Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina
- Autores
- Ruiz Posse, Agustina María; Camiletti, Boris Xavier; Gimenez, Maria De La Paz; Torrico Ramallo, Ada Karina
- Año de publicación
- 2025
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Non-aflatoxigenic Aspergillus flavus strains have emerged as promising biocontrol agents to reduce aflatoxin contamination in maize crops. This study aimed to evaluate the growth dynamics, sporulation capacity and phenotypic stability of local non-aflatoxigenic A. flavus strains from Argentina compared to aflatoxigenic strains. Eighteen non-aflatoxigenic strains, isolated from maize ears grown in Argentina's central agricultural region, were assessed for growth and spore production at various temperatures, with the results indicating superior growth and sporulation under optimal conditions (30°C). The phenotypic stability of these strains was tested by conducting 20 consecutive subcultures, confirming the retention of their non-aflatoxigenic character. The local non-aflatoxigenic strains lack the nucleotide 591 polymorphism in the pksA gene, indicating that their inability to produce aflatoxins is not due to this mutation. These strains demonstrated the ability to survive and grow under high-temperature conditions, making them suitable candidates for biocontrol applications in regions with variable climates and significant thermal amplitudes. The findings support the potential of these local non-aflatoxigenic strains as effective biocontrol agents to mitigate aflatoxin contamination in maize production systems in Argentina.
Instituto de Patología Vegetal
Fil: Ruiz Posse, Agustina María. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina
Fil: Ruiz Posse, Agustina María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Camiletti, Boris Xavier. University of Illinois Urbana-Champaign. Department of Crop Sciences; USA
Fil: Gimenez, Maria De La Paz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Torrico Ramallo, 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 - Fuente
- Plant pathology : 1-10. (First published: 31 July 2025)
- Materia
-
Biological Control
Aflatoxins
Maize
Control Biológico
Argentina
Aspergillus flavus
Aflatoxinas
Maíz
Biocontrol
Growth Curve
Phenotypic Characterisation
Sporulation Curve - Nivel de accesibilidad
- acceso restringido
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/23627
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Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in ArgentinaRuiz Posse, Agustina MaríaCamiletti, Boris XavierGimenez, Maria De La PazTorrico Ramallo, Ada KarinaBiological ControlAflatoxinsMaizeControl BiológicoArgentinaAspergillus flavusAflatoxinasMaízBiocontrolGrowth CurvePhenotypic CharacterisationSporulation CurveNon-aflatoxigenic Aspergillus flavus strains have emerged as promising biocontrol agents to reduce aflatoxin contamination in maize crops. This study aimed to evaluate the growth dynamics, sporulation capacity and phenotypic stability of local non-aflatoxigenic A. flavus strains from Argentina compared to aflatoxigenic strains. Eighteen non-aflatoxigenic strains, isolated from maize ears grown in Argentina's central agricultural region, were assessed for growth and spore production at various temperatures, with the results indicating superior growth and sporulation under optimal conditions (30°C). The phenotypic stability of these strains was tested by conducting 20 consecutive subcultures, confirming the retention of their non-aflatoxigenic character. The local non-aflatoxigenic strains lack the nucleotide 591 polymorphism in the pksA gene, indicating that their inability to produce aflatoxins is not due to this mutation. These strains demonstrated the ability to survive and grow under high-temperature conditions, making them suitable candidates for biocontrol applications in regions with variable climates and significant thermal amplitudes. The findings support the potential of these local non-aflatoxigenic strains as effective biocontrol agents to mitigate aflatoxin contamination in maize production systems in Argentina.Instituto de Patología VegetalFil: Ruiz Posse, Agustina María. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); ArgentinaFil: Ruiz Posse, Agustina María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Camiletti, Boris Xavier. University of Illinois Urbana-Champaign. Department of Crop Sciences; USAFil: Gimenez, Maria De La Paz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Torrico Ramallo, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Torrico Ramallo, Ada Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); ArgentinaWiley2025-08-29T16:12:06Z2025-08-29T16:12:06Z2025-07-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/23627https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/ppa.700300032-08621365-3059https://doi.org/10.1111/ppa.70030Plant pathology : 1-10. (First published: 31 July 2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo: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-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-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-04T09:51:16Zoai:localhost:20.500.12123/23627instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:51:16.534INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse |
dc.title.none.fl_str_mv |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina |
title |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina |
spellingShingle |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina Ruiz Posse, Agustina María Biological Control Aflatoxins Maize Control Biológico Argentina Aspergillus flavus Aflatoxinas Maíz Biocontrol Growth Curve Phenotypic Characterisation Sporulation Curve |
title_short |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina |
title_full |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina |
title_fullStr |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina |
title_full_unstemmed |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina |
title_sort |
Growth Dynamics, Sporulation and Stability of Aflatoxin Production in Aspergillus flavus Strains From Preharvest Maize in Argentina |
dc.creator.none.fl_str_mv |
Ruiz Posse, Agustina María Camiletti, Boris Xavier Gimenez, Maria De La Paz Torrico Ramallo, Ada Karina |
author |
Ruiz Posse, Agustina María |
author_facet |
Ruiz Posse, Agustina María Camiletti, Boris Xavier Gimenez, Maria De La Paz Torrico Ramallo, Ada Karina |
author_role |
author |
author2 |
Camiletti, Boris Xavier Gimenez, Maria De La Paz Torrico Ramallo, Ada Karina |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Biological Control Aflatoxins Maize Control Biológico Argentina Aspergillus flavus Aflatoxinas Maíz Biocontrol Growth Curve Phenotypic Characterisation Sporulation Curve |
topic |
Biological Control Aflatoxins Maize Control Biológico Argentina Aspergillus flavus Aflatoxinas Maíz Biocontrol Growth Curve Phenotypic Characterisation Sporulation Curve |
dc.description.none.fl_txt_mv |
Non-aflatoxigenic Aspergillus flavus strains have emerged as promising biocontrol agents to reduce aflatoxin contamination in maize crops. This study aimed to evaluate the growth dynamics, sporulation capacity and phenotypic stability of local non-aflatoxigenic A. flavus strains from Argentina compared to aflatoxigenic strains. Eighteen non-aflatoxigenic strains, isolated from maize ears grown in Argentina's central agricultural region, were assessed for growth and spore production at various temperatures, with the results indicating superior growth and sporulation under optimal conditions (30°C). The phenotypic stability of these strains was tested by conducting 20 consecutive subcultures, confirming the retention of their non-aflatoxigenic character. The local non-aflatoxigenic strains lack the nucleotide 591 polymorphism in the pksA gene, indicating that their inability to produce aflatoxins is not due to this mutation. These strains demonstrated the ability to survive and grow under high-temperature conditions, making them suitable candidates for biocontrol applications in regions with variable climates and significant thermal amplitudes. The findings support the potential of these local non-aflatoxigenic strains as effective biocontrol agents to mitigate aflatoxin contamination in maize production systems in Argentina. Instituto de Patología Vegetal Fil: Ruiz Posse, Agustina María. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina Fil: Ruiz Posse, Agustina María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Camiletti, Boris Xavier. University of Illinois Urbana-Champaign. Department of Crop Sciences; USA Fil: Gimenez, Maria De La Paz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Torrico Ramallo, 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 |
description |
Non-aflatoxigenic Aspergillus flavus strains have emerged as promising biocontrol agents to reduce aflatoxin contamination in maize crops. This study aimed to evaluate the growth dynamics, sporulation capacity and phenotypic stability of local non-aflatoxigenic A. flavus strains from Argentina compared to aflatoxigenic strains. Eighteen non-aflatoxigenic strains, isolated from maize ears grown in Argentina's central agricultural region, were assessed for growth and spore production at various temperatures, with the results indicating superior growth and sporulation under optimal conditions (30°C). The phenotypic stability of these strains was tested by conducting 20 consecutive subcultures, confirming the retention of their non-aflatoxigenic character. The local non-aflatoxigenic strains lack the nucleotide 591 polymorphism in the pksA gene, indicating that their inability to produce aflatoxins is not due to this mutation. These strains demonstrated the ability to survive and grow under high-temperature conditions, making them suitable candidates for biocontrol applications in regions with variable climates and significant thermal amplitudes. The findings support the potential of these local non-aflatoxigenic strains as effective biocontrol agents to mitigate aflatoxin contamination in maize production systems in Argentina. |
publishDate |
2025 |
dc.date.none.fl_str_mv |
2025-08-29T16:12:06Z 2025-08-29T16:12:06Z 2025-07-31 |
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/20.500.12123/23627 https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/ppa.70030 0032-0862 1365-3059 https://doi.org/10.1111/ppa.70030 |
url |
http://hdl.handle.net/20.500.12123/23627 https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/ppa.70030 https://doi.org/10.1111/ppa.70030 |
identifier_str_mv |
0032-0862 1365-3059 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
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 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 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/restrictedAccess 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 |
restrictedAccess |
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 |
Wiley |
publisher.none.fl_str_mv |
Wiley |
dc.source.none.fl_str_mv |
Plant pathology : 1-10. (First published: 31 July 2025) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
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INTA Digital (INTA) |
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INTA Digital (INTA) |
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Instituto Nacional de Tecnología Agropecuaria |
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INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
repository.mail.fl_str_mv |
tripaldi.nicolas@inta.gob.ar |
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