Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin

Pinus caribaea Morelet comprises three varieties of tropical pines distributed in the Caribbean Basin: P. caribaea var. hondurensis, var. caribaea, and var. bahamensis. The insular and continental distribution of these varieties, as well as the geological processes in the region, have been important...

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Autores: Virginia Rebolledo Camacho, LEV ORLANDO JARDON BARBOLLA, Ivón Mercedes Ramírez Morillo, ALEJANDRA VAZQUEZ LOBO YUREN, Daniel Piñero, Patricia Delgado Valerio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:México
Institución:Centro de Investigación Científica de Yucatán
Repositorio:Repositorio Institucional CICY
Idioma:inglés
OAI Identifier:oai:cicy.repositorioinstitucional.mx:1003/1537
Acceso en línea:http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1537
Access Level:acceso abierto
Palabra clave:info:eu-repo/classification/Autores/CARIBBEAN BASIN
info:eu-repo/classification/Autores/GENETIC VARIATION
info:eu-repo/classification/Autores/LINEAGE DIVERGENCE
info:eu-repo/classification/Autores/MICROSATELLITES
info:eu-repo/classification/Autores/MIGRATION ROUTES
info:eu-repo/classification/Autores/PINUS CARIBAEA VARIETIES
info:eu-repo/classification/cti/2
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spelling Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean BasinVirginia Rebolledo CamachoLEV ORLANDO JARDON BARBOLLAIvón Mercedes Ramírez MorilloALEJANDRA VAZQUEZ LOBO YURENDaniel PiñeroPatricia Delgado Valerioinfo:eu-repo/classification/Autores/CARIBBEAN BASINinfo:eu-repo/classification/Autores/GENETIC VARIATIONinfo:eu-repo/classification/Autores/LINEAGE DIVERGENCEinfo:eu-repo/classification/Autores/MICROSATELLITESinfo:eu-repo/classification/Autores/MIGRATION ROUTESinfo:eu-repo/classification/Autores/PINUS CARIBAEA VARIETIESinfo:eu-repo/classification/cti/2info:eu-repo/classification/cti/2Pinus caribaea Morelet comprises three varieties of tropical pines distributed in the Caribbean Basin: P. caribaea var. hondurensis, var. caribaea, and var. bahamensis. The insular and continental distribution of these varieties, as well as the geological processes in the region, have been important factors for analysing evolutionary processes implicated in the diversification of these lineages. In this study, we evaluate the genetic and geographic structure within and between these three varieties in order to infer the possible origin and dispersal routes of these taxa. Methods– We used six polymorphic nuclear microsatellites (nSSR) in fifteen representative populations of the three pine varieties, sampled throughout their natural range in Central America, Cuba and the Bahamas islands. Results– The varieties contain similar levels of genetic variation (mean He = 0.571), with several populations out of Hardy-Weinberg equilibrium, and significant levels of inbreeding (0.097–0.184, P ≤ 0.05). A slight but significant genetic differentiation was found between the varieties (RST = 0.088) and populations (RST = 0.082), and genetic differentiation increased with geographic distance (r2 = 0.263). Distance and Bayesian BAPS analyses generated seven groups; two represented by the two island varieties and the remainder by the Central American populations of var. hondurensis. Migration rate estimates between pairs of groups ranged from M = 0.47 to M = 20.16. Estimates were generally higher from the continent to islands, with the highest migration rate estimated from a continental genetic group to the Cuba island group of var. hondurensis (M = 20.16).Conclusions– This study supports the hypothesis of a recent origin of these pine taxa through the migration of an ancestor from Central America, where the historical demography is associated with events of colonization, expansion and contraction of populations. The genetic variation and differentiation suggest that the three varieties are divergent lineages that currently share allelic variants, indicating that their speciation has not yet completed.2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://cicy.repositorioinstitucional.mx/jspui/handle/1003/1537Plant Ecology and Evolution, 151(1), 61-76, 2018.reponame:Repositorio Institucional CICYinstname:Centro de Investigación Científica de Yucatáninstacron:CICYenginfo:eu-repo/semantics/datasetDOI/10.5091/plecevo.2018.1343citation:Rebolledo Camacho, V., Jardón Barbolla, L., Ramírez Morillo, I., Vázquez-Lobo, A., Piñero, D., & Delgado, P. (2018). Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin. Plant Ecology and Evolution, 151(1), 61-76.info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0oai:cicy.repositorioinstitucional.mx:1003/15372024-08-28T03:18:40Z
dc.title.none.fl_str_mv Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
title Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
spellingShingle Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
Virginia Rebolledo Camacho
info:eu-repo/classification/Autores/CARIBBEAN BASIN
info:eu-repo/classification/Autores/GENETIC VARIATION
info:eu-repo/classification/Autores/LINEAGE DIVERGENCE
info:eu-repo/classification/Autores/MICROSATELLITES
info:eu-repo/classification/Autores/MIGRATION ROUTES
info:eu-repo/classification/Autores/PINUS CARIBAEA VARIETIES
info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/2
title_short Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
title_full Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
title_fullStr Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
title_full_unstemmed Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
title_sort Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin
dc.creator.none.fl_str_mv Virginia Rebolledo Camacho
LEV ORLANDO JARDON BARBOLLA
Ivón Mercedes Ramírez Morillo
ALEJANDRA VAZQUEZ LOBO YUREN
Daniel Piñero
Patricia Delgado Valerio
author Virginia Rebolledo Camacho
author_facet Virginia Rebolledo Camacho
LEV ORLANDO JARDON BARBOLLA
Ivón Mercedes Ramírez Morillo
ALEJANDRA VAZQUEZ LOBO YUREN
Daniel Piñero
Patricia Delgado Valerio
author_role author
author2 LEV ORLANDO JARDON BARBOLLA
Ivón Mercedes Ramírez Morillo
ALEJANDRA VAZQUEZ LOBO YUREN
Daniel Piñero
Patricia Delgado Valerio
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv info:eu-repo/classification/Autores/CARIBBEAN BASIN
info:eu-repo/classification/Autores/GENETIC VARIATION
info:eu-repo/classification/Autores/LINEAGE DIVERGENCE
info:eu-repo/classification/Autores/MICROSATELLITES
info:eu-repo/classification/Autores/MIGRATION ROUTES
info:eu-repo/classification/Autores/PINUS CARIBAEA VARIETIES
info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/2
topic info:eu-repo/classification/Autores/CARIBBEAN BASIN
info:eu-repo/classification/Autores/GENETIC VARIATION
info:eu-repo/classification/Autores/LINEAGE DIVERGENCE
info:eu-repo/classification/Autores/MICROSATELLITES
info:eu-repo/classification/Autores/MIGRATION ROUTES
info:eu-repo/classification/Autores/PINUS CARIBAEA VARIETIES
info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/2
description Pinus caribaea Morelet comprises three varieties of tropical pines distributed in the Caribbean Basin: P. caribaea var. hondurensis, var. caribaea, and var. bahamensis. The insular and continental distribution of these varieties, as well as the geological processes in the region, have been important factors for analysing evolutionary processes implicated in the diversification of these lineages. In this study, we evaluate the genetic and geographic structure within and between these three varieties in order to infer the possible origin and dispersal routes of these taxa. Methods– We used six polymorphic nuclear microsatellites (nSSR) in fifteen representative populations of the three pine varieties, sampled throughout their natural range in Central America, Cuba and the Bahamas islands. Results– The varieties contain similar levels of genetic variation (mean He = 0.571), with several populations out of Hardy-Weinberg equilibrium, and significant levels of inbreeding (0.097–0.184, P ≤ 0.05). A slight but significant genetic differentiation was found between the varieties (RST = 0.088) and populations (RST = 0.082), and genetic differentiation increased with geographic distance (r2 = 0.263). Distance and Bayesian BAPS analyses generated seven groups; two represented by the two island varieties and the remainder by the Central American populations of var. hondurensis. Migration rate estimates between pairs of groups ranged from M = 0.47 to M = 20.16. Estimates were generally higher from the continent to islands, with the highest migration rate estimated from a continental genetic group to the Cuba island group of var. hondurensis (M = 20.16).Conclusions– This study supports the hypothesis of a recent origin of these pine taxa through the migration of an ancestor from Central America, where the historical demography is associated with events of colonization, expansion and contraction of populations. The genetic variation and differentiation suggest that the three varieties are divergent lineages that currently share allelic variants, indicating that their speciation has not yet completed.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1537
url http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1537
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/datasetDOI/10.5091/plecevo.2018.1343
citation:Rebolledo Camacho, V., Jardón Barbolla, L., Ramírez Morillo, I., Vázquez-Lobo, A., Piñero, D., & Delgado, P. (2018). Genetic variation and dispersal patterns in three varieties of Pinus caribaea (Pinaceae) in the Caribbean Basin. Plant Ecology and Evolution, 151(1), 61-76.
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Plant Ecology and Evolution, 151(1), 61-76, 2018.
reponame:Repositorio Institucional CICY
instname:Centro de Investigación Científica de Yucatán
instacron:CICY
instname_str Centro de Investigación Científica de Yucatán
instacron_str CICY
institution CICY
reponame_str Repositorio Institucional CICY
collection Repositorio Institucional CICY
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repository.mail.fl_str_mv
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