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Abstract
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. [ver mas...]
dc.contributor.authorCamiletti, Boris Xavier
dc.contributor.authorTorrico Ramallo, Ada Karina
dc.contributor.authorMaurino, Maria Fernanda
dc.contributor.authorCristos, Diego Sebastian
dc.contributor.authorMagnoli, Carina
dc.contributor.authorLucini, Enrique Iván
dc.contributor.authorGimenez Pecci, Maria De La Paz
dc.coverage.spatialArgentina (nation)eng
dc.date.accessioned2018-10-30T13:36:10Z
dc.date.available2018-10-30T13:36:10Z
dc.date.issued2017-02
dc.identifier.issn0261-2194
dc.identifier.otherhttps://doi.org/10.1016/j.cropro.2016.10.012
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3741
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0261219416302903?via%3Dihub#!
dc.description.abstractAflatoxin 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.eng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.publisherElseviereng
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourceCrop protection 92 : 41-48. (February 2017)eng
dc.subjectMaízes_AR
dc.subjectMaizeeng
dc.subjectZea Mayses_AR
dc.subjectAspergilluses_AR
dc.subjectAflatoxinases_AR
dc.subjectAflatoxinseng
dc.subjectMycotoxinseng
dc.subjectMicotoxinases_AR
dc.subjectRotseng
dc.subjectPodredumbreses_AR
dc.subject.otherMolecular Characterizationeng
dc.subject.otherArgentina
dc.titleFungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regionseng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.origenInstituto de Patología Vegetales_AR
dc.description.filFil: Camiletti, Boris Xavier. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Microbiología Agrícola; Argentinaes_AR
dc.description.filFil: Torrico Ramallo, Ada Karina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentinaes_AR
dc.description.filFil: Maurino, Maria Fernanda. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentinaes_AR
dc.description.filFil: Cristos, Diego Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigaciones de Agroindustria. Laboratorio de Contaminantes Químicos; Argentinaes_AR
dc.description.filFil: Magnoli, Carina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Físico-Químicas y Naturales. Laboratorio de Micología; Argentinaes_AR
dc.description.filFil: Lucini, Enrique Iván. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentinaes_AR
dc.description.filFil: Giménez Pecci, María de la Paz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentinaes_AR
dc.subtypecientifico


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