Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina
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...
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| Format: | Artículo |
| Language: | Inglés |
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MDPI
2025
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| Online Access: | http://hdl.handle.net/20.500.12123/20817 https://www.mdpi.com/2073-4395/14/12/2962 https://doi.org/10.3390/agronomy14122962 |
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| author | Ruiz Posse, Agustina María Torrico Ramallo, Ada Karina Barontini, Javier Miguel Camiletti, Boris Xavier |
| author_browse | Barontini, Javier Miguel Camiletti, Boris Xavier Ruiz Posse, Agustina María Torrico Ramallo, Ada Karina |
| author_facet | Ruiz Posse, Agustina María Torrico Ramallo, Ada Karina Barontini, Javier Miguel Camiletti, Boris Xavier |
| author_sort | Ruiz Posse, Agustina María |
| collection | INTA Digital |
| 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. |
| format | Artículo |
| id | INTA20817 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | INTA208172025-01-03T10:42:48Z Mating type of native Aspergillus flavus strains causing Corn Ear Rot in Argentina Ruiz Posse, Agustina María Torrico Ramallo, Ada Karina Barontini, Javier Miguel Camiletti, Boris Xavier Aspergillus flavus Maíz Control Biológico Micotoxinas Argentina Maize Biological Control Mycotoxins Atoxigenic Strains 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 2025-01-03T10:31:10Z 2025-01-03T10:31:10Z 2024-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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 eng 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 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) application/pdf MDPI Agronomy 14 (12) : 2962. (December 2024) |
| spellingShingle | Aspergillus flavus Maíz Control Biológico Micotoxinas Argentina Maize Biological Control Mycotoxins Atoxigenic Strains Ruiz Posse, Agustina María Torrico Ramallo, Ada Karina Barontini, Javier Miguel Camiletti, Boris Xavier 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 |
| 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_short | 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 |
| topic | Aspergillus flavus Maíz Control Biológico Micotoxinas Argentina Maize Biological Control Mycotoxins Atoxigenic Strains |
| url | http://hdl.handle.net/20.500.12123/20817 https://www.mdpi.com/2073-4395/14/12/2962 https://doi.org/10.3390/agronomy14122962 |
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