post-glacial spread.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
2020-07-07T16:53:20Z
2020-07-07T16:53:20Z
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/20.500.12123/7528
https://www.sciencedirect.com/science/article/abs/pii/S1055790309004540
1055-7903
https://doi.org/10.1016/j.ympev.2009.11.007
url http://hdl.handle.net/20.500.12123/7528
https://www.sciencedirect.com/science/article/abs/pii/S1055790309004540
https://doi.org/10.1016/j.ympev.2009.11.007
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.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Molecular Phylogenetics and Evolution 54 (3) : 941-949 (Marzo 2010)
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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score 12.559606

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