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dc.contributor.author Bracco, Mariana
dc.contributor.author Cascales, Jimena
dc.contributor.author Camara Hernandez, Julian Alberto
dc.contributor.author Poggio, Lidia
dc.contributor.author Gottlieb, Alexandra Marina
dc.contributor.author Lia, Verónica Viviana
dc.date.available 2018-09-17T17:16:10Z
dc.date.issued 2016-08
dc.identifier.citation Bracco, Mariana; Cascales, Jimena; Camara Hernandez, Julian Alberto; Poggio, Lidia; Gottlieb, Alexandra Marina; et al.; Dissecting maize diversity in lowland South America: Genetic structure and geographic distribution models; BioMed Central; BMC Plant Biology; 16; 1; 8-2016; 1-13
dc.identifier.issn 1471-2229
dc.identifier.uri http://hdl.handle.net/11336/59886
dc.description.abstract Background: Maize landraces from South America have traditionally been assigned to two main categories: Andean and Tropical Lowland germplasm. However, the genetic structure and affiliations of the lowland gene pools have been difficult to assess due to limited sampling and the lack of comparative analysis. Here, we examined SSR and Adh2 sequence variation in a diverse sample of maize landraces from lowland middle South America, and performed a comprehensive integrative analysis of population structure and diversity including already published data of archaeological and extant specimens from the Americas. Geographic distribution models were used to explore the relationship between environmental factors and the observed genetic structure. Results: Bayesian and multivariate analyses of population structure showed the existence of two previously overlooked lowland gene pools associated with Guaraní indigenous communities of middle South America. The singularity of this germplasm was also evidenced by the frequency distribution of microsatellite repeat motifs of the Adh2 locus and the distinct spatial pattern inferred from geographic distribution models. Conclusion: Our results challenge the prevailing view that lowland middle South America is just a contact zone between Andean and Tropical Lowland germplasm and highlight the occurrence of a unique, locally adapted gene pool. This information is relevant for the conservation and utilization of maize genetic resources, as well as for a better understanding of environment-genotype associations.
dc.format application/pdf
dc.language.iso eng
dc.publisher BioMed Central
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject GENETIC DIVERSITY
dc.subject GEOGRAPHIC DISTRIBUTION MODELS
dc.subject GUARANÍ COMMUNITIES
dc.subject LOWLAND SOUTH AMERICA
dc.subject MAIZE LANDRACES
dc.subject.classification Otras Ciencias Biológicas
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Dissecting maize diversity in lowland South America: Genetic structure and geographic distribution models
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-09-14T13:17:57Z
dc.journal.volume 16
dc.journal.number 1
dc.journal.pagination 1-13
dc.journal.pais Reino Unido
dc.journal.ciudad Londres
dc.description.fil Fil: Bracco, Mariana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Cascales, Jimena. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Camara Hernandez, Julian Alberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.description.fil Fil: Poggio, Lidia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Gottlieb, Alexandra Marina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Lia, Verónica Viviana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title BMC Plant Biology
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1186/s12870-016-0874-5
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://bmcplantbiol.biomedcentral.com/articles/10.1186/s12870-016-0874-5
dc.conicet.fuente individual


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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)