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

Autores
Colabella, Fernando; Gallo, Leonardo Ariel; 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 (t m  − t s = 0.105), and a complete absence of correlated paternity (r p = −0.015). The effective number of pollen donors contributing to a single mother (N ep) 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.
EEA Bariloche
Fil: Colabella, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria 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, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Moreno, Angela Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. 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
Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fuente
Tree genetics & genomes 10 (6) : 1519–1529. (December 2014)
Materia
Austrocedrus
Polen
Flujo Genético
Población Vegetal
Pollen
Gene Flow
Plant Population
Austrocedrus chilensis
Cipres de la Patagonia
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/4062
Acceder
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oai_identifier_str oai:localhost:20.500.12123/4062
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spelling Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensisColabella, FernandoGallo, Leonardo ArielMoreno, Angela CarolinaMarchelli, PaulaAustrocedrusPolenFlujo GenéticoPoblación VegetalPollenGene FlowPlant PopulationAustrocedrus chilensisCipres de la PatagoniaHabitat 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 (t m  − t s = 0.105), and a complete absence of correlated paternity (r p = −0.015). The effective number of pollen donors contributing to a single mother (N ep) 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.EEA BarilocheFil: Colabella, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria 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, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; ArgentinaFil: Moreno, Angela Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. 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; ArgentinaFil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaSpringer2018-12-12T13:57:42Z2018-12-12T13:57:42Z2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/40621614-29421614-2950https://doi.org/10.1007/s11295-014-0775-4Tree genetics & genomes 10 (6) : 1519–1529. (December 2014)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/reference/hdl/20.500.12123/9878info:eu-repo/semantics/restrictedAccess2025-10-16T09:29:23Zoai:localhost:20.500.12123/4062instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-16 09:29:23.898INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
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
Austrocedrus
Polen
Flujo Genético
Población Vegetal
Pollen
Gene Flow
Plant Population
Austrocedrus chilensis
Cipres de la Patagonia
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, Leonardo Ariel
Moreno, Angela Carolina
Marchelli, Paula
author Colabella, Fernando
author_facet Colabella, Fernando
Gallo, Leonardo Ariel
Moreno, Angela Carolina
Marchelli, Paula
author_role author
author2 Gallo, Leonardo Ariel
Moreno, Angela Carolina
Marchelli, Paula
author2_role author
author
author
dc.subject.none.fl_str_mv Austrocedrus
Polen
Flujo Genético
Población Vegetal
Pollen
Gene Flow
Plant Population
Austrocedrus chilensis
Cipres de la Patagonia
topic Austrocedrus
Polen
Flujo Genético
Población Vegetal
Pollen
Gene Flow
Plant Population
Austrocedrus chilensis
Cipres de la Patagonia
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 (t m  − t s = 0.105), and a complete absence of correlated paternity (r p = −0.015). The effective number of pollen donors contributing to a single mother (N ep) 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.
EEA Bariloche
Fil: Colabella, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria 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, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Moreno, Angela Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. 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
Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria 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 (t m  − t s = 0.105), and a complete absence of correlated paternity (r p = −0.015). The effective number of pollen donors contributing to a single mother (N ep) 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 2014-12
2018-12-12T13:57:42Z
2018-12-12T13:57:42Z
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/20.500.12123/4062
1614-2942
1614-2950
https://doi.org/10.1007/s11295-014-0775-4
url http://hdl.handle.net/20.500.12123/4062
https://doi.org/10.1007/s11295-014-0775-4
identifier_str_mv 1614-2942
1614-2950
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/reference/hdl/20.500.12123/9878
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 Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv Tree genetics & genomes 10 (6) : 1519–1529. (December 2014)
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 12.712165

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