Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina
Developing resistance to species of Fusarium in maize (Zea mays L.) is important to prevent field mycotoxin contamination. Isolates representative of natural conditions need to be identified to maximize selection responses. Sixty isolates belonging to Fusarium section Liseola collected from a major...
| Main Authors: | , , , , |
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| Format: | Artículo |
| Language: | Inglés |
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Edizioni ETS
2020
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| Subjects: | |
| Online Access: | http://www.sipav.org/main/jpp/index.php/jpp/article/view/31/24 http://hdl.handle.net/20.500.12123/7265 |
| _version_ | 1855483973004689408 |
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| author | Iglesias, Juliana Presello, Daniel Alberto Botta, Grisela Lori, Gladys Albina Fauguel, Carolina Maria |
| author_browse | Botta, Grisela Fauguel, Carolina Maria Iglesias, Juliana Lori, Gladys Albina Presello, Daniel Alberto |
| author_facet | Iglesias, Juliana Presello, Daniel Alberto Botta, Grisela Lori, Gladys Albina Fauguel, Carolina Maria |
| author_sort | Iglesias, Juliana |
| collection | INTA Digital |
| description | Developing resistance to species of Fusarium in maize (Zea mays L.) is important to prevent field mycotoxin contamination. Isolates representative of natural conditions need to be identified to maximize selection responses. Sixty isolates belonging to Fusarium section Liseola collected from a major maize growing region in Argentina were tested for sexual compatibility with eight standard tester strains (A-H) of the Gibberella fujikuroi complex. A twenty-nine isolate sub-sample (MAT-A: 26, MAT-E: 2 and MAT-D: 1) was tested for in vitro production of fumonisins and for aggressiveness to two maize hybrids after silk inoculation. Mating population A (F. verticillioides) was the most prevalent species (90%) coexisting with some isolates belonging to MAT-D (F.proliferatum) and MAT-E(F. subglutinans). Fumonisin production varied from 0.4 to 2884 mg g-1 for MAT-A and from 0.3 to 0.6 mg g-1 for MAT-E. The only isolate from MATD produced undetectable levels. Most isolates showed mild aggressiveness but two uncommon highly aggressive strains (MAT-A and D) were also identified. No associations between fumonisin production and disease severity were observed. Differences in disease severity between moderately resistant and susceptible hybrids varied across years and isolates suggesting that responses to selection might depend on the isolate used to produce the inoculum. The use of isolate mixtures might reduce genotype-by-isolate interaction although it would hinder identification of resistance to specific strains. |
| format | Artículo |
| id | INTA7265 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Edizioni ETS |
| publisherStr | Edizioni ETS |
| record_format | dspace |
| spelling | INTA72652022-03-23T12:04:28Z Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina Iglesias, Juliana Presello, Daniel Alberto Botta, Grisela Lori, Gladys Albina Fauguel, Carolina Maria Maíz Fusarium Relaciones Huésped Patógeno Fitopatología Gibberella fujikuroi Fumonisinas Maize Host Pathogen Relations Plant Pathology Fumonisins Argentina Developing resistance to species of Fusarium in maize (Zea mays L.) is important to prevent field mycotoxin contamination. Isolates representative of natural conditions need to be identified to maximize selection responses. Sixty isolates belonging to Fusarium section Liseola collected from a major maize growing region in Argentina were tested for sexual compatibility with eight standard tester strains (A-H) of the Gibberella fujikuroi complex. A twenty-nine isolate sub-sample (MAT-A: 26, MAT-E: 2 and MAT-D: 1) was tested for in vitro production of fumonisins and for aggressiveness to two maize hybrids after silk inoculation. Mating population A (F. verticillioides) was the most prevalent species (90%) coexisting with some isolates belonging to MAT-D (F.proliferatum) and MAT-E(F. subglutinans). Fumonisin production varied from 0.4 to 2884 mg g-1 for MAT-A and from 0.3 to 0.6 mg g-1 for MAT-E. The only isolate from MATD produced undetectable levels. Most isolates showed mild aggressiveness but two uncommon highly aggressive strains (MAT-A and D) were also identified. No associations between fumonisin production and disease severity were observed. Differences in disease severity between moderately resistant and susceptible hybrids varied across years and isolates suggesting that responses to selection might depend on the isolate used to produce the inoculum. The use of isolate mixtures might reduce genotype-by-isolate interaction although it would hinder identification of resistance to specific strains. EEA Pergamino Fil: Iglesias, Juliana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentina Fil: Presello, Daniel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentina Fil: Botta, Grisela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina Fil: Lori, G.A. Universidad Nacional de La Plata. Centro de Investigaciones de Fitopatología (CIDEFI-CIC); Argentina Fil: Fauguel, Carolina Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina 2020-05-18T15:26:34Z 2020-05-18T15:26:34Z 2010-03 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://www.sipav.org/main/jpp/index.php/jpp/article/view/31/24 http://hdl.handle.net/20.500.12123/7265 1125-4653 2239-7264 eng 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 Edizioni ETS Journal of Plant Pathology 92 (1) : 205-211. (March 2010) |
| spellingShingle | Maíz Fusarium Relaciones Huésped Patógeno Fitopatología Gibberella fujikuroi Fumonisinas Maize Host Pathogen Relations Plant Pathology Fumonisins Argentina Iglesias, Juliana Presello, Daniel Alberto Botta, Grisela Lori, Gladys Albina Fauguel, Carolina Maria Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina |
| title | Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina |
| title_full | Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina |
| title_fullStr | Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina |
| title_full_unstemmed | Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina |
| title_short | Aggressiveness of fusarium section liseola isolates causing maize ear rot in Argentina |
| title_sort | aggressiveness of fusarium section liseola isolates causing maize ear rot in argentina |
| topic | Maíz Fusarium Relaciones Huésped Patógeno Fitopatología Gibberella fujikuroi Fumonisinas Maize Host Pathogen Relations Plant Pathology Fumonisins Argentina |
| url | http://www.sipav.org/main/jpp/index.php/jpp/article/view/31/24 http://hdl.handle.net/20.500.12123/7265 |
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