Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina

Autores
Ruiz Posse, Agustina María; Torrico Ramallo, Ada Karina; Barontini, Javier Miguel; Camiletti, Boris Xavier
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fungi of the Aspergillus genus, particularly A. flavus, pose a significant threat to maize crops as they can produce toxic and carcinogenic aflatoxin compounds. This study focused on identifying the sexual mating types, MAT1-1 and MAT1-2, through PCR in A. flavus strains isolated from maize ears in two agricultural regions of Argentina—one subtropical and the other temperate—from the 2012/13 to the 2020/21 growing season. A total of 81 strains were analyzed, revealing a higher frequency of the MAT1-1 type in both regions (69%) and in the seasons with the highest number of strains collected. The MAT1-1 strains included 63% non-aflatoxigenic and 37% aflatoxin producers, predominantly lacking sclerotia production (69%), while MAT1-2 strains were mostly aflatoxin producers (82%) and S-sclerotia producers (48%). Additionally, more vegetative compatibility groups were identified as MAT1-1 (4 out of 6) than MAT1-2. These findings suggest that the use of MAT1-1 strains as biocontrol agents could maintain the stability of natural populations and reduce aflatoxin production, minimizing risks to crops. This underscores the importance of evaluating the genetic structure of A. flavus populations to implement effective biological control strategies.
EEA Mendoza
Fil: Ruiz Posse, Agustina María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Ruiz Posse, Agustina María. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina.
Fil: Torrico, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina.
Fil: Torrico Ramallo, Ada Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina.
Fil: Barontini, Javier Miguel. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Cátedra de Fitopatología; Mendoza, Argentina.
Fil: Camiletti, Boris Xavier. University of Illinois Urbana-Champaign. Department of Crop Sciences; Estados Unidos
Fuente
Agronomy 14 (12) : 2962. (December 2024)
Materia
Aspergillus flavus
Maíz
Control Biológico
Micotoxinas
Argentina
Maize
Biological Control
Mycotoxins
Atoxigenic Strains
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
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spelling Mating type of native Aspergillus flavus strains causing Corn Ear Rot in ArgentinaRuiz Posse, Agustina MaríaTorrico Ramallo, Ada KarinaBarontini, Javier MiguelCamiletti, Boris XavierAspergillus flavusMaízControl BiológicoMicotoxinasArgentinaMaizeBiological ControlMycotoxinsAtoxigenic StrainsFungi of the Aspergillus genus, particularly A. flavus, pose a significant threat to maize crops as they can produce toxic and carcinogenic aflatoxin compounds. This study focused on identifying the sexual mating types, MAT1-1 and MAT1-2, through PCR in A. flavus strains isolated from maize ears in two agricultural regions of Argentina—one subtropical and the other temperate—from the 2012/13 to the 2020/21 growing season. A total of 81 strains were analyzed, revealing a higher frequency of the MAT1-1 type in both regions (69%) and in the seasons with the highest number of strains collected. The MAT1-1 strains included 63% non-aflatoxigenic and 37% aflatoxin producers, predominantly lacking sclerotia production (69%), while MAT1-2 strains were mostly aflatoxin producers (82%) and S-sclerotia producers (48%). Additionally, more vegetative compatibility groups were identified as MAT1-1 (4 out of 6) than MAT1-2. These findings suggest that the use of MAT1-1 strains as biocontrol agents could maintain the stability of natural populations and reduce aflatoxin production, minimizing risks to crops. This underscores the importance of evaluating the genetic structure of A. flavus populations to implement effective biological control strategies.EEA MendozaFil: Ruiz Posse, Agustina María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Ruiz Posse, Agustina María. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina.Fil: Torrico, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina.Fil: Torrico Ramallo, Ada Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina.Fil: Barontini, Javier Miguel. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Cátedra de Fitopatología; Mendoza, Argentina.Fil: Camiletti, Boris Xavier. University of Illinois Urbana-Champaign. Department of Crop Sciences; Estados UnidosMDPI2025-01-03T10:31:10Z2025-01-03T10:31:10Z2024-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/20817https://www.mdpi.com/2073-4395/14/12/29622073-4395https://doi.org/10.3390/agronomy14122962Agronomy 14 (12) : 2962. (December 2024)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repograntAgreement/INTA/2023-PE-L04-I120, Inocuidad física, química y biológica de los alimentos. Metodologías analíticas, tecnologías, estrategias de intervención innovadoras y análisis de riesgoinfo:eu-repograntAgreement/INTA/2023-PE-L04-I073, Desarrollo de bioinsumos y su integración en estrategias de manejo de adversidades bióticas y abióticas en cultivos agrícolas y forestalesinfo: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)2025-09-29T13:47:02Zoai:localhost:20.500.12123/20817instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:47:03.337INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
title Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
spellingShingle Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
Ruiz Posse, Agustina María
Aspergillus flavus
Maíz
Control Biológico
Micotoxinas
Argentina
Maize
Biological Control
Mycotoxins
Atoxigenic Strains
title_short Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
title_full Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
title_fullStr Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
title_full_unstemmed Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
title_sort Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
dc.creator.none.fl_str_mv Ruiz Posse, Agustina María
Torrico Ramallo, Ada Karina
Barontini, Javier Miguel
Camiletti, Boris Xavier
author Ruiz Posse, Agustina María
author_facet Ruiz Posse, Agustina María
Torrico Ramallo, Ada Karina
Barontini, Javier Miguel
Camiletti, Boris Xavier
author_role author
author2 Torrico Ramallo, Ada Karina
Barontini, Javier Miguel
Camiletti, Boris Xavier
author2_role author
author
author
dc.subject.none.fl_str_mv Aspergillus flavus
Maíz
Control Biológico
Micotoxinas
Argentina
Maize
Biological Control
Mycotoxins
Atoxigenic Strains
topic Aspergillus flavus
Maíz
Control Biológico
Micotoxinas
Argentina
Maize
Biological Control
Mycotoxins
Atoxigenic Strains
dc.description.none.fl_txt_mv Fungi of the Aspergillus genus, particularly A. flavus, pose a significant threat to maize crops as they can produce toxic and carcinogenic aflatoxin compounds. This study focused on identifying the sexual mating types, MAT1-1 and MAT1-2, through PCR in A. flavus strains isolated from maize ears in two agricultural regions of Argentina—one subtropical and the other temperate—from the 2012/13 to the 2020/21 growing season. A total of 81 strains were analyzed, revealing a higher frequency of the MAT1-1 type in both regions (69%) and in the seasons with the highest number of strains collected. The MAT1-1 strains included 63% non-aflatoxigenic and 37% aflatoxin producers, predominantly lacking sclerotia production (69%), while MAT1-2 strains were mostly aflatoxin producers (82%) and S-sclerotia producers (48%). Additionally, more vegetative compatibility groups were identified as MAT1-1 (4 out of 6) than MAT1-2. These findings suggest that the use of MAT1-1 strains as biocontrol agents could maintain the stability of natural populations and reduce aflatoxin production, minimizing risks to crops. This underscores the importance of evaluating the genetic structure of A. flavus populations to implement effective biological control strategies.
EEA Mendoza
Fil: Ruiz Posse, Agustina María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Ruiz Posse, Agustina María. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina.
Fil: Torrico, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina.
Fil: Torrico Ramallo, Ada Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina.
Fil: Barontini, Javier Miguel. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Cátedra de Fitopatología; Mendoza, Argentina.
Fil: Camiletti, Boris Xavier. University of Illinois Urbana-Champaign. Department of Crop Sciences; Estados Unidos
description Fungi of the Aspergillus genus, particularly A. flavus, pose a significant threat to maize crops as they can produce toxic and carcinogenic aflatoxin compounds. This study focused on identifying the sexual mating types, MAT1-1 and MAT1-2, through PCR in A. flavus strains isolated from maize ears in two agricultural regions of Argentina—one subtropical and the other temperate—from the 2012/13 to the 2020/21 growing season. A total of 81 strains were analyzed, revealing a higher frequency of the MAT1-1 type in both regions (69%) and in the seasons with the highest number of strains collected. The MAT1-1 strains included 63% non-aflatoxigenic and 37% aflatoxin producers, predominantly lacking sclerotia production (69%), while MAT1-2 strains were mostly aflatoxin producers (82%) and S-sclerotia producers (48%). Additionally, more vegetative compatibility groups were identified as MAT1-1 (4 out of 6) than MAT1-2. These findings suggest that the use of MAT1-1 strains as biocontrol agents could maintain the stability of natural populations and reduce aflatoxin production, minimizing risks to crops. This underscores the importance of evaluating the genetic structure of A. flavus populations to implement effective biological control strategies.
publishDate 2024
dc.date.none.fl_str_mv 2024-12
2025-01-03T10:31:10Z
2025-01-03T10:31:10Z
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/20.500.12123/20817
https://www.mdpi.com/2073-4395/14/12/2962
2073-4395
https://doi.org/10.3390/agronomy14122962
url http://hdl.handle.net/20.500.12123/20817
https://www.mdpi.com/2073-4395/14/12/2962
https://doi.org/10.3390/agronomy14122962
identifier_str_mv 2073-4395
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repograntAgreement/INTA/2023-PE-L04-I120, Inocuidad física, química y biológica de los alimentos. Metodologías analíticas, tecnologías, estrategias de intervención innovadoras y análisis de riesgo
info:eu-repograntAgreement/INTA/2023-PE-L04-I073, Desarrollo de bioinsumos y su integración en estrategias de manejo de adversidades bióticas y abióticas en cultivos agrícolas y forestales
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 MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Agronomy 14 (12) : 2962. (December 2024)
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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