Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile)
In the Atacama Desert from northern Chile (19– 24°S), Prosopis (Leguminosae) individuals are restricted to oases that are unevenly distributed and isolated from each other by large stretches of barren landscape constituting an interesting study model as the degree of connectivity between natural pop...
| Autores principales: | , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2021
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/9052 https://onlinelibrary.wiley.com/doi/10.1002/ece3.7212 https://doi.org/10.1002/ece3.7212 |
| _version_ | 1855484320168280064 |
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| author | Bessega, Cecilia Pometti, Carolina Fortunato, Renee Hersilia Greene, Francisca Santoro, Calogero M. McRostie, Virginia |
| author_browse | Bessega, Cecilia Fortunato, Renee Hersilia Greene, Francisca McRostie, Virginia Pometti, Carolina Santoro, Calogero M. |
| author_facet | Bessega, Cecilia Pometti, Carolina Fortunato, Renee Hersilia Greene, Francisca Santoro, Calogero M. McRostie, Virginia |
| author_sort | Bessega, Cecilia |
| collection | INTA Digital |
| description | In the Atacama Desert from northern Chile (19– 24°S), Prosopis (Leguminosae) individuals are restricted to oases that are unevenly distributed and isolated from each other by large stretches of barren landscape constituting an interesting study model as the degree of connectivity between natural populations depends on their dispersal capacity and the barriers imposed by the landscape. Our goal was to assess the genetic diversity and the degree of differentiation among groups of Prosopis individuals of different species from Section Algarobia and putative hybrids (hereafter populations) co- occurring in these isolated oases from the Atacama Desert and determine whether genetic patterns are associated with dispersal barriers. Thirteen populations were sampled from oases located on three hydrographic basins (Pampa del Tamarugal, Rio Loa, and Salar de Atacama; northern, central, and southern basins, respectively). Individuals genotyped by eight SSRs show high levels of genetic diversity (HO = 0.61, Ar = 3.5) and low but significant genetic differentiation among populations (FST = 0.128, FST- ENA = 0.129, DJOST = 0.238). The AMOVA indicates that most of the variation occurs within individuals (79%) and from the variance among individuals (21%); almost, the same variation can be found between basins and between populations within basins. Differentiation and structure results were not associated with the basins, retrieving up to four genetic clusters and certain admixture in the central populations. Pairwise differentiation comparisons among populations showed inconsistencies considering their distribution throughout the basins. Genetic and geographic distances were significantly correlated at global and within the basins considered (p < .02), but low correlation indices were obtained (r < .37). These results are discussed in relation to the fragmented landscape, considering both natural and non- natural (humans) dispersal agents that may be moving Prosopis in the Atacama Desert. |
| format | Artículo |
| id | INTA9052 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA90522021-04-09T12:06:26Z Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile) Bessega, Cecilia Pometti, Carolina Fortunato, Renee Hersilia Greene, Francisca Santoro, Calogero M. McRostie, Virginia Ceratonia siliqua Diversidad Genética Microsatélites Estructura Genetic Diversity Structure Microsatellites Chile Prosopis Factores Sociocultural Sociocultural Factors Desierto de Atacama, Chile In the Atacama Desert from northern Chile (19– 24°S), Prosopis (Leguminosae) individuals are restricted to oases that are unevenly distributed and isolated from each other by large stretches of barren landscape constituting an interesting study model as the degree of connectivity between natural populations depends on their dispersal capacity and the barriers imposed by the landscape. Our goal was to assess the genetic diversity and the degree of differentiation among groups of Prosopis individuals of different species from Section Algarobia and putative hybrids (hereafter populations) co- occurring in these isolated oases from the Atacama Desert and determine whether genetic patterns are associated with dispersal barriers. Thirteen populations were sampled from oases located on three hydrographic basins (Pampa del Tamarugal, Rio Loa, and Salar de Atacama; northern, central, and southern basins, respectively). Individuals genotyped by eight SSRs show high levels of genetic diversity (HO = 0.61, Ar = 3.5) and low but significant genetic differentiation among populations (FST = 0.128, FST- ENA = 0.129, DJOST = 0.238). The AMOVA indicates that most of the variation occurs within individuals (79%) and from the variance among individuals (21%); almost, the same variation can be found between basins and between populations within basins. Differentiation and structure results were not associated with the basins, retrieving up to four genetic clusters and certain admixture in the central populations. Pairwise differentiation comparisons among populations showed inconsistencies considering their distribution throughout the basins. Genetic and geographic distances were significantly correlated at global and within the basins considered (p < .02), but low correlation indices were obtained (r < .37). These results are discussed in relation to the fragmented landscape, considering both natural and non- natural (humans) dispersal agents that may be moving Prosopis in the Atacama Desert. Fil: Bessega, Cecilia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Génetica y Evolución. Instituto de Ecología, Genética y Evolución; Argentina Fil: Pometti, Carolina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Génetica y Evolución. Instituto de Ecología, Genética y Evolución; Argentina Fil: Fortunato, Renee Hersilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Morón. Facultad de Agronomía y Ciencias Agroalimentarias; Argentina Fil: Greene, Francisca. San Pedro de Atacama, Chile Fil: Santoro, Calogero M. Universidad de Tarapacá. Instituto de Alta Investigación; Chile Fil: McRostie, Virginia. Pontificia Universidad Católica de Chile. Facultad de Ciencias Sociales. Escuela de Antropología. Centro del Desierto de Atacama; Chile 2021-04-09T11:52:01Z 2021-04-09T11:52:01Z 2021-03-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/9052 https://onlinelibrary.wiley.com/doi/10.1002/ece3.7212 2045-7758 https://doi.org/10.1002/ece3.7212 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Wiley Ecology & Evolution 11 (5) : 2375-2390 (March 2021) |
| spellingShingle | Ceratonia siliqua Diversidad Genética Microsatélites Estructura Genetic Diversity Structure Microsatellites Chile Prosopis Factores Sociocultural Sociocultural Factors Desierto de Atacama, Chile Bessega, Cecilia Pometti, Carolina Fortunato, Renee Hersilia Greene, Francisca Santoro, Calogero M. McRostie, Virginia Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile) |
| title | Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile) |
| title_full | Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile) |
| title_fullStr | Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile) |
| title_full_unstemmed | Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile) |
| title_short | Genetic studies of various Prosopis species (Leguminosae, Section Algarobia) co- occurring in oases of the Atacama Desert (northern Chile) |
| title_sort | genetic studies of various prosopis species leguminosae section algarobia co occurring in oases of the atacama desert northern chile |
| topic | Ceratonia siliqua Diversidad Genética Microsatélites Estructura Genetic Diversity Structure Microsatellites Chile Prosopis Factores Sociocultural Sociocultural Factors Desierto de Atacama, Chile |
| url | http://hdl.handle.net/20.500.12123/9052 https://onlinelibrary.wiley.com/doi/10.1002/ece3.7212 https://doi.org/10.1002/ece3.7212 |
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