Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions
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 direc...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2018
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| Materias: | |
| Acceso en línea: | 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 |
| _version_ | 1855483294201675776 |
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| author | 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_browse | Camiletti, Boris Xavier Cristos, Diego Sebastian Gimenez Pecci, Maria De La Paz Lucini, Enrique Iván Magnoli, Carina Maurino, Maria Fernanda Torrico Ramallo, Ada Karina |
| 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_sort | Camiletti, Boris Xavier |
| collection | INTA Digital |
| 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. |
| format | Artículo |
| id | INTA3741 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA37412019-01-14T17:19:48Z Fungal screening and aflatoxin production by Aspergillus section Flavi isolated from pre-harvest maize ears grown in two Argentine regions Camiletti, Boris Xavier Torrico Ramallo, Ada Karina Maurino, Maria Fernanda Cristos, Diego Sebastian Magnoli, Carina Lucini, Enrique Iván Gimenez Pecci, Maria De La Paz Maíz Zea Mays Aspergillus Aflatoxinas Micotoxinas Podredumbres Maize Aflatoxins Mycotoxins Rots Molecular Characterization Argentina 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 2018-10-30T13:36:10Z 2018-10-30T13:36:10Z 2017-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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 eng info:eu-repo/semantics/restrictedAccess application/pdf Argentina (nation) Elsevier Crop protection 92 : 41-48. (February 2017) |
| spellingShingle | Maíz Zea Mays Aspergillus Aflatoxinas Micotoxinas Podredumbres Maize Aflatoxins Mycotoxins Rots Molecular Characterization Argentina Camiletti, Boris Xavier Torrico Ramallo, Ada Karina Maurino, Maria Fernanda Cristos, Diego Sebastian Magnoli, Carina Lucini, Enrique Iván Gimenez Pecci, Maria De La Paz 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 |
| 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_short | 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 |
| topic | Maíz Zea Mays Aspergillus Aflatoxinas Micotoxinas Podredumbres Maize Aflatoxins Mycotoxins Rots Molecular Characterization Argentina |
| 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 |
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