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
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/4062
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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/restrictedAccess2025-09-29T13:44:31Zoai: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:l2025-09-29 13:44:31.697INTA 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) |
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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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12.559606 |