Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions

Autores
Camiletti, Boris Xavier; Torrico Ramallo, Ada Karina; Maurino, Maria Fernanda; Cristos, Diego Sebastian; Magnoli, Carina; Lucini, Enrique Iván; Gimenez Pecci, Maria De La Paz
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aflatoxin contamination in maize kernels grown in central Argentina has increased since 2008. Pre-harvest maize ear samples were collected during two growing seasons to determine prevalent fungal genera as well as aflatoxin production capacity by Aspergillus sect. Flavi in two maize regions. A direct planting procedure was performed for fungal screening. Aspergillus section Flavi was identified via a morphological analysis and some colonies were isolated. Strains were subjected to molecular analysis and aflatoxin production was studied. Fusarium was the fungus genus with the highest severity, followed by Penicillium and Aspergillus in both regions. Aspergillus sect. flavi were detected in 27 (73%) samples. PCR amplifications were observed in 94% of the isolates. Aspergillus sect. flavi severity varied significantly between years. A great proportion of toxigenic strains were observed in a native Aspergillus sect. flavi population (95%) producing B- and G-type aflatoxins. Maize ears grown in regions I and IV in Argentina are prone to degradation by fungi. Toxigenic strains are predominant in native Aspergillus sect. Flavi populations. Aflatoxin contamination of maize kernels is not restricted to post-harvest; rather, it is a serious issue that begins with colonization by Aspergillus sect. Flavi in ears.
Instituto de Patología Vegetal
Fil: Camiletti, Boris Xavier. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Microbiología Agrícola; Argentina
Fil: Torrico Ramallo, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Maurino, Maria Fernanda. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Cristos, Diego Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigaciones de Agroindustria. Laboratorio de Contaminantes Químicos; Argentina
Fil: Magnoli, Carina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Físico-Químicas y Naturales. Laboratorio de Micología; Argentina
Fil: Lucini, Enrique Iván. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Giménez Pecci, María de la Paz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fuente
Crop protection 92 : 41-48. (February 2017)
Materia
Maíz
Zea Mays
Aspergillus
Aflatoxinas
Micotoxinas
Podredumbres
Maize
Aflatoxins
Mycotoxins
Rots
Molecular Characterization
Argentina
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/3741
Acceder
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oai_identifier_str oai:localhost:20.500.12123/3741
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network_name_str INTA Digital (INTA)
spelling Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regionsCamiletti, Boris XavierTorrico Ramallo, Ada KarinaMaurino, Maria FernandaCristos, Diego SebastianMagnoli, CarinaLucini, Enrique IvánGimenez Pecci, Maria De La PazMaízZea MaysAspergillusAflatoxinasMicotoxinasPodredumbresMaizeAflatoxinsMycotoxinsRotsMolecular CharacterizationArgentinaAflatoxin contamination in maize kernels grown in central Argentina has increased since 2008. Pre-harvest maize ear samples were collected during two growing seasons to determine prevalent fungal genera as well as aflatoxin production capacity by Aspergillus sect. Flavi in two maize regions. A direct planting procedure was performed for fungal screening. Aspergillus section Flavi was identified via a morphological analysis and some colonies were isolated. Strains were subjected to molecular analysis and aflatoxin production was studied. Fusarium was the fungus genus with the highest severity, followed by Penicillium and Aspergillus in both regions. Aspergillus sect. flavi were detected in 27 (73%) samples. PCR amplifications were observed in 94% of the isolates. Aspergillus sect. flavi severity varied significantly between years. A great proportion of toxigenic strains were observed in a native Aspergillus sect. flavi population (95%) producing B- and G-type aflatoxins. Maize ears grown in regions I and IV in Argentina are prone to degradation by fungi. Toxigenic strains are predominant in native Aspergillus sect. Flavi populations. Aflatoxin contamination of maize kernels is not restricted to post-harvest; rather, it is a serious issue that begins with colonization by Aspergillus sect. Flavi in ears.Instituto de Patología VegetalFil: Camiletti, Boris Xavier. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Microbiología Agrícola; ArgentinaFil: Torrico Ramallo, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Maurino, Maria Fernanda. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Cristos, Diego Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigaciones de Agroindustria. Laboratorio de Contaminantes Químicos; ArgentinaFil: Magnoli, Carina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Físico-Químicas y Naturales. Laboratorio de Micología; ArgentinaFil: Lucini, Enrique Iván. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Giménez Pecci, María de la Paz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaElsevier2018-10-30T13:36:10Z2018-10-30T13:36:10Z2017-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/3741https://www.sciencedirect.com/science/article/pii/S0261219416302903?via%3Dihub#!0261-2194https://doi.org/10.1016/j.cropro.2016.10.012Crop protection 92 : 41-48. (February 2017)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología AgropecuariaengArgentina (nation)info:eu-repo/semantics/restrictedAccess2025-09-04T09:47:38Zoai:localhost:20.500.12123/3741instacron: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 09:47:39.493INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
title Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
spellingShingle Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
Camiletti, Boris Xavier
Maíz
Zea Mays
Aspergillus
Aflatoxinas
Micotoxinas
Podredumbres
Maize
Aflatoxins
Mycotoxins
Rots
Molecular Characterization
Argentina
title_short Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
title_full Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
title_fullStr Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
title_full_unstemmed Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
title_sort Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
dc.creator.none.fl_str_mv Camiletti, Boris Xavier
Torrico Ramallo, Ada Karina
Maurino, Maria Fernanda
Cristos, Diego Sebastian
Magnoli, Carina
Lucini, Enrique Iván
Gimenez Pecci, Maria De La Paz
author Camiletti, Boris Xavier
author_facet Camiletti, Boris Xavier
Torrico Ramallo, Ada Karina
Maurino, Maria Fernanda
Cristos, Diego Sebastian
Magnoli, Carina
Lucini, Enrique Iván
Gimenez Pecci, Maria De La Paz
author_role author
author2 Torrico Ramallo, Ada Karina
Maurino, Maria Fernanda
Cristos, Diego Sebastian
Magnoli, Carina
Lucini, Enrique Iván
Gimenez Pecci, Maria De La Paz
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Maíz
Zea Mays
Aspergillus
Aflatoxinas
Micotoxinas
Podredumbres
Maize
Aflatoxins
Mycotoxins
Rots
Molecular Characterization
Argentina
topic Maíz
Zea Mays
Aspergillus
Aflatoxinas
Micotoxinas
Podredumbres
Maize
Aflatoxins
Mycotoxins
Rots
Molecular Characterization
Argentina
dc.description.none.fl_txt_mv Aflatoxin contamination in maize kernels grown in central Argentina has increased since 2008. Pre-harvest maize ear samples were collected during two growing seasons to determine prevalent fungal genera as well as aflatoxin production capacity by Aspergillus sect. Flavi in two maize regions. A direct planting procedure was performed for fungal screening. Aspergillus section Flavi was identified via a morphological analysis and some colonies were isolated. Strains were subjected to molecular analysis and aflatoxin production was studied. Fusarium was the fungus genus with the highest severity, followed by Penicillium and Aspergillus in both regions. Aspergillus sect. flavi were detected in 27 (73%) samples. PCR amplifications were observed in 94% of the isolates. Aspergillus sect. flavi severity varied significantly between years. A great proportion of toxigenic strains were observed in a native Aspergillus sect. flavi population (95%) producing B- and G-type aflatoxins. Maize ears grown in regions I and IV in Argentina are prone to degradation by fungi. Toxigenic strains are predominant in native Aspergillus sect. Flavi populations. Aflatoxin contamination of maize kernels is not restricted to post-harvest; rather, it is a serious issue that begins with colonization by Aspergillus sect. Flavi in ears.
Instituto de Patología Vegetal
Fil: Camiletti, Boris Xavier. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Microbiología Agrícola; Argentina
Fil: Torrico Ramallo, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Maurino, Maria Fernanda. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
Fil: Cristos, Diego Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigaciones de Agroindustria. Laboratorio de Contaminantes Químicos; Argentina
Fil: Magnoli, Carina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Físico-Químicas y Naturales. Laboratorio de Micología; Argentina
Fil: Lucini, Enrique Iván. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Giménez Pecci, María de la Paz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina
description Aflatoxin contamination in maize kernels grown in central Argentina has increased since 2008. Pre-harvest maize ear samples were collected during two growing seasons to determine prevalent fungal genera as well as aflatoxin production capacity by Aspergillus sect. Flavi in two maize regions. A direct planting procedure was performed for fungal screening. Aspergillus section Flavi was identified via a morphological analysis and some colonies were isolated. Strains were subjected to molecular analysis and aflatoxin production was studied. Fusarium was the fungus genus with the highest severity, followed by Penicillium and Aspergillus in both regions. Aspergillus sect. flavi were detected in 27 (73%) samples. PCR amplifications were observed in 94% of the isolates. Aspergillus sect. flavi severity varied significantly between years. A great proportion of toxigenic strains were observed in a native Aspergillus sect. flavi population (95%) producing B- and G-type aflatoxins. Maize ears grown in regions I and IV in Argentina are prone to degradation by fungi. Toxigenic strains are predominant in native Aspergillus sect. Flavi populations. Aflatoxin contamination of maize kernels is not restricted to post-harvest; rather, it is a serious issue that begins with colonization by Aspergillus sect. Flavi in ears.
publishDate 2017
dc.date.none.fl_str_mv 2017-02
2018-10-30T13:36:10Z
2018-10-30T13:36:10Z
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/20.500.12123/3741
https://www.sciencedirect.com/science/article/pii/S0261219416302903?via%3Dihub#!
0261-2194
https://doi.org/10.1016/j.cropro.2016.10.012
url http://hdl.handle.net/20.500.12123/3741
https://www.sciencedirect.com/science/article/pii/S0261219416302903?via%3Dihub#!
https://doi.org/10.1016/j.cropro.2016.10.012
identifier_str_mv 0261-2194
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Argentina (nation)
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Crop protection 92 : 41-48. (February 2017)
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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score 12.623145

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