Southern south American maize landraces : a source of phenotypic diversity

Autores
Dudzien, Tatiana Luján; Freilij, Damián; Defacio, Raquel Alicia; Fernandez, Mariana; Paniego, Norma Beatriz; Lia, Verónica Viviana; Dominguez, Pia Guadalupe
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Maize (Zea mays L.) is a globally important crop for food, feed, and industrial uses. Modern breeding increasingly targets traits beyond yield, including stress tolerance, nutritional quality, and pest resistance. Progress toward these goals is constrained by the narrow genetic diversity of commercial varieties, a consequence of the repeated use of a limited number of inbred lines. Maize landraces therefore represent valuable reservoirs of genetic and phenotypic diversity. Northern Argentina is one of the southernmost regions of maize landrace cultivation and comprises two main centers of diversity: Northeastern Argentina (NEA; <2000 m.a.s.l.) and Northwestern Argentina (NWA; >2000 m.a.s.l.). Despite their potential relevance, phenotypic characterization of these landraces remains limited, particularly for biochemical traits, which, although less visible, play key roles in biomass accumulation, defense against pathogens and herbivores, tolerance to environmental stress, and quality attributes such as flavor. Here, we evaluated 17 phenotypic traits, including morphological traits, leaf biochemical compounds (such as pigments, carbohydrates, and phenolics), and salt stress tolerance, in 19 maize landrace accessions from Northern Argentina. Substantial variation was detected across all traits, both within and among accessions, indicating that each accession harbors a distinct phenotypic profile. While no significant differences were observed between regions, redundancy analysis revealed associations between phenotypic variation and collection-site altitude. These findings highlight the value of Argentine maize landraces as sources of biochemical and stress-related traits and support their conservation and use in breeding programs aimed at broadening the genetic base of cultivated maize.
EEA Pergamino
Fil: Dudzien, Tatiana L. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Freilij, Damián. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Freilij, Damián. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas
Fil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina
Fil: Fernández, Mariana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina
Fil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas
Fil: Lia, Verónica Viviana. Universidad de Buenos Aires. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Lia, Verónica Viviana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Dominguez, Pia Guadalupe. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas
Fuente
BioRxiv : The preprint server for Biology (February 2026)
Materia
Maíz
Bioquímica
Tolerancia a la Sal
Variación Genética
Altitud
América del Sur
Maize
Biochemistry
Salt Tolerance
Genetic Variation
Altitude
South America
Maize Landrace
Variability
RDA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/26409
Acceder
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oai_identifier_str oai:localhost:20.500.12123/26409
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network_name_str INTA Digital (INTA)
spelling Southern south American maize landraces : a source of phenotypic diversityDudzien, Tatiana LujánFreilij, DamiánDefacio, Raquel AliciaFernandez, MarianaPaniego, Norma BeatrizLia, Verónica VivianaDominguez, Pia GuadalupeMaízBioquímicaTolerancia a la SalVariación GenéticaAltitudAmérica del SurMaizeBiochemistrySalt ToleranceGenetic VariationAltitudeSouth AmericaMaize LandraceVariabilityRDAMaize (Zea mays L.) is a globally important crop for food, feed, and industrial uses. Modern breeding increasingly targets traits beyond yield, including stress tolerance, nutritional quality, and pest resistance. Progress toward these goals is constrained by the narrow genetic diversity of commercial varieties, a consequence of the repeated use of a limited number of inbred lines. Maize landraces therefore represent valuable reservoirs of genetic and phenotypic diversity. Northern Argentina is one of the southernmost regions of maize landrace cultivation and comprises two main centers of diversity: Northeastern Argentina (NEA; <2000 m.a.s.l.) and Northwestern Argentina (NWA; >2000 m.a.s.l.). Despite their potential relevance, phenotypic characterization of these landraces remains limited, particularly for biochemical traits, which, although less visible, play key roles in biomass accumulation, defense against pathogens and herbivores, tolerance to environmental stress, and quality attributes such as flavor. Here, we evaluated 17 phenotypic traits, including morphological traits, leaf biochemical compounds (such as pigments, carbohydrates, and phenolics), and salt stress tolerance, in 19 maize landrace accessions from Northern Argentina. Substantial variation was detected across all traits, both within and among accessions, indicating that each accession harbors a distinct phenotypic profile. While no significant differences were observed between regions, redundancy analysis revealed associations between phenotypic variation and collection-site altitude. These findings highlight the value of Argentine maize landraces as sources of biochemical and stress-related traits and support their conservation and use in breeding programs aimed at broadening the genetic base of cultivated maize.EEA PergaminoFil: Dudzien, Tatiana L. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Freilij, Damián. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Freilij, Damián. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y TécnicasFil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; ArgentinaFil: Fernández, Mariana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; ArgentinaFil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y TécnicasFil: Lia, Verónica Viviana. Universidad de Buenos Aires. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Lia, Verónica Viviana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Dominguez, Pia Guadalupe. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y TécnicasBioRxiv2026-05-29T10:33:18Z2026-05-29T10:33:18Z2026-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/26409https://www.biorxiv.org/content/10.64898/2026.01.02.697242v2.fullhttps://doi.org/10.64898/2026.01.02.697242BioRxiv : The preprint server for Biology (February 2026)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repograntAgreement/INTA/2023-PD-L01-I085, Identificación y caracterización funcional de genes interés biotecnológico para la sostenibilidad productiva y ambientalinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2026-06-04T09:46:25Zoai:localhost:20.500.12123/26409instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-06-04 09:46:25.585INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Southern south American maize landraces : a source of phenotypic diversity
title Southern south American maize landraces : a source of phenotypic diversity
spellingShingle Southern south American maize landraces : a source of phenotypic diversity
Dudzien, Tatiana Luján
Maíz
Bioquímica
Tolerancia a la Sal
Variación Genética
Altitud
América del Sur
Maize
Biochemistry
Salt Tolerance
Genetic Variation
Altitude
South America
Maize Landrace
Variability
RDA
title_short Southern south American maize landraces : a source of phenotypic diversity
title_full Southern south American maize landraces : a source of phenotypic diversity
title_fullStr Southern south American maize landraces : a source of phenotypic diversity
title_full_unstemmed Southern south American maize landraces : a source of phenotypic diversity
title_sort Southern south American maize landraces : a source of phenotypic diversity
dc.creator.none.fl_str_mv Dudzien, Tatiana Luján
Freilij, Damián
Defacio, Raquel Alicia
Fernandez, Mariana
Paniego, Norma Beatriz
Lia, Verónica Viviana
Dominguez, Pia Guadalupe
author Dudzien, Tatiana Luján
author_facet Dudzien, Tatiana Luján
Freilij, Damián
Defacio, Raquel Alicia
Fernandez, Mariana
Paniego, Norma Beatriz
Lia, Verónica Viviana
Dominguez, Pia Guadalupe
author_role author
author2 Freilij, Damián
Defacio, Raquel Alicia
Fernandez, Mariana
Paniego, Norma Beatriz
Lia, Verónica Viviana
Dominguez, Pia Guadalupe
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Maíz
Bioquímica
Tolerancia a la Sal
Variación Genética
Altitud
América del Sur
Maize
Biochemistry
Salt Tolerance
Genetic Variation
Altitude
South America
Maize Landrace
Variability
RDA
topic Maíz
Bioquímica
Tolerancia a la Sal
Variación Genética
Altitud
América del Sur
Maize
Biochemistry
Salt Tolerance
Genetic Variation
Altitude
South America
Maize Landrace
Variability
RDA
dc.description.none.fl_txt_mv Maize (Zea mays L.) is a globally important crop for food, feed, and industrial uses. Modern breeding increasingly targets traits beyond yield, including stress tolerance, nutritional quality, and pest resistance. Progress toward these goals is constrained by the narrow genetic diversity of commercial varieties, a consequence of the repeated use of a limited number of inbred lines. Maize landraces therefore represent valuable reservoirs of genetic and phenotypic diversity. Northern Argentina is one of the southernmost regions of maize landrace cultivation and comprises two main centers of diversity: Northeastern Argentina (NEA; <2000 m.a.s.l.) and Northwestern Argentina (NWA; >2000 m.a.s.l.). Despite their potential relevance, phenotypic characterization of these landraces remains limited, particularly for biochemical traits, which, although less visible, play key roles in biomass accumulation, defense against pathogens and herbivores, tolerance to environmental stress, and quality attributes such as flavor. Here, we evaluated 17 phenotypic traits, including morphological traits, leaf biochemical compounds (such as pigments, carbohydrates, and phenolics), and salt stress tolerance, in 19 maize landrace accessions from Northern Argentina. Substantial variation was detected across all traits, both within and among accessions, indicating that each accession harbors a distinct phenotypic profile. While no significant differences were observed between regions, redundancy analysis revealed associations between phenotypic variation and collection-site altitude. These findings highlight the value of Argentine maize landraces as sources of biochemical and stress-related traits and support their conservation and use in breeding programs aimed at broadening the genetic base of cultivated maize.
EEA Pergamino
Fil: Dudzien, Tatiana L. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Freilij, Damián. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Freilij, Damián. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas
Fil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina
Fil: Fernández, Mariana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina
Fil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas
Fil: Lia, Verónica Viviana. Universidad de Buenos Aires. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Lia, Verónica Viviana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Dominguez, Pia Guadalupe. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas
description Maize (Zea mays L.) is a globally important crop for food, feed, and industrial uses. Modern breeding increasingly targets traits beyond yield, including stress tolerance, nutritional quality, and pest resistance. Progress toward these goals is constrained by the narrow genetic diversity of commercial varieties, a consequence of the repeated use of a limited number of inbred lines. Maize landraces therefore represent valuable reservoirs of genetic and phenotypic diversity. Northern Argentina is one of the southernmost regions of maize landrace cultivation and comprises two main centers of diversity: Northeastern Argentina (NEA; <2000 m.a.s.l.) and Northwestern Argentina (NWA; >2000 m.a.s.l.). Despite their potential relevance, phenotypic characterization of these landraces remains limited, particularly for biochemical traits, which, although less visible, play key roles in biomass accumulation, defense against pathogens and herbivores, tolerance to environmental stress, and quality attributes such as flavor. Here, we evaluated 17 phenotypic traits, including morphological traits, leaf biochemical compounds (such as pigments, carbohydrates, and phenolics), and salt stress tolerance, in 19 maize landrace accessions from Northern Argentina. Substantial variation was detected across all traits, both within and among accessions, indicating that each accession harbors a distinct phenotypic profile. While no significant differences were observed between regions, redundancy analysis revealed associations between phenotypic variation and collection-site altitude. These findings highlight the value of Argentine maize landraces as sources of biochemical and stress-related traits and support their conservation and use in breeding programs aimed at broadening the genetic base of cultivated maize.
publishDate 2026
dc.date.none.fl_str_mv 2026-05-29T10:33:18Z
2026-05-29T10:33:18Z
2026-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/26409
https://www.biorxiv.org/content/10.64898/2026.01.02.697242v2.full
https://doi.org/10.64898/2026.01.02.697242
url http://hdl.handle.net/20.500.12123/26409
https://www.biorxiv.org/content/10.64898/2026.01.02.697242v2.full
https://doi.org/10.64898/2026.01.02.697242
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repograntAgreement/INTA/2023-PD-L01-I085, Identificación y caracterización funcional de genes interés biotecnológico para la sostenibilidad productiva y ambiental
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv BioRxiv
publisher.none.fl_str_mv BioRxiv
dc.source.none.fl_str_mv BioRxiv : The preprint server for Biology (February 2026)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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