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
Biblioteca Virtual (UNL)
Institución
Universidad Nacional del Litoral
OAI Identificador
oai:https://bibliotecavirtual.unl.edu.ar:11185/7146

id UNLBT_eccdb8a2aa68b163626342cd501056d5
oai_identifier_str oai:https://bibliotecavirtual.unl.edu.ar:11185/7146
network_acronym_str UNLBT
repository_id_str 2187
network_name_str Biblioteca Virtual (UNL)
spelling 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
format doctoralThesis
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11185/7146
url https://hdl.handle.net/11185/7146
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Biblioteca Virtual (UNL)
instname:Universidad Nacional del Litoral
instacron:UNL
reponame_str Biblioteca Virtual (UNL)
collection Biblioteca Virtual (UNL)
instname_str Universidad Nacional del Litoral
instacron_str UNL
institution UNL
repository.name.fl_str_mv Biblioteca Virtual (UNL) - Universidad Nacional del Litoral
repository.mail.fl_str_mv jdeba@unl.edu.ar
_version_ 1844621949303521280
score 12.559606