Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe...
- Autores
- Fernández, Laura Noemí
- Año de publicación
- 2023
- Idioma
- español castellano
- Tipo de recurso
- tesis doctoral
- Estado
- versión aceptada
- Colaborador/a o director/a de tesis
- Mondino, Pedro Emilio
Sosa, María Cristina
Galdeano, Ernestina
Del Valle, Eleodoro
Favaro, María Alejandra - Descripción
- Fil: Fernández, Laura Noemí. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina.
Bitter rot (BR), caused by Colletotrichum spp., is one of the prevalent fungal diseases of apple worldwide. Some Colletotrichum spp. also causes Glomerella leaf spot (GLS). The presence of BR was recorded in 2014 in the central region of Santa Fe, and leaf spots (LS) began to be seen in 2016 in three low-chill apple cultivars, ‘Eva’, ‘Princesa’ and ‘Caricia’. This thesis was focused to characterized the Colletotrichum species involved in these pathologies, studying aspects of epidemiology and pathogenesis and determined the sensitivity of isolates to fungicides. Thirty-four isolates from symptomatic fruits and leaves were obtained. Morphological characteristics in combination with multilocus analysis revealed that Colletotrichum siamense is the single species associated with BR and LS on low-chill apples in Santa Fe. Of the three cultivars evaluated, ‘Caricia’ was the most susceptible to BR. The registered LS have notable differences with typical GLS revealing that this disease is no present in the region. It was also determined that C. siamense survives in the form of conidia, mainly on the plant, and that it uses a hemibiotrophic mechanism to infect fruits and leaves. The isolates of C. siamense are sensitive to fungicides belonging to the methyl benzimidazole carbamate and demethylation inhibitors groups. These findings will be useful for future studies of sensitivity to fungicide in the field and to design management strategies for diseases caused by C. siamense in the region.
Bitter rot (BR), caused by Colletotrichum spp., is one of the prevalent fungal diseases of apple worldwide. Some Colletotrichum spp. also causes Glomerella leaf spot (GLS). The presence of BR was recorded in 2014 in the central region of Santa Fe, and leaf spots (LS) began to be seen in 2016 in three low-chill apple cultivars, ‘Eva’, ‘Princesa’ and ‘Caricia’. This thesis was focused to characterized the Colletotrichum species involved in these pathologies, studying aspects of epidemiology and pathogenesis and determined the sensitivity of isolates to fungicides. Thirty-four isolates from symptomatic fruits and leaves were obtained. Morphological characteristics in combination with multilocus analysis revealed that Colletotrichum siamense is the single species associated with BR and LS on low-chill apples in Santa Fe. Of the three cultivars evaluated, ‘Caricia’ was the most susceptible to BR. The registered LS have notable differences with typical GLS revealing that this disease is no present in the region. It was also determined that C. siamense survives in the form of conidia, mainly on the plant, and that it uses a hemibiotrophic mechanism to infect fruits and leaves. The isolates of C. siamense are sensitive to fungicides belonging to the methyl benzimidazole carbamate and demethylation inhibitors groups. These findings will be useful for future studies of sensitivity to fungicide in the field and to design management strategies for diseases caused by C. siamense in the region.
Consejo Nacional de Investigaciones Científicas y Técnicas
Universidad Nacional del Litoral - Materia
-
Podredumbre amarga
Manchas foliares
Complejo de especies C. gloeosporioides
Manzanos de bajos requerimientos de frío
Identificación molecular
Fungicidas
Bitter rot
Leaf spot
C. gloeosporioides species complex
Low-chill apple cultivars
Molecular identification
Fungicide - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
- Repositorio
- Institución
- Universidad Nacional del Litoral
- OAI Identificador
- oai:https://bibliotecavirtual.unl.edu.ar:11185/7146
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Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa FeIdentification and characterization of Colletotrichum species associated with leaf spots and bitter rot in low-chill apple cultivars in central Santa FeFernández, Laura NoemíPodredumbre amargaManchas foliaresComplejo de especies C. gloeosporioidesManzanos de bajos requerimientos de fríoIdentificación molecularFungicidasBitter rotLeaf spotC. gloeosporioides species complexLow-chill apple cultivarsMolecular identificationFungicideFil: Fernández, Laura Noemí. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina.Bitter rot (BR), caused by Colletotrichum spp., is one of the prevalent fungal diseases of apple worldwide. Some Colletotrichum spp. also causes Glomerella leaf spot (GLS). The presence of BR was recorded in 2014 in the central region of Santa Fe, and leaf spots (LS) began to be seen in 2016 in three low-chill apple cultivars, ‘Eva’, ‘Princesa’ and ‘Caricia’. This thesis was focused to characterized the Colletotrichum species involved in these pathologies, studying aspects of epidemiology and pathogenesis and determined the sensitivity of isolates to fungicides. Thirty-four isolates from symptomatic fruits and leaves were obtained. Morphological characteristics in combination with multilocus analysis revealed that Colletotrichum siamense is the single species associated with BR and LS on low-chill apples in Santa Fe. Of the three cultivars evaluated, ‘Caricia’ was the most susceptible to BR. The registered LS have notable differences with typical GLS revealing that this disease is no present in the region. It was also determined that C. siamense survives in the form of conidia, mainly on the plant, and that it uses a hemibiotrophic mechanism to infect fruits and leaves. The isolates of C. siamense are sensitive to fungicides belonging to the methyl benzimidazole carbamate and demethylation inhibitors groups. These findings will be useful for future studies of sensitivity to fungicide in the field and to design management strategies for diseases caused by C. siamense in the region.Bitter rot (BR), caused by Colletotrichum spp., is one of the prevalent fungal diseases of apple worldwide. Some Colletotrichum spp. also causes Glomerella leaf spot (GLS). The presence of BR was recorded in 2014 in the central region of Santa Fe, and leaf spots (LS) began to be seen in 2016 in three low-chill apple cultivars, ‘Eva’, ‘Princesa’ and ‘Caricia’. This thesis was focused to characterized the Colletotrichum species involved in these pathologies, studying aspects of epidemiology and pathogenesis and determined the sensitivity of isolates to fungicides. Thirty-four isolates from symptomatic fruits and leaves were obtained. Morphological characteristics in combination with multilocus analysis revealed that Colletotrichum siamense is the single species associated with BR and LS on low-chill apples in Santa Fe. Of the three cultivars evaluated, ‘Caricia’ was the most susceptible to BR. The registered LS have notable differences with typical GLS revealing that this disease is no present in the region. It was also determined that C. siamense survives in the form of conidia, mainly on the plant, and that it uses a hemibiotrophic mechanism to infect fruits and leaves. The isolates of C. siamense are sensitive to fungicides belonging to the methyl benzimidazole carbamate and demethylation inhibitors groups. These findings will be useful for future studies of sensitivity to fungicide in the field and to design management strategies for diseases caused by C. siamense in the region.Consejo Nacional de Investigaciones Científicas y TécnicasUniversidad Nacional del LitoralMondino, Pedro EmilioSosa, María CristinaGaldeano, ErnestinaDel Valle, EleodoroFavaro, María Alejandra2023-06-05T13:00:39Z2023-02-13SNRDinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06info:ar-repo/semantics/tesisDoctoralapplication/pdfhttps://hdl.handle.net/11185/7146spainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.esreponame:Biblioteca Virtual (UNL)instname:Universidad Nacional del Litoralinstacron:UNL2025-09-29T14:30:44Zoai:https://bibliotecavirtual.unl.edu.ar:11185/7146Institucionalhttp://bibliotecavirtual.unl.edu.ar/Universidad públicaNo correspondeajdeba@unl.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:21872025-09-29 14:30:44.657Biblioteca Virtual (UNL) - Universidad Nacional del Litoralfalse |
dc.title.none.fl_str_mv |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe Identification and characterization of Colletotrichum species associated with leaf spots and bitter rot in low-chill apple cultivars in central Santa Fe |
title |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe |
spellingShingle |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe Fernández, Laura Noemí Podredumbre amarga Manchas foliares Complejo de especies C. gloeosporioides Manzanos de bajos requerimientos de frío Identificación molecular Fungicidas Bitter rot Leaf spot C. gloeosporioides species complex Low-chill apple cultivars Molecular identification Fungicide |
title_short |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe |
title_full |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe |
title_fullStr |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe |
title_full_unstemmed |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe |
title_sort |
Identificación y caracterización de especies de Colletotrichum asociadas a manchas foliares y podredumbre amarga en manzanos de bajos requerimientos de frío del centro de Santa Fe |
dc.creator.none.fl_str_mv |
Fernández, Laura Noemí |
author |
Fernández, Laura Noemí |
author_facet |
Fernández, Laura Noemí |
author_role |
author |
dc.contributor.none.fl_str_mv |
Mondino, Pedro Emilio Sosa, María Cristina Galdeano, Ernestina Del Valle, Eleodoro Favaro, María Alejandra |
dc.subject.none.fl_str_mv |
Podredumbre amarga Manchas foliares Complejo de especies C. gloeosporioides Manzanos de bajos requerimientos de frío Identificación molecular Fungicidas Bitter rot Leaf spot C. gloeosporioides species complex Low-chill apple cultivars Molecular identification Fungicide |
topic |
Podredumbre amarga Manchas foliares Complejo de especies C. gloeosporioides Manzanos de bajos requerimientos de frío Identificación molecular Fungicidas Bitter rot Leaf spot C. gloeosporioides species complex Low-chill apple cultivars Molecular identification Fungicide |
dc.description.none.fl_txt_mv |
Fil: Fernández, Laura Noemí. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina. Bitter rot (BR), caused by Colletotrichum spp., is one of the prevalent fungal diseases of apple worldwide. Some Colletotrichum spp. also causes Glomerella leaf spot (GLS). The presence of BR was recorded in 2014 in the central region of Santa Fe, and leaf spots (LS) began to be seen in 2016 in three low-chill apple cultivars, ‘Eva’, ‘Princesa’ and ‘Caricia’. This thesis was focused to characterized the Colletotrichum species involved in these pathologies, studying aspects of epidemiology and pathogenesis and determined the sensitivity of isolates to fungicides. Thirty-four isolates from symptomatic fruits and leaves were obtained. Morphological characteristics in combination with multilocus analysis revealed that Colletotrichum siamense is the single species associated with BR and LS on low-chill apples in Santa Fe. Of the three cultivars evaluated, ‘Caricia’ was the most susceptible to BR. The registered LS have notable differences with typical GLS revealing that this disease is no present in the region. It was also determined that C. siamense survives in the form of conidia, mainly on the plant, and that it uses a hemibiotrophic mechanism to infect fruits and leaves. The isolates of C. siamense are sensitive to fungicides belonging to the methyl benzimidazole carbamate and demethylation inhibitors groups. These findings will be useful for future studies of sensitivity to fungicide in the field and to design management strategies for diseases caused by C. siamense in the region. Bitter rot (BR), caused by Colletotrichum spp., is one of the prevalent fungal diseases of apple worldwide. Some Colletotrichum spp. also causes Glomerella leaf spot (GLS). The presence of BR was recorded in 2014 in the central region of Santa Fe, and leaf spots (LS) began to be seen in 2016 in three low-chill apple cultivars, ‘Eva’, ‘Princesa’ and ‘Caricia’. This thesis was focused to characterized the Colletotrichum species involved in these pathologies, studying aspects of epidemiology and pathogenesis and determined the sensitivity of isolates to fungicides. Thirty-four isolates from symptomatic fruits and leaves were obtained. Morphological characteristics in combination with multilocus analysis revealed that Colletotrichum siamense is the single species associated with BR and LS on low-chill apples in Santa Fe. Of the three cultivars evaluated, ‘Caricia’ was the most susceptible to BR. The registered LS have notable differences with typical GLS revealing that this disease is no present in the region. It was also determined that C. siamense survives in the form of conidia, mainly on the plant, and that it uses a hemibiotrophic mechanism to infect fruits and leaves. The isolates of C. siamense are sensitive to fungicides belonging to the methyl benzimidazole carbamate and demethylation inhibitors groups. These findings will be useful for future studies of sensitivity to fungicide in the field and to design management strategies for diseases caused by C. siamense in the region. Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Nacional del Litoral |
description |
Fil: Fernández, Laura Noemí. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-06-05T13:00:39Z 2023-02-13 |
dc.type.none.fl_str_mv |
SNRD info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/acceptedVersion http://purl.org/coar/resource_type/c_db06 info:ar-repo/semantics/tesisDoctoral |
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doctoralThesis |
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acceptedVersion |
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https://hdl.handle.net/11185/7146 |
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info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es |
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openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es |
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