Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile)
Background and aims: In the Atacama Desert certain plant species can be found in small and isolated areas, limited to regions with water availability. The degree of connectivity within and between these natural populations depends on their pollen and seed dispersal abilities, as well as the barriers...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Sociedad Argentina de Botánica
2024
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/43576 |
| Aporte de: |
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I10-R325-article-43576 |
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| record_format |
ojs |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Español |
| format |
Artículo revista |
| topic |
algarrobo coancestría desierto Fabaceae fecundación cruzada sistema de apareamiento algarrobo desert Fabaceae kinship mating system outcrossing rate |
| spellingShingle |
algarrobo coancestría desierto Fabaceae fecundación cruzada sistema de apareamiento algarrobo desert Fabaceae kinship mating system outcrossing rate Chan, Catalina Pometti, Carolina Santoro, Calogero M. Fortunato, Renée H. McRostie, Virginia Bessega, Cecilia Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile) |
| topic_facet |
algarrobo coancestría desierto Fabaceae fecundación cruzada sistema de apareamiento algarrobo desert Fabaceae kinship mating system outcrossing rate |
| author |
Chan, Catalina Pometti, Carolina Santoro, Calogero M. Fortunato, Renée H. McRostie, Virginia Bessega, Cecilia |
| author_facet |
Chan, Catalina Pometti, Carolina Santoro, Calogero M. Fortunato, Renée H. McRostie, Virginia Bessega, Cecilia |
| author_sort |
Chan, Catalina |
| title |
Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile) |
| title_short |
Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile) |
| title_full |
Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile) |
| title_fullStr |
Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile) |
| title_full_unstemmed |
Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile) |
| title_sort |
indirect study of the mating system in a natural population of prosopis flexuosa (fabaceae) from the atacama desert, el loa province (chile) |
| description |
Background and aims: In the Atacama Desert certain plant species can be found in small and isolated areas, limited to regions with water availability. The degree of connectivity within and between these natural populations depends on their pollen and seed dispersal abilities, as well as the barriers imposed by the landscape. Prosopis flexuosa is a species of high economic and ecological importance included in the algarrobo Conservation and Management program. The main objective of this work is to analyze the genetic variability and mating system of P. flexuosa in the Atacama Desert.
M&M: Genetic diversity parameters as well as the mating system were evaluated in a natural population (Quillagua) based on microsatellite molecular markers. The hierarchical distribution of genetic variance and kinship coefficients were analyzed.
Results: The results indicate high levels of genetic diversity (HE = 0.67 and 0.65; Ar = 3.8 and 3.7), high outcrossing rates (tm = 0.97, ts = 0.85), low biparental inbreeding (11.6%) and multiple paternity. The proportion of full sibs decreases when considering seeds from the same or different pods (89????16%). Only the variance between families is significant (p < 0.001) and mean kinships estimated show that progenies within families are not only constituted by half sibs.
Conclusions: The results are discussed and related to the limited pollen and seed dispersal and their implication for the management of this resource. The study of the mating system parameters of this chilean desert population suggests that the low population density and the environment fragmentation would not be influencing their mating capacity. |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2024 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/43576 |
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2024-09-03T22:50:34Z |
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I10-R325-article-435762024-06-28T22:28:30Z Indirect study of the mating system in a natural population of Prosopis flexuosa (Fabaceae) from the Atacama Desert, El Loa province (Chile) Estudio indirecto del sistema de fecundación en una población natural de Prosopis flexuosa (Fabaceae) del Desierto de Atacama, provincia de El Loa (Chile) Chan, Catalina Pometti, Carolina Santoro, Calogero M. Fortunato, Renée H. McRostie, Virginia Bessega, Cecilia algarrobo coancestría desierto Fabaceae fecundación cruzada sistema de apareamiento algarrobo desert Fabaceae kinship mating system outcrossing rate Background and aims: In the Atacama Desert certain plant species can be found in small and isolated areas, limited to regions with water availability. The degree of connectivity within and between these natural populations depends on their pollen and seed dispersal abilities, as well as the barriers imposed by the landscape. Prosopis flexuosa is a species of high economic and ecological importance included in the algarrobo Conservation and Management program. The main objective of this work is to analyze the genetic variability and mating system of P. flexuosa in the Atacama Desert. M&M: Genetic diversity parameters as well as the mating system were evaluated in a natural population (Quillagua) based on microsatellite molecular markers. The hierarchical distribution of genetic variance and kinship coefficients were analyzed. Results: The results indicate high levels of genetic diversity (HE = 0.67 and 0.65; Ar = 3.8 and 3.7), high outcrossing rates (tm = 0.97, ts = 0.85), low biparental inbreeding (11.6%) and multiple paternity. The proportion of full sibs decreases when considering seeds from the same or different pods (89????16%). Only the variance between families is significant (p < 0.001) and mean kinships estimated show that progenies within families are not only constituted by half sibs. Conclusions: The results are discussed and related to the limited pollen and seed dispersal and their implication for the management of this resource. The study of the mating system parameters of this chilean desert population suggests that the low population density and the environment fragmentation would not be influencing their mating capacity. Introducción y Objetivos: En el desierto de Atacama ciertas plantas viven aisladas y acotadas a regiones con disponibilidad de agua. La conectividad dentro y entre poblaciones depende de las barreras impuestas por el paisaje y de su capacidad de dispersión. Prosopis flexuosa es una especie con alta importancia económica y ecológica incluida en el Programa de Conservación y Manejo del algarrobo. El objetivo de este trabajo es analizar la variabilidad genética y sistema de fecundación de P. flexuosa en el Desierto de Atacama. M&M: Se evaluó la diversidad genética y el sistema de fecundación sobre la base de marcadores moleculares microsatélites en una población natural (Quillagua). Se analizó la distribución jerárquica de la varianza genética y los niveles de las coancestrías. Resultados: Los resultados indican altos niveles de diversidad genética (HE = 0,67-0,65; Ar = 3,8-3,7), fecundación principalmente cruzada (tm = 0,97, ts = 0,85), baja endogamia biparental (11,6%) y paternidad múltiple. La proporción de hermanos completos disminuye cuando se consideran semillas del mismo o diferente fruto (89????16%). Solamente la varianza entre familias resulta significativa (p < 0,001) y las coancestrías promedio estimadas dan cuenta que las progenies familiares no están conformadas solamente por medios hermanos. Conclusiones: Los resultados son discutidos y relacionados con la dispersión limitada del polen y semillas y su implicancia para el manejo. El estudio del sistema de fecundación de esta población del desierto chileno sugiere que la baja densidad poblacional y la fragmentación del ambiente no influirían en su capacidad de apareamiento. Sociedad Argentina de Botánica 2024-06-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/43576 10.31055/1851.2372.v59.n2.43576 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 59 No. 2 (2024): June Boletín de la Sociedad Argentina de Botánica; Vol. 59 Núm. 2 (2024): Junio Boletín de la Sociedad Argentina de Botánica; v. 59 n. 2 (2024): Junio 1851-2372 0373-580X 10.31055/1851.2372.v59.n2 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/43576/45455 https://revistas.unc.edu.ar/index.php/BSAB/article/view/43576/45456 Derechos de autor 2024 Catalina Chan, Carolina Pometti, Calogero M. Santoro, Renée H. Fortunato, Virginia McRostie, Cecilia Bessega https://creativecommons.org/licenses/by-nc-nd/4.0 |