2019
Hernández-Leal, Mariana S.; Suárez-Atilano, Marco; Piñero, Daniel; González-Rodríguez, Antonio
Regional patterns of genetic structure and environmental differentiation in willow populations (Salix humboldtiana Willd.) from Central Mexico Artículo de revista
En: Ecology and Evolution, vol. 9, iss. 17, pp. 9564-9579, 2019, ISSN: 20457758.
Resumen | Enlaces | Etiquetas: ecological niche modeling, Genetic diversity, genetic structure, niche divergence, riparian ecosystem
@article{nokey,
title = {Regional patterns of genetic structure and environmental differentiation in willow populations (Salix humboldtiana Willd.) from Central Mexico},
author = {Mariana S. Hernández-Leal and Marco Suárez-Atilano and Daniel Piñero and Antonio González-Rodríguez},
doi = {10.1002/ece3.5475},
issn = {20457758},
year = {2019},
date = {2019-01-01},
journal = {Ecology and Evolution},
volume = {9},
issue = {17},
pages = {9564-9579},
publisher = {John Wiley and Sons Ltd},
abstract = {Aim: To infer the geological and climatic factors that have shaped the genetic diversity and structure of a willow species (Salix humboldtiana) in three basins of Central Mexico. Location: Central Mexico. Methods: We collected samples from 11 populations across two hydrological basins (Balsas and Lerma) and one population from another basin (Ameca) within the Mexican Central Plateau (MCP). Individuals were analyzed using sequences of two chloroplast DNA (cpDNA) regions and eight nuclear simple sequence repeats (nSSR). Population genetic diversity and structure were determined from these data. To evaluate whether genetic structure was associated with ecological niche differentiation, we determined whether there is niche equivalence, overlap, or divergence between the Balsas and Lerma basins. Also, we evaluated the relative contributions of geographic distribution and climatic variation on population genetic structuring through redundancy analysis (RDA) and partial RDA. Results: Both cpDNA and nSSRs data indicated the presence of three highly differentiated genetic groups, mostly geographically congruent with the three main hydrological basins. According to nSSRs, the three genetic groups can be further subdivided into eight subgroups corresponding to different rivers within the main basins. The niche equivalency test showed that the niches of the species in the Balsas and Lerma basins are significantly nonequivalent. The RDA indicated a significant association of genetic variation among populations with climate variables (particularly those related to the precipitation regime), while controlling for geographic distribution. Main conclusions: The genetic structure of S. humboldtiana is strongly associated with the historical and current geological configuration of the basins and the rivers within basins. The observed hierarchical genetic differentiation can be due to gene flow limitation resulting from physical barriers to the dispersal of S. humboldtiana, but also to some degree of isolation by environment, as suggested by the significant association between genetic variation among populations and precipitation regime.},
keywords = {ecological niche modeling, Genetic diversity, genetic structure, niche divergence, riparian ecosystem},
pubstate = {published},
tppubtype = {article}
}
Aim: To infer the geological and climatic factors that have shaped the genetic diversity and structure of a willow species (Salix humboldtiana) in three basins of Central Mexico. Location: Central Mexico. Methods: We collected samples from 11 populations across two hydrological basins (Balsas and Lerma) and one population from another basin (Ameca) within the Mexican Central Plateau (MCP). Individuals were analyzed using sequences of two chloroplast DNA (cpDNA) regions and eight nuclear simple sequence repeats (nSSR). Population genetic diversity and structure were determined from these data. To evaluate whether genetic structure was associated with ecological niche differentiation, we determined whether there is niche equivalence, overlap, or divergence between the Balsas and Lerma basins. Also, we evaluated the relative contributions of geographic distribution and climatic variation on population genetic structuring through redundancy analysis (RDA) and partial RDA. Results: Both cpDNA and nSSRs data indicated the presence of three highly differentiated genetic groups, mostly geographically congruent with the three main hydrological basins. According to nSSRs, the three genetic groups can be further subdivided into eight subgroups corresponding to different rivers within the main basins. The niche equivalency test showed that the niches of the species in the Balsas and Lerma basins are significantly nonequivalent. The RDA indicated a significant association of genetic variation among populations with climate variables (particularly those related to the precipitation regime), while controlling for geographic distribution. Main conclusions: The genetic structure of S. humboldtiana is strongly associated with the historical and current geological configuration of the basins and the rivers within basins. The observed hierarchical genetic differentiation can be due to gene flow limitation resulting from physical barriers to the dispersal of S. humboldtiana, but also to some degree of isolation by environment, as suggested by the significant association between genetic variation among populations and precipitation regime.
2018
Rodríguez-Gómez, Flor; Oyama, Ken; Ochoa-Orozco, Magaly; Mendoza-Cuenca, Luis; Gaytán-Legaria, Ricardo; González-Rodríguez, Antonio
Phylogeography and climate-associated morphological variation in the endemic white oak Quercus deserticola (Fagaceae) along the Trans-Mexican Volcanic Belt Artículo de revista
En: Botany, vol. 96, iss. 2, pp. 121-131, 2018, ISSN: 19162804.
Resumen | Enlaces | Etiquetas: ecological niche modeling, gene flow, Last Glacial Maximum, Mexican oaks
@article{nokey,
title = {Phylogeography and climate-associated morphological variation in the endemic white oak Quercus deserticola (Fagaceae) along the Trans-Mexican Volcanic Belt},
author = {Flor Rodríguez-Gómez and Ken Oyama and Magaly Ochoa-Orozco and Luis Mendoza-Cuenca and Ricardo Gaytán-Legaria and Antonio González-Rodríguez},
doi = {10.1139/cjb-2017-0116},
issn = {19162804},
year = {2018},
date = {2018-01-01},
journal = {Botany},
volume = {96},
issue = {2},
pages = {121-131},
publisher = {Canadian Science Publishing},
abstract = {Mexico is a center of diversification for the genus Quercus, with an important number of taxa occurring along the Trans-Mexican Volcanic Belt (TMVB). However, the impact of the interaction between historical and current climatic variation and geological heterogeneity in the TMVB on the genetic and phenotypic diversification within oak species has been scarcely investigated. We used chloroplast DNA microsatellites and a geometric morphometrics analysis of leaf shape to understand differentiation between populations of Quercus deserticola Trel., which inhabits dry highlands along the TMVB. Ecological niche modeling for present-day conditions and projections into past scenarios were performed to evaluate the influence of environmental variables on the evolutionary history of the species. Results showed high genetic diversity (hS = 0.774) and high genetic structure (RST = 0.75) and the morphological subdivision of populations into two clusters, corresponding to the west/south and east/north sectors of the Q. deserticola geographic distribution. Ecological niche modeling indicated that the potential distribution of the species has remained similar from the late Pleistocene to the present. Seemingly, the phylogeographic structure of the species has been shaped by low seed-mediated gene flow and mostly local migration patterns. In turn, leaf shape is responding to climate differences either through phenotypic plasticity or local adaptation.},
keywords = {ecological niche modeling, gene flow, Last Glacial Maximum, Mexican oaks},
pubstate = {published},
tppubtype = {article}
}
Mexico is a center of diversification for the genus Quercus, with an important number of taxa occurring along the Trans-Mexican Volcanic Belt (TMVB). However, the impact of the interaction between historical and current climatic variation and geological heterogeneity in the TMVB on the genetic and phenotypic diversification within oak species has been scarcely investigated. We used chloroplast DNA microsatellites and a geometric morphometrics analysis of leaf shape to understand differentiation between populations of Quercus deserticola Trel., which inhabits dry highlands along the TMVB. Ecological niche modeling for present-day conditions and projections into past scenarios were performed to evaluate the influence of environmental variables on the evolutionary history of the species. Results showed high genetic diversity (hS = 0.774) and high genetic structure (RST = 0.75) and the morphological subdivision of populations into two clusters, corresponding to the west/south and east/north sectors of the Q. deserticola geographic distribution. Ecological niche modeling indicated that the potential distribution of the species has remained similar from the late Pleistocene to the present. Seemingly, the phylogeographic structure of the species has been shaped by low seed-mediated gene flow and mostly local migration patterns. In turn, leaf shape is responding to climate differences either through phenotypic plasticity or local adaptation.
2011
Gugger, Paul F.; Gonzalez-Rodriguez, Antonio; Rodriguez-Correa, Hernando; Sugita, Shinya; Cavender-Bares, Jeannine
Southward Pleistocene migration of Douglas-fir into Mexico: Phylogeography, ecological niche modeling, and conservation of 'rear edge' populations Artículo de revista
En: New Phytologist, vol. 189, iss. 4, pp. 1185-1199, 2011, ISSN: 0028646X.
Resumen | Enlaces | Etiquetas: CpDNA, CpSSR, ecological niche modeling, Mexico, MtDNA, Phylogeography, Pseudotsuga menziesii, Rear edge
@article{Gugger2011,
title = {Southward Pleistocene migration of Douglas-fir into Mexico: Phylogeography, ecological niche modeling, and conservation of 'rear edge' populations},
author = {Paul F. Gugger and Antonio Gonzalez-Rodriguez and Hernando Rodriguez-Correa and Shinya Sugita and Jeannine Cavender-Bares},
doi = {10.1111/j.1469-8137.2010.03559.x},
issn = {0028646X},
year = {2011},
date = {2011-01-01},
journal = {New Phytologist},
volume = {189},
issue = {4},
pages = {1185-1199},
abstract = {Poleward Pleistocene plant migration has been an important process structuring modern temperate and boreal plant communities, but the contribution of equatorward migration remains poorly understood. Paleobotanical evidence suggests Miocene or Pleistocene origin for temperate 'sky island' plant taxa in Mexico. These 'rear edge' populations situated in a biodiversity hotspot may be an important reserve of genetic diversity in changing climates. We used mtDNA sequences, cpDNA sequences and chloroplast microsatellites to test hypotheses of Miocene vs Pleistocene colonization of temperate Douglas-fir in Mexico, explore geographic patterns of molecular variation in relation to Pleistocene climate history using ecological niche models, and assess the taxonomic and conservation implications. We found strong evidence for Pleistocene divergence of Douglas-fir in Mexico (958 thousand yr before present (ka) with the 90% highest posterior density interval ranging from 1.6 million yr before present (Ma) to 491ka), consistent with the southward Pleistocene migration hypothesis. Genetic diversity was high and strongly partitioned among populations. Spatial patterns of molecular variation and ecological niche models suggest a complex late Pleistocene history involving periods of isolation and expansion along mountain corridors. These results highlight the importance of southward Pleistocene migration in establishing modern high-diversity plant communities and provide critical insights into proposals to conserve the unique biodiversity of Mexican Douglas-fir and associated taxa. © 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.},
keywords = {CpDNA, CpSSR, ecological niche modeling, Mexico, MtDNA, Phylogeography, Pseudotsuga menziesii, Rear edge},
pubstate = {published},
tppubtype = {article}
}
Poleward Pleistocene plant migration has been an important process structuring modern temperate and boreal plant communities, but the contribution of equatorward migration remains poorly understood. Paleobotanical evidence suggests Miocene or Pleistocene origin for temperate 'sky island' plant taxa in Mexico. These 'rear edge' populations situated in a biodiversity hotspot may be an important reserve of genetic diversity in changing climates. We used mtDNA sequences, cpDNA sequences and chloroplast microsatellites to test hypotheses of Miocene vs Pleistocene colonization of temperate Douglas-fir in Mexico, explore geographic patterns of molecular variation in relation to Pleistocene climate history using ecological niche models, and assess the taxonomic and conservation implications. We found strong evidence for Pleistocene divergence of Douglas-fir in Mexico (958 thousand yr before present (ka) with the 90% highest posterior density interval ranging from 1.6 million yr before present (Ma) to 491ka), consistent with the southward Pleistocene migration hypothesis. Genetic diversity was high and strongly partitioned among populations. Spatial patterns of molecular variation and ecological niche models suggest a complex late Pleistocene history involving periods of isolation and expansion along mountain corridors. These results highlight the importance of southward Pleistocene migration in establishing modern high-diversity plant communities and provide critical insights into proposals to conserve the unique biodiversity of Mexican Douglas-fir and associated taxa. © 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.
Gugger, Paul F.; Gonzalez-Rodriguez, Antonio; Rodriguez-Correa, Hernando; Sugita, Shinya; Cavender-Bares, Jeannine
Southward Pleistocene migration of Douglas-fir into Mexico: Phylogeography, ecological niche modeling, and conservation of 'rear edge' populations Artículo de revista
En: New Phytologist, vol. 189, iss. 4, pp. 1185-1199, 2011, ISSN: 0028646X.
Resumen | Enlaces | Etiquetas: CpDNA, CpSSR, ecological niche modeling, Mexico, MtDNA, Phylogeography, Pseudotsuga menziesii, Rear edge
@article{Gugger2011b,
title = {Southward Pleistocene migration of Douglas-fir into Mexico: Phylogeography, ecological niche modeling, and conservation of 'rear edge' populations},
author = {Paul F. Gugger and Antonio Gonzalez-Rodriguez and Hernando Rodriguez-Correa and Shinya Sugita and Jeannine Cavender-Bares},
doi = {10.1111/j.1469-8137.2010.03559.x},
issn = {0028646X},
year = {2011},
date = {2011-01-01},
journal = {New Phytologist},
volume = {189},
issue = {4},
pages = {1185-1199},
abstract = {Poleward Pleistocene plant migration has been an important process structuring modern temperate and boreal plant communities, but the contribution of equatorward migration remains poorly understood. Paleobotanical evidence suggests Miocene or Pleistocene origin for temperate 'sky island' plant taxa in Mexico. These 'rear edge' populations situated in a biodiversity hotspot may be an important reserve of genetic diversity in changing climates. We used mtDNA sequences, cpDNA sequences and chloroplast microsatellites to test hypotheses of Miocene vs Pleistocene colonization of temperate Douglas-fir in Mexico, explore geographic patterns of molecular variation in relation to Pleistocene climate history using ecological niche models, and assess the taxonomic and conservation implications. We found strong evidence for Pleistocene divergence of Douglas-fir in Mexico (958 thousand yr before present (ka) with the 90% highest posterior density interval ranging from 1.6 million yr before present (Ma) to 491ka), consistent with the southward Pleistocene migration hypothesis. Genetic diversity was high and strongly partitioned among populations. Spatial patterns of molecular variation and ecological niche models suggest a complex late Pleistocene history involving periods of isolation and expansion along mountain corridors. These results highlight the importance of southward Pleistocene migration in establishing modern high-diversity plant communities and provide critical insights into proposals to conserve the unique biodiversity of Mexican Douglas-fir and associated taxa. © 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.},
keywords = {CpDNA, CpSSR, ecological niche modeling, Mexico, MtDNA, Phylogeography, Pseudotsuga menziesii, Rear edge},
pubstate = {published},
tppubtype = {article}
}
Poleward Pleistocene plant migration has been an important process structuring modern temperate and boreal plant communities, but the contribution of equatorward migration remains poorly understood. Paleobotanical evidence suggests Miocene or Pleistocene origin for temperate 'sky island' plant taxa in Mexico. These 'rear edge' populations situated in a biodiversity hotspot may be an important reserve of genetic diversity in changing climates. We used mtDNA sequences, cpDNA sequences and chloroplast microsatellites to test hypotheses of Miocene vs Pleistocene colonization of temperate Douglas-fir in Mexico, explore geographic patterns of molecular variation in relation to Pleistocene climate history using ecological niche models, and assess the taxonomic and conservation implications. We found strong evidence for Pleistocene divergence of Douglas-fir in Mexico (958 thousand yr before present (ka) with the 90% highest posterior density interval ranging from 1.6 million yr before present (Ma) to 491ka), consistent with the southward Pleistocene migration hypothesis. Genetic diversity was high and strongly partitioned among populations. Spatial patterns of molecular variation and ecological niche models suggest a complex late Pleistocene history involving periods of isolation and expansion along mountain corridors. These results highlight the importance of southward Pleistocene migration in establishing modern high-diversity plant communities and provide critical insights into proposals to conserve the unique biodiversity of Mexican Douglas-fir and associated taxa. © 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.