Publicaciones

@article{Sarabia2018,

title = {Plant growth promotion traits of rhizosphere yeasts and their response to soil characteristics and crop cycle in maize agroecosystems},

author = {Marcela Sarabia and Saila Cazares and Antonio González-Rodríguez and Francisco Mora and Yazmín Carreón-Abud and John Larsen},

doi = {10.1016/j.rhisph.2018.04.002},

issn = {24522198},

year  = {2018},

date = {2018-01-01},

journal = {Rhizosphere},

volume = {6},

pages = {67-73},

publisher = {Elsevier B.V.},

abstract = {Yeasts are common soil inhabitants, but information about their ecology is limited. Here we examined the abundance of rhizosphere yeasts in six conventional maize agroecosystems in two different geographic areas in Mexico differing in soil characteristics and agricultural practices. In order to examine the plant growth promotion potential of maize rhizosphere yeasts a collection of yeast species was obtained, which were identified taxonomically in terms of sequencing of the D1D2 domain. Main results showed that yeasts were present in all maize fields during the complete growing cycle, though highest during flowering. The abundance of rhizosphere yeasts responded negatively to soil pH and amount of Mg. The maize rhizosphere yeast collection obtained included eight species from six genera with the Ascomycota species Meyerozyma guillermondii and Candida railenensis as the most frequent. Four out of the eight yeast species solubilised Ca3(PO4)2, whereas none of the yeasts solubilised FePO4. Maize plant growth was promoted after inoculation with Cryptococcus flavus and Solicoccozyma aeria in terms of shoot dry weight and with C. railenensis in terms of root dry weight, but only in combination with mineral P fertilisation. In conclusion, rhizosphere yeasts with plant growth promotion traits are common in maize agroecosystems, where soil physico-chemical characteristics and plant growth stage seem to determine their abundance.},

keywords = {Agroecology, Maize, Rhizosphere, Soil, Yeasts},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Spatial structure of genetic and chemical variation in native populations of the mile-a-minute weed Mikania micrantha},

author = {Ángel Eliezer Bravo-Monzón and Antonio González-Rodríguez and Francisco Javier Espinosa-García},

doi = {10.1016/j.bse.2017.11.008},

issn = {03051978},

year  = {2018},

date = {2018-01-01},

journal = {Biochemical Systematics and Ecology},

volume = {76},

pages = {23-31},

publisher = {Elsevier Ltd},

abstract = {We examined the spatial distribution and potential relationship of genetic and volatile terpenoid diversity in 13 Mexican populations of Mikania micrantha (Asteraceae) from the Atlantic and Pacific watersheds using six specific microsatellites. A low genetic diversity was observed in all populations (HE = 0.00–0.37), which may be attributed to clonal reproduction and/or their marginal location relative to the whole species distribution in the Americas. We found a significant genetic differentiation between regions, and more genetic structure in Atlantic populations where a Mantel test also showed a pattern of isolation by distance (r2 = 0.478},

keywords = {Asteraceae, DNA, Invasive species biocontrol, Microsatellites, Population genetics, Terpenoids},

pubstate = {published},

tppubtype = {article}

}

@article{Hipp2018,

title = {Sympatric parallel diversification of major oak clades in the Americas and the origins of Mexican species diversity},

author = {Andrew L. Hipp and Paul S. Manos and Antonio González-Rodríguez and Marlene Hahn and Matthew Kaproth and John D. McVay and Susana Valencia Avalos and Jeannine Cavender-Bares},

doi = {10.1111/nph.14773},

issn = {14698137},

year  = {2018},

date = {2018-01-01},

journal = {New Phytologist},

volume = {217},

issue = {1},

pages = {439-452},

publisher = {Blackwell Publishing Ltd},

abstract = {Oaks (Quercus, Fagaceae) are the dominant tree genus of North America in species number and biomass, and Mexico is a global center of oak diversity. Understanding the origins of oak diversity is key to understanding biodiversity of northern temperate forests. A phylogenetic study of biogeography, niche evolution and diversification patterns in Quercus was performed using 300 samples, 146 species. Next-generation sequencing data were generated using the restriction-site associated DNA (RAD-seq) method. A time-calibrated maximum likelihood phylogeny was inferred and analyzed with bioclimatic, soils, and leaf habit data to reconstruct the biogeographic and evolutionary history of the American oaks. Our highly resolved phylogeny demonstrates sympatric parallel diversification in climatic niche, leaf habit, and diversification rates. The two major American oak clades arose in what is now the boreal zone and radiated, in parallel, from eastern North America into Mexico and Central America. Oaks adapted rapidly to niche transitions. The Mexican oaks are particularly numerous, not because Mexico is a center of origin, but because of high rates of lineage diversification associated with high rates of evolution along moisture gradients and between the evergreen and deciduous leaf habits. Sympatric parallel diversification in the oaks has shaped the diversity of North American forests.},

keywords = {American oaks, convergence, niche evolution, phylogeny, Quercus, restriction site-associated DNA sequencing (RAD-seq), sympatric parallel diversification, woody plants},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Anthropogenic dispersion of selected germplasm creates a geographic mosaic of contrasting maternal lineages in Crescentia cujete from Mesoamerica},

author = {Xitlali Aguirre-Dugua and Jesús Llanderal-Mendoza and Antonio González-Rodríguez and Luis E. Eguiarte and Alejandro Casas},

doi = {10.1007/s11295-018-1230-8},

issn = {16142950},

year  = {2018},

date = {2018-01-01},

journal = {Tree Genetics and Genomes},

volume = {14},

issue = {2},

publisher = {Springer Verlag},

abstract = {The modification of the genetic/phenotypic composition of plant populations through artificial selection occurs both through time and space. We analyzed the role of human dispersal on the geographic distribution of maternal lineages of Crescentia cujete in Mesoamerica. We sampled 28 homegarden (224 individuals) and 12 wild populations (159 individuals). Semi-structured interviews provided information on the origin of cultivated trees. Six chloroplast microsatellites allowed for the identification of 21 haplotypes, four of them exclusively in 83% of homegarden trees. Wild haplotypes from local C. cujete and Crescentia alata were found at low frequencies (17%) under cultivation. Cultivated and wild haplotypes constituted two different haplogroups. Accordingly, barriers to seed dispersal were detected among neighboring cultivated and wild populations. Recorded events of human dispersal of cuttings and seeds attaining up to > 200 km agreed with homegardens’ lower diversity (Nei’s h = 0.55, dropping to 0.32 when excluding wild haplotypes). Wild populations displayed high diversity (h = 0.71) and isolation by distance, in agreement with physiographic provinces. Our results support the native status of wild C. cujete and a Pre-Columbian introduction of cultivated lineages that generated a novel genetic mosaic superimposed on native maternal lineages. The results reveal the active role of farmers in maintaining the identity of cultivated lineages through time, while chloroplast capture from local congeners has increased the diversity of maternal lineages under cultivation. Additional data are needed on the origins of cultivated lineages, but our results contribute new insights into tree domestication in this center of crop diversity.},

keywords = {Bignoniaceae, Crescentia cujete, Homegarden, Mesoamerica, Perennial, Tree domestication},

pubstate = {published},

tppubtype = {article}

}

@article{Hipp2018b,

title = {Sympatric parallel diversification of major oak clades in the Americas and the origins of Mexican species diversity},

author = {Andrew L. Hipp and Paul S. Manos and Antonio González-Rodríguez and Marlene Hahn and Matthew Kaproth and John D. McVay and Susana Valencia Avalos and Jeannine Cavender-Bares},

doi = {10.1111/nph.14773},

issn = {14698137},

year  = {2018},

date = {2018-01-01},

journal = {New Phytologist},

volume = {217},

issue = {1},

pages = {439-452},

publisher = {Blackwell Publishing Ltd},

abstract = {Oaks (Quercus, Fagaceae) are the dominant tree genus of North America in species number and biomass, and Mexico is a global center of oak diversity. Understanding the origins of oak diversity is key to understanding biodiversity of northern temperate forests. A phylogenetic study of biogeography, niche evolution and diversification patterns in Quercus was performed using 300 samples, 146 species. Next-generation sequencing data were generated using the restriction-site associated DNA (RAD-seq) method. A time-calibrated maximum likelihood phylogeny was inferred and analyzed with bioclimatic, soils, and leaf habit data to reconstruct the biogeographic and evolutionary history of the American oaks. Our highly resolved phylogeny demonstrates sympatric parallel diversification in climatic niche, leaf habit, and diversification rates. The two major American oak clades arose in what is now the boreal zone and radiated, in parallel, from eastern North America into Mexico and Central America. Oaks adapted rapidly to niche transitions. The Mexican oaks are particularly numerous, not because Mexico is a center of origin, but because of high rates of lineage diversification associated with high rates of evolution along moisture gradients and between the evergreen and deciduous leaf habits. Sympatric parallel diversification in the oaks has shaped the diversity of North American forests.},

keywords = {American oaks, convergence, niche evolution, phylogeny, Quercus, restriction site-associated DNA sequencing (RAD-seq), sympatric parallel diversification, woody plants},

pubstate = {published},

tppubtype = {article}

}

@article{Ramirez-Toro2017,

title = {A Multicriteria Analysis for Prioritizing Areas for Conservation of Oaks (Fagaceae: Quercus) in Oaxaca, Southern Mexico},

author = {Wilfrido Ramírez-Toro and Andrés Torres-Miranda and Antonio González-Rodríguez and Eduardo Ruiz-Sanchez and Isolda Luna-Vega and Ken Oyama},

doi = {10.1177/1940082917714227},

issn = {19400829},

year  = {2017},

date = {2017-01-01},

journal = {Tropical Conservation Science},

volume = {10},

abstract = {Mexico has the fifth place among megadiverse countries, and the southern part of the country belongs to the Mesoamerican hotspot, where Oaxaca state has a very rich flora, related to its intricate topography. In this study, a multicriteria analysis (species richness, rareness, irreplaceability, turnover, and vulnerability) was used to prioritize conservation areas in Oaxaca, using as model system the genus Quercus (oaks), due to its high diversity and ecological importance. Our results indicate that the Sierra Madre de Oaxaca (SMOax) is the physiographic subprovince with the highest richness (38 species), rareness and irreplaceability of Quercus species, followed by the Montañas y Valles del Occidente (MVO; 29 species), the Sierra Madre del Sur (SMS; 25 species), and the Montañas y Valles del Centro (20 species). Areas that have retained most primary vegetation cover from 2000 to 2010 are mainly in the SMOax, in the Ixtlán district, and in the SMS, in the Miahuatlán district. On the other hand, MVO is the area with greater habitat disturbance, mainly in the Juxtlahuaca-Tlaxiaco districts. Oaxaca has numerous areas without official protection, named Indigenous Conservation and Community Areas, which play a central role as an alternative for conservation for 11 oak species. In conclusion, the priority conservation areas for the genus are mainly located in the SMOax and in the SMS. For white oaks, the semiarid area of Coixtlahuaca-Teposcolula-Nochitlán is important, while for the red oaks, the most important regions are the humid areas of Teotitlán, Sola de Vega, and Miahuatlán.},

keywords = {irreplaceability, Oaxaca, Quercus, rareness, species richness, turnover, vulnerability},

pubstate = {published},

tppubtype = {article}

}

@article{Rodriguez-Correa2017,

title = {Complex phylogeographic patterns indicate Central American origin of two widespread Mesoamerican Quercus (Fagaceae) species},

author = {Hernando Rodríguez-Correa and Ken Oyama and Mauricio Quesada and Eric J. Fuchs and Maura Quezada and Lilian Ferrufino and Susana Valencia-Ávalos and Alfredo Cascante-Marín and Antonio González-Rodríguez},

doi = {10.1007/s11295-017-1147-7},

issn = {16142950},

year  = {2017},

date = {2017-01-01},

journal = {Tree Genetics and Genomes},

volume = {13},

issue = {3},

publisher = {Tree Genetics & Genomes},

abstract = {The northern Neotropical region is characterized by a heterogeneous geological and climatic history. Recent studies have shown contrasting patterns regarding the role of geographic elements as barriers that could have determined phylogeographic structure in various species. Recently, the phylogeography and biogeography of Quercus species have been studied intensively, and the patterns observed so far suggest contrasting evolutionary histories for Neotropical species in comparison with their Holarctic relatives. The goal of this study was to describe the phylogeographic structure of two Neotropical oak species (Quercus insignis and Quercus sapotifolia) in the context of the geological and palaeoclimatic history of the northern Neotropics. Populations through the distribution range of both species were collected and characterized using nine chloroplast DNA microsatellite loci. Both oak species showed high levels of genetic diversity and strong phylogeographic structure. The distribution of genetic variation in Q. insignis suggested an influence of two major barriers, the Isthmus of Tehuantepec and the Nicaraguan Depression, while Q. sapotifolia exhibited a genetic structure defined by the heterogeneity of the Chortis highlands. The haplotype networks of both species indicated complex histories, suggesting that colonization from the Sierra Madre de Chiapas to central Mexico and from the north of the Nicaraguan Depression to the Costa Rican mountains may have occurred during different stages, and apparently more than one time. In conclusion, the phylogeographic structure of Neotropical oak species seems to be defined by a combination of geological and climatic events.},

keywords = {historical demography, Middle America, Neotropical trees, Palaeodistribution, Phylogeography},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Differentiation in the water-use strategies among oak species from central Mexico},

author = {Rafael Aguilar-Romero and Fernando Pineda-Garcia and Horacio Paz and Antonio González-Rodríguez and Ken Oyama},

doi = {10.1093/treephys/tpx033},

issn = {17584469},

year  = {2017},

date = {2017-01-01},

journal = {Tree Physiology},

volume = {37},

issue = {7},

pages = {915-925},

publisher = {Oxford University Press},

abstract = {Oak species (Fagaceae: Quercus) differ in their distribution at the landscape scale, specializing to a certain portion of environmental gradients. This suggests that functional differentiation favors habitat partitioning among closely related species. To elucidate the mechanisms of species coexistence in oak forests, we explored patterns of interspecific variation in functional traits involved in water-use strategies. We tested the hypothesis that oak species segregate along key trade-offs between xylem hydraulic efficiency and safety, and between hydraulic safety and drought avoidance capacity, leading to species niche partitioning across a gradient of aridity. To do so, we quantified biophysical and physiological traits in four red and five white oak species (sections Lobatae and Quercus, respectively) across an aridity gradient in central Mexico. We also explored the trade-offs guiding species differentiation, particularly between the drought tolerance versus water acquisition capacity, and determined whether the water-use strategy was associated with the portion of the environmental gradient that the species occupy. In a trait-by-trait analysis, we detected differences between white and red oak species. However, a larger part of the variation was explained at the species rather than at the section level. We detected two primary axes of trait covariation. The first exhibited differences between species with dense tissues and species with soft tissues (the tissue construction cost axis); however, the oak sections did not constitute separate groups, while the second suggested a trade-off between xylem resistance to cavitation and tree deciduousness. As expected, the water-use strategies of the species were related to the environment; oak species from arid areas had more deciduousness and a higher instantaneous water-use efficiency. In contrast, their humid counterparts had less deciduousness and had a xylem that was more resistant to embolisms. Altogether, these results suggest that aridity filters closely related species, resulting in habitat partitioning and niche divergence.},

keywords = {Aridity gradients, Biophysical traits, Functional trade-offs, Quercus, Water-use strategy},

pubstate = {published},

tppubtype = {article}

}

@article{Cuevas-Reyes2017,

title = {Effects of herbivory and mistletoe infection by Psittacanthus calyculatus on nutritional quality and chemical defense of Quercus deserticola along Mexican forest fragments},

author = {Pablo Cuevas-Reyes and Griselda Pérez-López and Yurixhi Maldonado-López and Antonio González-Rodríguez},

doi = {10.1007/s11258-017-0721-2},

issn = {15735052},

year  = {2017},

date = {2017-01-01},

journal = {Plant Ecology},

volume = {218},

issue = {6},

pages = {687-697},

abstract = {Mistletoes are parasitic plants that show effects that can parallel or contrast with those caused by herbivores to their host plants, particularly on aspects such as host biomass, resource allocation patterns, and interspecific interactions at the community level. In this study, we evaluated the potential synergistic effects of herbivory and infection by the mistletoe Psittacanthus calyculatus on nutritional quality and chemical defense of the white oak Quercus deserticola along forest fragments in Mexico. For this, we sampled leaves of parasitized oaks, unparasitized oaks and mistletoes at four forest fragments in the Cuitzeo basin, Michoacán state, Mexico, and measured herbivory levels and foliar water content, total nonstructural carbohydrates, phenols, flavonoids, and hydrolyzable tannins in each sample. Higher levels of infection by P. calyculatus were found in the smaller forest fragments, while foliar damage by herbivores was higher in larger forest fragments. At all sites, levels of herbivory were lower in the mistletoe than in both parasitized and unparasitized oaks. However, there was a positive relationship between herbivory levels in parasitized oaks and their mistletoes. Also, foliar water content and total phenol concentration were positively correlated between the oaks and the mistletoes. The results suggest that herbivory levels in parasitized hosts and mistletoes depend on the close physiological interaction between the nutritional quality and the chemical defense of the two plants involved. This is one of the few studies analyzing the chemical ecology of the interaction between plant hosts and plant parasites.},

keywords = {Chemical defense, Forest fragmentation, Herbivory, Mistletoes, Nutritional quality, Plant–plant interactions},

pubstate = {published},

tppubtype = {article}

}

@article{Martinez-Diaz2017,

title = {Fatty Acid Diversity is Not Associated with Neutral Genetic Diversity in Native Populations of the Biodiesel Plant Jatropha curcas L.},

author = {Yesenia Martínez-Díaz and Antonio González-Rodríguez and Héctor Rómulo Rico-Ponce and Víctor Rocha-Ramírez and Isidro Ovando-Medina and Francisco J. Espinosa-García},

doi = {10.1002/cbdv.201600188},

issn = {16121880},

year  = {2017},

date = {2017-01-01},

journal = {Chemistry and Biodiversity},

volume = {14},

issue = {1},

abstract = {Jatropha curcas L. (Euphorbiaceae) is a shrub native to Mexico and Central America, which produces seeds with a high oil content that can be converted to biodiesel. The genetic diversity of this plant has been widely studied, but it is not known whether the diversity of the seed oil chemical composition correlates with neutral genetic diversity. The total seed oil content, the diversity of profiles of fatty acids and phorbol esters were quantified, also, the genetic diversity obtained from simple sequence repeats was analyzed in native populations of J. curcas in Mexico. Using the fatty acids profiles, a discriminant analysis recognized three groups of individuals according to geographical origin. Bayesian assignment analysis revealed two genetic groups, while the genetic structure of the populations could not be explained by isolation-by-distance. Genetic and fatty acid profile data were not correlated based on Mantel test. Also, phorbol ester content and genetic diversity were not associated. Multiple linear regression analysis showed that total oil content was associated with altitude and seasonality of temperature. The content of unsaturated fatty acids was associated with altitude. Therefore, the cultivation planning of J. curcas should take into account chemical variation related to environmental factors.},

keywords = {Biodiesel quality, genetic structure, Jatropha curcas L., Jatropha plantation planning, Phorbol ester, Total oil content},

pubstate = {published},

tppubtype = {article}

}

@article{Cortes-Flores2017,

title = {Flowering phenology, growth forms, and pollination syndromes in tropical dry forest species: Influence of phylogeny and abiotic factors},

author = {Jorge Cortés-Flores and Karenbeatriz Hernández-Esquivel and Antonio González-Rodríguez and Guillermo Ibarra-Manríquez},

doi = {10.3732/ajb.1600305},

issn = {00029122},

year  = {2017},

date = {2017-01-01},

journal = {American Journal of Botany},

volume = {104},

issue = {1},

pages = {39-49},

abstract = {PREMISE OF THE STUDY: Analyses of the influence of temporal variation in abiotic factors on flowering phenology of tropical dry forest species have not considered the possible response of species with different growth forms and pollination syndromes, while controlling for phylogenetic relationships among species. Here, we investigated the relationship between flowering phenology, abiotic factors, and plant functional attributes, while controlling for phylogenetic relationship among species, in a dry forest community in Mexico. METHODS: We characterized flowering phenology (time and duration) and pollination syndromes of 55 tree species, 49 herbs, 24 shrubs, 15 lianas, and 11 vines. We tested the influence of pollination syndrome, growth form, and abiotic factors on flowering phenology using phylogenetic generalized least squares. KEY RESULTS: We found a relationship between flowering duration and time. Growth form was related to flowering time, and the pollination syndrome had a more significant relationship with flowering duration. Flowering time variation in the community was explained mainly by abiotic variables, without an important phylogenetic effect. Flowering time in lianas and trees was negatively and positively correlated with daylength, respectively. CONCLUSIONS: Functional attributes, environmental cues, and phylogeny interact with each other to shape the diversity of flowering patterns. Phenological differentiation among species groups revealed multiples strategies associated with growth form and pollination syndromes that can be important for understanding species coexistence in this highly diverse plant community.},

keywords = {Balsas river basin, Flowering duration, Flowering time, Phylogenetic signal},

pubstate = {published},

tppubtype = {article}

}

@article{Oyama2017,

title = {Gene flow interruption in a recently human-modified landscape: The value of isolated trees for the maintenance of genetic diversity in a Mexican endemic red oak},

author = {Ken Oyama and María Luisa Herrera-Arroyo and Víctor Rocha-Ramírez and Julieta Benítez-Malvido and Eduardo Ruiz-Sánchez and Antonio González-Rodríguez},

url = {http://dx.doi.org/10.1016/j.foreco.2017.01.018},

doi = {10.1016/j.foreco.2017.01.018},

issn = {03781127},

year  = {2017},

date = {2017-01-01},

journal = {Forest Ecology and Management},

volume = {390},

pages = {27-35},

publisher = {Elsevier B.V.},

abstract = {Gene flow within and among populations is an important factor to maintain genetic cohesiveness and diversity across landscapes. Nowadays, human land use has led to a large forest conversion, creating many fragmented areas where remnant trees play an important role in conserving biodiversity. In this study, we analyzed the effects of a recent anthropogenic forest fragmentation on the genetic diversity and genetic heterogeneity of pollen pools accepted by individuals of the red oak Quercus castanea growing in forest patches and as isolated trees in central Mexico. Pollen movement was also evaluated by the analysis of outcrossing rates using seven nuclear microsatellites. We assumed that adult trees are remnants of the populations that existed previous to the forest fragmentation, while progenies of these trees are the result of recent reproductive events occurring after the fragmentation. We found high genetic diversity in both adult trees and progenies, even though progenies of isolated trees showed a significant reduction in heterozygosity as compared to their mother trees. However, the results of TWOGENER and mating system analyses indicated similar numbers of pollen donors in the progenies of mother trees from fragments and in isolated trees. Overall, our results suggest that gene flow is still extensive among forest fragments and isolated trees, conferring them a great value for the conservation of genetic diversity and connectivity.},

keywords = {Forest fragmentation, gene flow, Genetic diversity, Isolated trees, Outcrossing rates, Quercus castanea},

pubstate = {published},

tppubtype = {article}

}

@article{Sanabria-Urban2017,

title = {Integrative taxonomy reveals cryptic diversity in neotropical grasshoppers: Taxonomy, phylogenetics, and evolution of the genus Sphenarium Charpentier, 1842 (Orthoptera: Pyrgomorphidae)},

author = {Salomón Sanabria-Urbán and Hojun Song and Ken Oyama and Antonio González-Rodríguez and Raúl Cueva Del Castillo},

doi = {10.11646/zootaxa.4274.1.1},

issn = {11755334},

year  = {2017},

date = {2017-01-01},

journal = {Zootaxa},

volume = {4274},

issue = {1},

pages = {1-86},

abstract = {The genus Sphenarium Charpentier, 1842 comprises the most diverse group of the New World Pyrgomorphidae. These grasshoppers show an extensive variation in external morphology, and are culturally and economically important for Mexican people since pre-Hispanic times. Nevertheless, the taxonomy of Sphenarium has been chaotic and remained incompletely resolved until now. Following an integrative taxonomic framework, we infer the number of species in this genus by species delimitation based on morphological, phylogenetic, and geographic information. Based on our results, we revise the genus and redefine 9 species and describe 8 new species (S. adelinae sp.n., S. crypticum sp.n., S. infernalis sp.n., S. miztecum sp.n., S. occidentalis sp.n., S. tarascum sp.n., S. totonacum sp.n. and S. zapotecum sp.n.). Moreover, we update the knowledge of the evolutionary relationships and biogeographic patterns of Sphenarium species. Our results also demonstrate the importance of historic geological and climatic events on the lineage diversification of this genus. Different levels of morphological and genetic differentiation among species suggest a complex interplay between evolutionary forces during the evolution of these neotropical grasshoppers.},

keywords = {integrative taxonomy, Male genitalia morphology, Molecular phylogenetics, Neotropics, Pyrgomorphidae, Species phylogeny, Sphenarium},

pubstate = {published},

tppubtype = {article}

}

@article{Balvino-Olvera2017,

title = {Latitudinal structured populations of the Mexican wild squash Cucurbita argyrosperma subsp. sororia revealed by microsatellite markers},

author = {Francisco J. Balvino-Olvera and Karman F. Sánchez-Gómez and Jorge Arturo Lobo and Germán Avila-Sakar and Rogelio Cruz-Reyes and Gumersindo Sánchez-Montoya and Yvonne Herrerías-Diego and Antonio González-Rodríguez and Mauricio Quesada},

doi = {10.1071/CP17341},

issn = {18365795},

year  = {2017},

date = {2017-01-01},

journal = {Crop and Pasture Science},

volume = {68},

issue = {9},

pages = {850-858},

abstract = {Crop wild relatives represent an important agronomic resource for crop improvement and biodiversity conservation. The wild squash Cucurbita argyrosperma subsp. sororia. (Cucurbitaceae) has been considered the wild ancestor of cultivated forms of C. argyrosperma. In order to characterise the geographic patterns of genetic variation in this wild cucurbit and to identify priority areas for conservation, we analysed the genetic diversity and structure of natural populations along the Mexican Pacific coast. By using 14 polymorphic microsatellites, we genotyped 378 individuals sampled from 61 locations. Standard population genetics analyses and group testing were conducted on the genotypes with the aid of principal coordinate analysis and Bayesian analysis. Overall, we found an average of 12.3 alleles per locus and an expected heterozygosity of 0.756. We found greater genetic diversity in southern populations. The fixation index was 0.113, suggesting a mixed mating system. The Mantel test revealed a minor distance effect on genetic differentiation between individuals (r≤0.321). Finally, we found three main groups of populations arranged in a mostly latitudinal pattern, from Sinaloa (north-west) to Oaxaca-Guerrero (south-east). The greater genetic diversity and heterogeneity among southern populations (Guerrero-Oaxaca), suggests that this region is an important centre of diversity of this wild squash with important implications for conservation.},

keywords = {gene flow, genetic structure, plant mating systems, plant reproduction, SSR's, wild and cultivated species, wild gourds},

pubstate = {published},

tppubtype = {article}

}

@article{Arroyo-Rodriguez2017,

title = {Parent-parent and parent-offspring distances in Spondias radlkoferi seeds suggest long-distance pollen and seed dispersal: Evidence from latrines of the spider monkey},

author = {Víctor Arroyo-Rodríguez and Esther Aguilar-Barajas and Arturo González-Zamora and Víctor Rocha-Ramírez and Antonio González-Rodríguez and Ken Oyama},

doi = {10.1017/S0266467417000050},

issn = {14697831},

year  = {2017},

date = {2017-01-01},

journal = {Journal of Tropical Ecology},

volume = {33},

issue = {2},

pages = {95-106},

abstract = {Pollen and seed dispersal are key ecological processes, directly impacting the spatial distribution, abundance and genetic structure of plant populations; yet, pollen- and seed-dispersal distances are poorly known. We used molecular markers to identify the parental origin (n = 152 adult trees) of 177 Spondias radlkoferi (Anacardiaceae) seeds deposited by the spider monkey (Ateles geoffroyi) in latrines located beneath 17 sleeping-trees in two continuous forest sites (CF) and two forest fragments (FF) in the Lacandona rain forest, Mexico. We estimated mean parent-offspring (PO) distances per latrine and, for those seeds (54% of seeds) with more than one candidate parent (i.e. the potential maternal and parental parents), we also estimated parent-parent (PP) distances per latrine, and tested if PO and PP distances differed between forest types. Global PO and PP distances per latrine averaged 682 m (range = 83-1741 m) and 610 m (range = 74-2339 m), respectively, and did not differ significantly between CF and FF. This suggests that pollen dispersal is extensive in both forest types and that long seed dispersal distances (>100 m) are common, thus supporting the hypothesis that the spider monkey is an effective seed disperser of S. radlkoferi in continuous and fragmented forests.},

keywords = {Ateles, Forest fragmentation, Lacandona, Parental analysis, Pollen dispersal, Seed dispersal effectiveness},

pubstate = {published},

tppubtype = {article}

}

@article{Letelier2017,

title = {Patterns of composition, richness and phylogenetic diversity of woody plant communities of Quillaja saponaria Molina (Quillajaceae) in the Chilean sclerophyllous forest},

author = {Luis Letelier and Aly Valderrama and Alexandra Stoll and Rolando García-Gonzáles and Antonio González-Rodríguez},

doi = {10.4067/s0717-66432017005000105},

issn = {0717-6643},

year  = {2017},

date = {2017-01-01},

journal = {Gayana. Botánica},

volume = {74},

issue = {ahead},

pages = {0-0},

abstract = {El Bosque Esclerófilo es uno de los tipos más representativos de las comunidades de plantas leñosas en el centro de Chile, donde Quillaja saponaria es considerada una de las especies más importantes. En este trabajo se analizaron los principales factores que explican la distribución geográfica de la variación en la composición, riqueza y diversidad filogenética de las comunidades de plantas leñosas del Bosque Esclerófilo de Chile, donde Q. saponaria está presente. Se llevaron a cabo censos de vegetación de árboles y arbustos en treinta y nueve sitios desde los 30° a los 38° de latitud sur en el bioma mediterráneo de Chile. Se calcularon la composición, riqueza, diversidad alfa y la diversidad filogenética de las comunidades y se asociaron con variables espaciales (latitud, longitud y altitud), climáticas (temperatura media anual, precipitación anual, aridez), y variables de perturbación (tipo de matriz de la vegetación adyacente) usando modelos de regresión múltiple. Se identificaron sesenta taxones, distribuidos en 29 familias, incluyendo 23 árboles y 37 arbustos. Se encontró un efecto significativo del tipo de matriz de vegetación adyacente (es decir, tierras agrícolas, plantaciones forestales comerciales o bosques naturales) en la diversidad y composición de las comunidades estudiadas. También se encontraron efectos significativos de la latitud sobre la diversidad; y de la altitud, latitud y temperatura media anual sobre la composición de las comunidades, la diversidad filogenética sólo se asoció con la altitud y la latitud. En conclusión, la diversidad, composición y patrones de estructura filogenética se asocian con variables espaciales y climáticas; y las perturbaciones antropogénicas también han provocado cambios importantes en estas comunidades.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Perspectivas de la Ecología Molecular en un país megadiverso},

author = {Hernando Rodríguez-Correa and Antonio González-Rodríguez and Ken Oyama},

doi = {10.1016/j.rmb.2017.10.002},

issn = {18703453},

year  = {2017},

date = {2017-01-01},

journal = {Revista Mexicana de Biodiversidad},

volume = {88},

pages = {3-13},

publisher = {Universidad Nacional Autonoma de Mexico},

abstract = {A review of studies on Molecular Ecology in Mexico is presented. Between 1990 and 2016, we identified 656 published studies on Molecular Ecology. The best represented subject areas were population genetics (35.3% of the studies) and phylogeography (30.3%), while emergent fields in molecular ecology, such as landscape genomics, DNA-based trophic ecology, and kinship, parentage and behavior were scarcely represented. Most frequently studied systems were animals (58.5%) and plants (32.5%), while other organisms such as fungi, protozoa and bacteria have received much less attention. In general, a considerable development of Molecular Ecology is observable in our country. However, for this tendency to continue it will be necessary to incorporate more extensively technological advances such as next generation sequencing and bioinformatics, as well as to venture into the emergent areas of the discipline.},

keywords = {Conservation biology, gene flow, Genomics, Molecular markers, Next generation sequencing, Phylogeography, Population genetics},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Phylogeography and population differentiation in the Psittacanthus calyculatus (Loranthaceae) mistletoe: a complex scenario of climate–volcanism interaction along the Trans-Mexican Volcanic Belt},

author = {María José Pérez-Crespo and Juan Francisco Ornelas and Antonio González-Rodríguez and Eduardo Ruiz-Sanchez and Antonio Acini Vásquez-Aguilar and Santiago Ramírez-Barahona},

doi = {10.1111/jbi.13070},

issn = {13652699},

year  = {2017},

date = {2017-01-01},

journal = {Journal of Biogeography},

volume = {44},

issue = {11},

pages = {2501-2514},

publisher = {Blackwell Publishing Ltd},

abstract = {Aim: The formation of the Trans-Mexican Volcanic Belt (TMVB) played an important role in driving inter- and intraspecific diversification at high elevations. However, Pleistocene climate changes and ecological factors might also contribute to plant genetic structuring along the volcanic belt. Here, we analysed phylogeographical patterns of the parrot-mistletoe Psittacanthus calyculatus to determine the relative contribution of these different factors. Location: Trans-Mexican Volcanic Belt. Methods: Using nuclear and chloroplast DNA sequence data for 370 individuals, we investigate the genetic differentiation of 35 populations across the species range. We conducted phylogenetic, population and spatial genetic analyses of P. calyculatus sequences along with ecological niche modelling and Bayesian inference methods to gain insight into the structuring of genetic variation of these populations. Results: Our analyses revealed population structure with three genetic groups corresponding to individuals from Oaxaca and those from the central-eastern and western TMVB regions. A significant genetic signal of demographic expansion, an east-to-west expansion predicted by species distribution modelling, and approximate Bayesian computation analyses strongly supported a scenario of habitat isolation and invasion of TMVB by P. calyculatus during the late-Pleistocene. Main conclusions: The genetic differentiation of P. calyculatus may be explained by the combined effects of (1) geographical isolation linked to the effects of the glacial/interglacial cycles and environmental factors, driving genetic differentiation from congeners into more xeric vegetation and (2) the invasion of TMVB from east to west, suggesting a role for both colonization and glacial/interglacial cycles models.},

keywords = {Loranthaceae, Mesoamerica, Mexico, Mistletoes, Phylogeography, Pleistocene, Psittacanthus, Trans-Mexican Volcanic Belt},

pubstate = {published},

tppubtype = {article}

}

@article{Ramirez-Barahona2017,

title = {The influence of climatic niche preferences on the population genetic structure of a mistletoe species complex},

author = {Santiago Ramírez-Barahona and Clementina González and Antonio González-Rodríguez and Juan Francisco Ornelas},

doi = {10.1111/nph.14471},

issn = {14698137},

year  = {2017},

date = {2017-01-01},

journal = {New Phytologist},

volume = {214},

issue = {4},

pages = {1751-1761},

abstract = {The prevalent view on genetic structuring in parasitic plants is that host-race formation is caused by varying degrees of host specificity. However, the relative importance of ecological niche divergence and host specificity to population differentiation remains poorly understood. We evaluated the factors associated with population differentiation in mistletoes of the Psittacanthus schiedeanus complex (Loranthaceae) in Mexico. We used genetic data from chloroplast sequences and nuclear microsatellites to study population genetic structure and tested its association with host preferences and climatic niche variables. Pairwise genetic differentiation was associated with environmental and host preferences, independent of geography. However, environmental predictors appeared to be more important than host preferences to explain genetic structure, supporting the hypothesis that the occurrence of the parasite is largely determined by its own climatic niche and, to a lesser degree, by host specificity. Genetic structure is significant within this mistletoe species complex, but the processes associated with this structure appear to be more complex than previously thought. Although host specificity was not supported as the major determinant of population differentiation, we consider this to be part of a more comprehensive ecological model of mistletoe host-race formation that incorporates the effects of climatic niche evolution.},

keywords = {ecological niche, host-race formation, landscape genetics, Microsatellites, parasites},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Fatty Acid Diversity is Not Associated with Neutral Genetic Diversity in Native Populations of the Biodiesel Plant Jatropha curcas L.},

author = {Yesenia Martínez-Díaz and Antonio González-Rodríguez and Héctor Rómulo Rico-Ponce and Víctor Rocha-Ramírez and Isidro Ovando-Medina and Francisco J. Espinosa-García},

doi = {10.1002/cbdv.201600188},

issn = {16121880},

year  = {2017},

date = {2017-01-01},

journal = {Chemistry and Biodiversity},

volume = {14},

issue = {1},

publisher = {Wiley-VCH Verlag},

abstract = {Jatropha curcas L. (Euphorbiaceae) is a shrub native to Mexico and Central America, which produces seeds with a high oil content that can be converted to biodiesel. The genetic diversity of this plant has been widely studied, but it is not known whether the diversity of the seed oil chemical composition correlates with neutral genetic diversity. The total seed oil content, the diversity of profiles of fatty acids and phorbol esters were quantified, also, the genetic diversity obtained from simple sequence repeats was analyzed in native populations of J. curcas in Mexico. Using the fatty acids profiles, a discriminant analysis recognized three groups of individuals according to geographical origin. Bayesian assignment analysis revealed two genetic groups, while the genetic structure of the populations could not be explained by isolation-by-distance. Genetic and fatty acid profile data were not correlated based on Mantel test. Also, phorbol ester content and genetic diversity were not associated. Multiple linear regression analysis showed that total oil content was associated with altitude and seasonality of temperature. The content of unsaturated fatty acids was associated with altitude. Therefore, the cultivation planning of J. curcas should take into account chemical variation related to environmental factors.},

keywords = {Biodiesel quality, genetic structure, Jatropha curcas L., Jatropha plantation planning, Phorbol ester, Total oil content},

pubstate = {published},

tppubtype = {article}

}

@article{Perez-Crespo2016,

title = {Reproductive biology and nectar production of the Mexican endemic Psittacanthus auriculatus (Loranthaceae), a hummingbird-pollinated mistletoe},

author = {M. J. Pérez-Crespo and J. Francisco Ornelas and S. Martén-Rodríguez and A. González-Rodríguez and C. Lara},

doi = {10.1111/plb.12365},

issn = {14388677},

year  = {2016},

date = {2016-01-01},

journal = {Plant Biology},

volume = {18},

issue = {1},

pages = {73-83},

abstract = {Many mistletoe species produce 'bird'-pollinated flowers; however, the reproductive biology of the majority of these species has not been studied. Psittacanthus auriculatus is a Mexican endemic mistletoe, most common in open, dry mesquite grassland. Knowledge of the reproductive biology of P. auriculatus is essential for understanding species formation and diversification of Psittacanthus mistletoes, but it is currently poorly understood. Thus, we studied floral biology and phenology, nectar production and breeding system and pollination of this species. The hermaphroditic red-pink flowers open from the middle to the tip and petals are curly, but remain partially fused forming a floral tube of ca. 20-mm long. Flowers are partially protandrous, produce large amounts of nectar, last 2 days, and stigma receptivity is highest during the second day. We recorded hummingbirds (Cynanthus latirostris, Hylocharis leucotis, Amazilia beryllina, A. violiceps, Calothorax lucifer, Archilochus colubris) and less commonly butterflies (Agraulis vanillae, Anteos clorinde, Papilio multicaudatus, Phocides urania, Phoebis sennae) as floral visitors. P. auriculatus flowers are self-compatible. However, this mistletoe is an obligate animal-pollinated species, as the sensitive stigma avoids self-pollination. Under natural conditions, reproductive success was higher than in manually selfed or cross-pollinated flowers, likely due to the traplining foraging behaviour of hummingbirds. We suggest that the apparent efficient foraging behaviour of hummingbirds maintains gene flow among P. auriculatus, promoting outcrossing.},

keywords = {Floral biology, Hummingbird pollination, Loranthaceae, pollination syndromes, Psittacanthus, Trochilidae},

pubstate = {published},

tppubtype = {article}

}

@article{Perez-Lopez2016,

title = {Effects of plant hybridization on the structure and composition of a highly rich community of cynipid gall wasps: the case of the oak hybrid complex Quercus magnoliifolia x Quercus resinosa in Mexico},

author = {Griselda Pérez-López and Antonio González-Rodríguez and Ken Oyama and Pablo Cuevas-Reyes},

doi = {10.1007/s10531-016-1074-1},

issn = {15729710},

year  = {2016},

date = {2016-01-01},

journal = {Biodiversity and Conservation},

volume = {25},

issue = {4},

pages = {633-651},

abstract = {The richness and composition of herbivore communities can be influenced by the genetic variation of host plants. Hybrid plant populations are ideal to test these effects because they usually harbor high genetic variation and display a mosaic of phenotypic characters. The goal of this study was to examine the effect of hybridization between two Mexican white oaks, Q. magnoliifolia and Q. resinosa, on the composition and diversity of the associated cynipid gall wasp community. We used eight nuclear microsatellite markers to genotype 150 oak individuals sampled at three different altitudes at the Tequila volcano and conducted monthly samplings of galls in each individual over the course of 2 years. A Bayesian assignment analysis indicated genetic admixture between the two oak species at the study site and allowed classifying individuals as Q. magnoliifolia, Q. resinosa or hybrids. Gall morphospecies richness was significantly higher in the hybrids, intermediate in Q. magnoliifolia and lower in Q. resinosa. Overall, 48 different gall morphospecies were found, with 21 of them being shared among the three groups of plants, 13 between two groups of plants, and 14 were unique to one group of plants, with eight of these being found in hybrids. Several of the shared galls showed differences in abundance among plant groups. Therefore, genetic structure in this oak complex significantly influences the diversity and composition of the associated gall wasp community, and hybrid individuals are probably acting as potential sinks and bridges for the colonization of plant hosts by these highly specialized insect species.},

keywords = {Bayesian assignment, Cynipids, Fagaceae, Hybrid sink hypothesis, Microsatellites},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Geographic structure of genetic and phenotypic variation in the hybrid zone between Quercus affinis and Q. laurina in Mexico},

author = {S. Ramos-Ortiz and K. Oyama and H. Rodríguez-Correa and A. González-Rodríguez},

doi = {10.1111/1442-1984.12109},

issn = {14421984},

year  = {2016},

date = {2016-01-01},

journal = {Plant Species Biology},

volume = {31},

issue = {3},

pages = {219-232},

publisher = {Blackwell Publishing},

abstract = {Analyzing the structure of hybrid zones is important for inferring their origin, dynamics and evolutionary significance. We examined the geographic structure of phenotypic and genetic variation in the contact zone between two Mexican red oaks, Quercus affinis and Q. laurina. A total of 105 individuals from seven populations were sampled along a 600-km latitudinal gradient representing the distribution area of the two species and their contact zone. Individuals were genotyped for nine nuclear and four chloroplast DNA microsatellite loci (ncSSR and cpSSR, respectively), and characterized for several leaf and acorn traits. The cpSSR data revealed extensive haplotype sharing among populations of the two species, while a Bayesian assignment analysis based on ncSSRs identified two main genetic groups, each corresponding to one of the species, and two populations in the contact zone showing evidence of admixture. The proportion of genetic ancestry in the populations was strongly associated with latitude and showed a pattern of variation with the shape of a narrow sigmoidal cline. The variation in three of the seven phenotypic traits was partially congruent with molecular variation, while the other traits did not conform to a geographic cline but instead were correlated with environmental variables. In conclusion, the hybrid zone between the two oak species has some of the characteristics of a tension zone, but heterogeneous variation across traits suggests differential introgression and the action of extrinsic selection.},

keywords = {cline, hybrid zone, introgression, Microsatellites, morphologic variation, Quercus},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Reproductive biology and nectar production of the Mexican endemic Psittacanthus auriculatus (Loranthaceae), a hummingbird-pollinated mistletoe},

author = {M. J. Pérez-Crespo and J. Francisco Ornelas and S. Martén-Rodríguez and A. González-Rodríguez and C. Lara},

doi = {10.1111/plb.12365},

issn = {14388677},

year  = {2016},

date = {2016-01-01},

journal = {Plant Biology},

volume = {18},

issue = {1},

pages = {73-83},

publisher = {Blackwell Publishing Ltd},

abstract = {Many mistletoe species produce 'bird'-pollinated flowers; however, the reproductive biology of the majority of these species has not been studied. Psittacanthus auriculatus is a Mexican endemic mistletoe, most common in open, dry mesquite grassland. Knowledge of the reproductive biology of P. auriculatus is essential for understanding species formation and diversification of Psittacanthus mistletoes, but it is currently poorly understood. Thus, we studied floral biology and phenology, nectar production and breeding system and pollination of this species. The hermaphroditic red-pink flowers open from the middle to the tip and petals are curly, but remain partially fused forming a floral tube of ca. 20-mm long. Flowers are partially protandrous, produce large amounts of nectar, last 2 days, and stigma receptivity is highest during the second day. We recorded hummingbirds (Cynanthus latirostris, Hylocharis leucotis, Amazilia beryllina, A. violiceps, Calothorax lucifer, Archilochus colubris) and less commonly butterflies (Agraulis vanillae, Anteos clorinde, Papilio multicaudatus, Phocides urania, Phoebis sennae) as floral visitors. P. auriculatus flowers are self-compatible. However, this mistletoe is an obligate animal-pollinated species, as the sensitive stigma avoids self-pollination. Under natural conditions, reproductive success was higher than in manually selfed or cross-pollinated flowers, likely due to the traplining foraging behaviour of hummingbirds. We suggest that the apparent efficient foraging behaviour of hummingbirds maintains gene flow among P. auriculatus, promoting outcrossing.},

keywords = {Floral biology, Hummingbird pollination, Loranthaceae, pollination syndromes, Psittacanthus, Trochilidae},

pubstate = {published},

tppubtype = {article}

}