Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis

Autores
Colabella, Fernando; Gallo, L. A.; Moreno, Angela Carolina; Marchelli, Paula
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Habitat fragmentation might significantly affect mating and pollen dispersal patterns in plant populations, contributing to the decline of remnant populations. However, wind-pollinated species are able to disperse pollen at longer distances after opening of the canopy. Our objectives were to characterize the mating system parameters and to estimate the average distance of effective pollen dispersal in the wind-pollinated conifer Austrocedrus chilensis. We sampled 19 “mother trees,” 200 progeny, and 81 additional adults (both male and female), in a fragmented population at the Argentinean Patagonian steppe. We registered the spatial positions of individuals and genotyped all samples with five microsatellite markers. We found a high genetic diversity, a moderated rate of biparental inbreeding (tm  − ts = 0.105), and a complete absence of correlated paternity (rp = −0.015). The effective number of pollen donors contributing to a single mother (Nep) was 13.9. Applying TWOGENER, we estimated a low but significant differentiation among the inferred pollen pools (ΦFT = 0.036, p = 0.001) and a very large average pollen dispersal distance (d = 1,032.3 m). The leptokurtic distribution (b = 0.18) presumes a potential for even larger dispersal distances. The high genetic diversity, the mating patterns, and the extensive pollen dispersal presume that habitat fragmentation did not have a negative impact on pollen movement in this population of A. chilensis. Genetic connectivity among fragmented populations scattered in the Patagonian region is possible, and we stress the need of management policies at the landscape level.
Fil: Colabella, Fernando. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Gallo, L. A.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina
Fil: Moreno, Angela Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina
Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Gene Flow
Twogener
Mating System
Pollen Dispersal
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/29482
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/29482
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensisColabella, FernandoGallo, L. A.Moreno, Angela CarolinaMarchelli, PaulaGene FlowTwogenerMating SystemPollen Dispersalhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Habitat fragmentation might significantly affect mating and pollen dispersal patterns in plant populations, contributing to the decline of remnant populations. However, wind-pollinated species are able to disperse pollen at longer distances after opening of the canopy. Our objectives were to characterize the mating system parameters and to estimate the average distance of effective pollen dispersal in the wind-pollinated conifer Austrocedrus chilensis. We sampled 19 “mother trees,” 200 progeny, and 81 additional adults (both male and female), in a fragmented population at the Argentinean Patagonian steppe. We registered the spatial positions of individuals and genotyped all samples with five microsatellite markers. We found a high genetic diversity, a moderated rate of biparental inbreeding (tm  − ts = 0.105), and a complete absence of correlated paternity (rp = −0.015). The effective number of pollen donors contributing to a single mother (Nep) was 13.9. Applying TWOGENER, we estimated a low but significant differentiation among the inferred pollen pools (ΦFT = 0.036, p = 0.001) and a very large average pollen dispersal distance (d = 1,032.3 m). The leptokurtic distribution (b = 0.18) presumes a potential for even larger dispersal distances. The high genetic diversity, the mating patterns, and the extensive pollen dispersal presume that habitat fragmentation did not have a negative impact on pollen movement in this population of A. chilensis. Genetic connectivity among fragmented populations scattered in the Patagonian region is possible, and we stress the need of management policies at the landscape level.Fil: Colabella, Fernando. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Gallo, L. A.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; ArgentinaFil: Moreno, Angela Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; ArgentinaFil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaSpringer Heidelberg2014-07-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/29482Colabella, Fernando; Gallo, L. A.; Moreno, Angela Carolina; Marchelli, Paula; Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis; Springer Heidelberg; Tree Genetics & Genomes; 10; 6; 30-7-2014; 1519-15291614-2942CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007/s11295-014-0775-4/fulltext.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s11295-014-0775-4info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:41:33Zoai:ri.conicet.gov.ar:11336/29482instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:41:34.221CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
title Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
spellingShingle Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
Colabella, Fernando
Gene Flow
Twogener
Mating System
Pollen Dispersal
title_short Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
title_full Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
title_fullStr Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
title_full_unstemmed Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
title_sort Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
dc.creator.none.fl_str_mv Colabella, Fernando
Gallo, L. A.
Moreno, Angela Carolina
Marchelli, Paula
author Colabella, Fernando
author_facet Colabella, Fernando
Gallo, L. A.
Moreno, Angela Carolina
Marchelli, Paula
author_role author
author2 Gallo, L. A.
Moreno, Angela Carolina
Marchelli, Paula
author2_role author
author
author
dc.subject.none.fl_str_mv Gene Flow
Twogener
Mating System
Pollen Dispersal
topic Gene Flow
Twogener
Mating System
Pollen Dispersal
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Habitat fragmentation might significantly affect mating and pollen dispersal patterns in plant populations, contributing to the decline of remnant populations. However, wind-pollinated species are able to disperse pollen at longer distances after opening of the canopy. Our objectives were to characterize the mating system parameters and to estimate the average distance of effective pollen dispersal in the wind-pollinated conifer Austrocedrus chilensis. We sampled 19 “mother trees,” 200 progeny, and 81 additional adults (both male and female), in a fragmented population at the Argentinean Patagonian steppe. We registered the spatial positions of individuals and genotyped all samples with five microsatellite markers. We found a high genetic diversity, a moderated rate of biparental inbreeding (tm  − ts = 0.105), and a complete absence of correlated paternity (rp = −0.015). The effective number of pollen donors contributing to a single mother (Nep) was 13.9. Applying TWOGENER, we estimated a low but significant differentiation among the inferred pollen pools (ΦFT = 0.036, p = 0.001) and a very large average pollen dispersal distance (d = 1,032.3 m). The leptokurtic distribution (b = 0.18) presumes a potential for even larger dispersal distances. The high genetic diversity, the mating patterns, and the extensive pollen dispersal presume that habitat fragmentation did not have a negative impact on pollen movement in this population of A. chilensis. Genetic connectivity among fragmented populations scattered in the Patagonian region is possible, and we stress the need of management policies at the landscape level.
Fil: Colabella, Fernando. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Gallo, L. A.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina
Fil: Moreno, Angela Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina
Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Habitat fragmentation might significantly affect mating and pollen dispersal patterns in plant populations, contributing to the decline of remnant populations. However, wind-pollinated species are able to disperse pollen at longer distances after opening of the canopy. Our objectives were to characterize the mating system parameters and to estimate the average distance of effective pollen dispersal in the wind-pollinated conifer Austrocedrus chilensis. We sampled 19 “mother trees,” 200 progeny, and 81 additional adults (both male and female), in a fragmented population at the Argentinean Patagonian steppe. We registered the spatial positions of individuals and genotyped all samples with five microsatellite markers. We found a high genetic diversity, a moderated rate of biparental inbreeding (tm  − ts = 0.105), and a complete absence of correlated paternity (rp = −0.015). The effective number of pollen donors contributing to a single mother (Nep) was 13.9. Applying TWOGENER, we estimated a low but significant differentiation among the inferred pollen pools (ΦFT = 0.036, p = 0.001) and a very large average pollen dispersal distance (d = 1,032.3 m). The leptokurtic distribution (b = 0.18) presumes a potential for even larger dispersal distances. The high genetic diversity, the mating patterns, and the extensive pollen dispersal presume that habitat fragmentation did not have a negative impact on pollen movement in this population of A. chilensis. Genetic connectivity among fragmented populations scattered in the Patagonian region is possible, and we stress the need of management policies at the landscape level.
publishDate 2014
dc.date.none.fl_str_mv 2014-07-30
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/11336/29482
Colabella, Fernando; Gallo, L. A.; Moreno, Angela Carolina; Marchelli, Paula; Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis; Springer Heidelberg; Tree Genetics & Genomes; 10; 6; 30-7-2014; 1519-1529
1614-2942
CONICET Digital
CONICET
url http://hdl.handle.net/11336/29482
identifier_str_mv Colabella, Fernando; Gallo, L. A.; Moreno, Angela Carolina; Marchelli, Paula; Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis; Springer Heidelberg; Tree Genetics & Genomes; 10; 6; 30-7-2014; 1519-1529
1614-2942
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007/s11295-014-0775-4/fulltext.html
info:eu-repo/semantics/altIdentifier/doi/10.1007/s11295-014-0775-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer Heidelberg
publisher.none.fl_str_mv Springer Heidelberg
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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