Biblioteca Digital de VanguardiaGenetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues
Crops residues are an important source of maintenance of Fusarium graminearum inoculum in the soybean agroecosystem. Given that these populations can interact in the substrate through mechanisms of mycelial recognition and that they can come into direct contact with the implanted seed and cause dise...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias
2019
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| Acceso en línea: | http://bdigital.uncu.edu.ar/13657 |
| _version_ | 1782343000264802304 |
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| author | Bonacci, Martín Barros, Germán |
| author_facet | Bonacci, Martín Barros, Germán |
| author_sort | Bonacci, Martín |
| collection | Repositorio |
| description | Crops residues are an important source of maintenance of Fusarium graminearum
inoculum in the soybean agroecosystem. Given that these populations can interact
in the substrate through mechanisms of mycelial recognition and that they can come
into direct contact with the implanted seed and cause disease, the following objectives
were set: (1) to evaluate the genetic diversity through of the mycelial compatibility of F.
graminearum strains isolated from maize crop residues; (2) to analyze the pathogenicity
of F. graminearum strains isolated from crop residues towards soybean seedlings from
different cultivars treated and untreated with fungicide. Mycelial compatibility studies
showed a unique pattern of mycelial compatibility for each strain, indicating a great
heterogeneity in the population evaluated. Pathogenicity tests in all strains tested were
capable of causing symptoms of root rot with varying degrees of severity and reductions
in the height of seedlings. In the factorial statistical analysis, the greatest effect
was marked by the soybean cultivar effect. A clear decline in the severity index was also
observed with the fungicide application, so this would be a useful prevention tool to
reduce the intensity in soybean seedling diseases. |
| format | Artículo |
| id | uncu-13657 |
| institution | Biblioteca Digital - UNCUYO |
| language | Inglés |
| publishDate | 2019 |
| publisher | Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias
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| record_format | ojs |
| spelling | uncu-136572019-11-12T19:39:32Z Genetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues Diversidad genética y patogenicidad a nivel de raíz en plántulas de soja de tres cultivares de cepas de Fusarium graminearum aisladas de rastrojos de maíz Bonacci, Martín Barros, Germán Diversidad genética Patogenicidad Plántulas Soja Gibberella zeae Fusarium graminearum Rastrojo Fungicidas Población vegetal Métodos estadísticos Crop residues Soybean Fungicide Pathogenicity Mycelial compatibility Compatibilidad micelial Rastrojos de maíz Fungicida curasemilla Crops residues are an important source of maintenance of Fusarium graminearum inoculum in the soybean agroecosystem. Given that these populations can interact in the substrate through mechanisms of mycelial recognition and that they can come into direct contact with the implanted seed and cause disease, the following objectives were set: (1) to evaluate the genetic diversity through of the mycelial compatibility of F. graminearum strains isolated from maize crop residues; (2) to analyze the pathogenicity of F. graminearum strains isolated from crop residues towards soybean seedlings from different cultivars treated and untreated with fungicide. Mycelial compatibility studies showed a unique pattern of mycelial compatibility for each strain, indicating a great heterogeneity in the population evaluated. Pathogenicity tests in all strains tested were capable of causing symptoms of root rot with varying degrees of severity and reductions in the height of seedlings. In the factorial statistical analysis, the greatest effect was marked by the soybean cultivar effect. A clear decline in the severity index was also observed with the fungicide application, so this would be a useful prevention tool to reduce the intensity in soybean seedling diseases. Los rastrojos de cultivos antecesores son una fuente importante de mantenimiento del inóculo de Fusarium graminearum en el agroecosistema de la soja. Teniendo en cuenta que estas poblaciones pueden interactuar en el sustrato a través de mecanismos de reconocimiento micelial y que las mismas pueden entrar en contacto directo con la semilla implantada y causar enfermedad, se plantearon los siguientes objetivos: (1) Evaluar la diversidad genética a través de la compatibilidad micelial en cepas de F. graminearum aisladas de rastrojos de maíz; (2) Analizar la patogenicidad de cepas de F. graminearum aisladas de rastrojos respecto de la podredumbre de raíz en plántulas de distintos cultivares de soja tratadas y no tratadas con fungicida curasemillas. Los estudios de compatibilidad micelial mostraron un único patrón de compatibilidad micelial para cada cepa, indicando una gran heterogeneidad en la población evaluada. En los ensayos de patogenicidad todas las cepas evaluadas fueron capaces de provocar síntomas de podredumbre de la raíz con distintos grados de severidad y reducciones en la altura de plántulas. El análisis estadístico factorial demostró que el mayor efecto observado en las variables independientes estuvo marcado por el efecto del cultivar de soja evaluado. También se observó una clara disminución en el índice de severidad con la aplicación de un fungicida curasemilla, por lo que esta sería una herramienta útil de prevención para disminuir la intensidad en las enfermedades de plántulas de soja. Fil: Bonacci, Martín. Universidad Nacional de Río Cuarto Fil: Barros, Germán. Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias 78 Revista de la Facultad de Ciencias Agrarias Vol. 51, no. 1 Revista de la Facultad de Ciencias Agrarias, Vol. 51, no. 1 2019-02-01 eng Inglés http://bdigital.uncu.edu.ar/12688 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar/ article info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias http://bdigital.uncu.edu.ar/13657 |
| spellingShingle | Diversidad genética Patogenicidad Plántulas Soja Gibberella zeae Fusarium graminearum Rastrojo Fungicidas Población vegetal Métodos estadísticos Crop residues Soybean Fungicide Pathogenicity Mycelial compatibility Compatibilidad micelial Rastrojos de maíz Fungicida curasemilla Bonacci, Martín Barros, Germán Genetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues |
| title | Genetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues
|
| title_full | Genetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues
|
| title_fullStr | Genetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues
|
| title_full_unstemmed | Genetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues
|
| title_short | Genetic diversity and pathogenicity on root seedlings from three soybean cultivars of Fusarium graminearum isolated from maize crop residues
|
| title_sort | genetic diversity and pathogenicity on root seedlings from three soybean cultivars of fusarium graminearum isolated from maize crop residues |
| topic | Diversidad genética Patogenicidad Plántulas Soja Gibberella zeae Fusarium graminearum Rastrojo Fungicidas Población vegetal Métodos estadísticos Crop residues Soybean Fungicide Pathogenicity Mycelial compatibility Compatibilidad micelial Rastrojos de maíz Fungicida curasemilla |
| url | http://bdigital.uncu.edu.ar/13657 |