The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources
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Universidad de Costa Rica
2008
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5690 |
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RBT56902022-06-06T17:30:40Z The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources Barrantes, Daniel Macaya, Gabriel Guarino, Luigi Pierre Bouduin, Jean J. Rocha, Oscar Diversidad genética metapoblación diferenciación genética banco de semillas del suelo conservación in situ frijol lima Phaseolus lunatus extinción local recolonización recursos genéticos Genetic diversity metapopulation genetic differentiation soil seed bank in situ conservation lima beans local extinction recolonization genetic resources Plant populations may experience local extinction and at the same time new populations may appear in nearby suitable locations. Species may also colonize the same site on multiple occasions. Here, we examined the impact of local extinction and recolonization on the genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica. We compared genetic diversity from the samples taken from the populations before and after extinction at 13 locations using microsatellite markers. Locations were classified according to the occurrence of extinction episodes during the previous five years into three groups: 1) populations that experienced extinction for more than one year, and were later recolonized (recolonized), 2) populations that did not experience local extinction (control), and 3) populations that did not experience local extinction during the study, but were cut to experimentally simulate extinction (experimental). Our data did not show a clear tendency in variation in allele frequencies, expected heterozygosity, and effective number of alleles within and between groups of populations. However, we found that the level of genetic differentiation between samples collected at different times at the same location was different in the three groups of populations. Recolonized locations showed the highest level of genetic differentiation (mean Fst = 0.2769), followed by control locations (mean Fst = 0.0576) and experimental locations (mean Fst = 0.0189). Similar findings were observed for Nei's genetic distance between samples (di,j = 0.1786, 0.0400, and 0.0037, respectively). Our results indicate that genetic change in lima beans depends on the duration and frequency of local extinction episodes. These findings also showed that control populations are not in equilibrium. Implications of these results for the establishment of conservation strategies of genetic resources of lima beans are discussed. Universidad de Costa Rica 2008-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5690 10.15517/rbt.v56i3.5690 Revista de Biología Tropical; Vol. 56 No. 3 (2008): Volume 56 – Regular number 3 – September 2008; 1023–1041 Revista de Biología Tropical; Vol. 56 Núm. 3 (2008): Volumen 56 – Número regular 3 – Setiembre 2008; 1023–1041 Revista Biología Tropical; Vol. 56 N.º 3 (2008): Volume 56 – Regular number 3 – September 2008; 1023–1041 2215-2075 0034-7744 10.15517/rbt.v56i3 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5690/5432 Copyright (c) 2008 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Barrantes, Daniel Macaya, Gabriel Guarino, Luigi Pierre Bouduin, Jean J. Rocha, Oscar |
| spellingShingle |
Barrantes, Daniel Macaya, Gabriel Guarino, Luigi Pierre Bouduin, Jean J. Rocha, Oscar The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources |
| author_facet |
Barrantes, Daniel Macaya, Gabriel Guarino, Luigi Pierre Bouduin, Jean J. Rocha, Oscar |
| author_sort |
Barrantes, Daniel |
| title |
The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources |
| title_short |
The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources |
| title_full |
The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources |
| title_fullStr |
The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources |
| title_full_unstemmed |
The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources |
| title_sort |
impact of local extinction on genetic structure of wild populations of lima beans (phaseolus lunatus) in the central valley of costa rica: consequences for the conservation of plant genetic resources |
| title_alt |
The impact of local extinction on genetic structure of wild populations of lima beans (Phaseolus lunatus) in the Central Valley of Costa Rica: consequences for the conservation of plant genetic resources |
| publisher |
Universidad de Costa Rica |
| publishDate |
2008 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5690 |
| work_keys_str_mv |
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1810114562864709632 |