Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole
- Autores
- Bárcena, Alejandra; Petroselli, Gabriela; Velasquez, Silvia M.; Estevez, José M.; Erra-Balsells, Rosa; Balatti, Pedro Alberto; Saparrat, Mario Carlos Nazareno
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Pseudocercospora griseola, an anamorph of Mycosphaerella, causes Angular Leaf Spot (ALS). The mycelia and conidia from P. griseola are coloured due to the synthesis of 1,8 dihydroxynaphthalene (DHN)-melanin. The aim of this work was to identify in P. griseola f. mesoamericana isolate T4, a highly pigmented fungus, intermediary compounds as a result of the inhibition of melanin synthesis by tricyclazole, and to analyze at the structural level the localization of these dark pigments. The main metabolites were analyzed using ultraviolet matrix-assisted laser desorption-ionization mass spectrometry (UV–MALDI MS). Tricyclazole affected P. griseola f. mesoamericana in several different ways. The most evident effect was the reduction of melanin synthesis, and therefore diffusible shunt products were found and identified. Flaviolin was the main intermediate metabolite found in cultures supplemented with tricyclazole. This inhibitor, which affected pigmentation and the cell wall structure of mycelium, revealed macroscopically by the reduction in growth, decreased the stratification and deposition of melanin in the hyphal wall. These results suggest a possible role of tricyclazole to control ALS.
Facultad de Ciencias Naturales y Museo
Instituto de Fisiología Vegetal
Centro de Investigaciones en Fitopatología
Instituto de Botánica "Dr. Carlos Spegazzini"
Facultad de Ciencias Agrarias y Forestales - Materia
-
Ciencias Naturales
Pseudocercospora griseola f. mesoamericana
Phaseolus vulgaris
Melanin
Tricyclazole
UV-MALDI-TOFMS
Microscopy
FTIR - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/130754
Ver los metadatos del registro completo
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Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to TricyclazoleBárcena, AlejandraPetroselli, GabrielaVelasquez, Silvia M.Estevez, José M.Erra-Balsells, RosaBalatti, Pedro AlbertoSaparrat, Mario Carlos NazarenoCiencias NaturalesPseudocercospora griseola f. mesoamericanaPhaseolus vulgarisMelaninTricyclazoleUV-MALDI-TOFMSMicroscopyFTIR<i>Pseudocercospora griseola</i>, an anamorph of <i>Mycosphaerella</i>, causes Angular Leaf Spot (ALS). The mycelia and conidia from <i>P. griseola</i> are coloured due to the synthesis of 1,8 dihydroxynaphthalene (DHN)-melanin. The aim of this work was to identify in <i>P. griseola f. mesoamericana</i> isolate T4, a highly pigmented fungus, intermediary compounds as a result of the inhibition of melanin synthesis by tricyclazole, and to analyze at the structural level the localization of these dark pigments. The main metabolites were analyzed using ultraviolet matrix-assisted laser desorption-ionization mass spectrometry (UV–MALDI MS). Tricyclazole affected <i>P. griseola f. mesoamericana</i> in several different ways. The most evident effect was the reduction of melanin synthesis, and therefore diffusible shunt products were found and identified. Flaviolin was the main intermediate metabolite found in cultures supplemented with tricyclazole. This inhibitor, which affected pigmentation and the cell wall structure of mycelium, revealed macroscopically by the reduction in growth, decreased the stratification and deposition of melanin in the hyphal wall. These results suggest a possible role of tricyclazole to control ALS.Facultad de Ciencias Naturales y MuseoInstituto de Fisiología VegetalCentro de Investigaciones en FitopatologíaInstituto de Botánica "Dr. Carlos Spegazzini"Facultad de Ciencias Agrarias y Forestales2015-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/130754enginfo:eu-repo/semantics/altIdentifier/issn/1617-416Xinfo:eu-repo/semantics/altIdentifier/issn/1861-8952info:eu-repo/semantics/altIdentifier/doi/10.1007/s11557-015-1102-7info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:37Zoai:sedici.unlp.edu.ar:10915/130754Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:38.066SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole |
title |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole |
spellingShingle |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole Bárcena, Alejandra Ciencias Naturales Pseudocercospora griseola f. mesoamericana Phaseolus vulgaris Melanin Tricyclazole UV-MALDI-TOFMS Microscopy FTIR |
title_short |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole |
title_full |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole |
title_fullStr |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole |
title_full_unstemmed |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole |
title_sort |
Response of the fungus <i>Pseudocercospora griseola f. mesoamericana</i> to Tricyclazole |
dc.creator.none.fl_str_mv |
Bárcena, Alejandra Petroselli, Gabriela Velasquez, Silvia M. Estevez, José M. Erra-Balsells, Rosa Balatti, Pedro Alberto Saparrat, Mario Carlos Nazareno |
author |
Bárcena, Alejandra |
author_facet |
Bárcena, Alejandra Petroselli, Gabriela Velasquez, Silvia M. Estevez, José M. Erra-Balsells, Rosa Balatti, Pedro Alberto Saparrat, Mario Carlos Nazareno |
author_role |
author |
author2 |
Petroselli, Gabriela Velasquez, Silvia M. Estevez, José M. Erra-Balsells, Rosa Balatti, Pedro Alberto Saparrat, Mario Carlos Nazareno |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Pseudocercospora griseola f. mesoamericana Phaseolus vulgaris Melanin Tricyclazole UV-MALDI-TOFMS Microscopy FTIR |
topic |
Ciencias Naturales Pseudocercospora griseola f. mesoamericana Phaseolus vulgaris Melanin Tricyclazole UV-MALDI-TOFMS Microscopy FTIR |
dc.description.none.fl_txt_mv |
<i>Pseudocercospora griseola</i>, an anamorph of <i>Mycosphaerella</i>, causes Angular Leaf Spot (ALS). The mycelia and conidia from <i>P. griseola</i> are coloured due to the synthesis of 1,8 dihydroxynaphthalene (DHN)-melanin. The aim of this work was to identify in <i>P. griseola f. mesoamericana</i> isolate T4, a highly pigmented fungus, intermediary compounds as a result of the inhibition of melanin synthesis by tricyclazole, and to analyze at the structural level the localization of these dark pigments. The main metabolites were analyzed using ultraviolet matrix-assisted laser desorption-ionization mass spectrometry (UV–MALDI MS). Tricyclazole affected <i>P. griseola f. mesoamericana</i> in several different ways. The most evident effect was the reduction of melanin synthesis, and therefore diffusible shunt products were found and identified. Flaviolin was the main intermediate metabolite found in cultures supplemented with tricyclazole. This inhibitor, which affected pigmentation and the cell wall structure of mycelium, revealed macroscopically by the reduction in growth, decreased the stratification and deposition of melanin in the hyphal wall. These results suggest a possible role of tricyclazole to control ALS. Facultad de Ciencias Naturales y Museo Instituto de Fisiología Vegetal Centro de Investigaciones en Fitopatología Instituto de Botánica "Dr. Carlos Spegazzini" Facultad de Ciencias Agrarias y Forestales |
description |
<i>Pseudocercospora griseola</i>, an anamorph of <i>Mycosphaerella</i>, causes Angular Leaf Spot (ALS). The mycelia and conidia from <i>P. griseola</i> are coloured due to the synthesis of 1,8 dihydroxynaphthalene (DHN)-melanin. The aim of this work was to identify in <i>P. griseola f. mesoamericana</i> isolate T4, a highly pigmented fungus, intermediary compounds as a result of the inhibition of melanin synthesis by tricyclazole, and to analyze at the structural level the localization of these dark pigments. The main metabolites were analyzed using ultraviolet matrix-assisted laser desorption-ionization mass spectrometry (UV–MALDI MS). Tricyclazole affected <i>P. griseola f. mesoamericana</i> in several different ways. The most evident effect was the reduction of melanin synthesis, and therefore diffusible shunt products were found and identified. Flaviolin was the main intermediate metabolite found in cultures supplemented with tricyclazole. This inhibitor, which affected pigmentation and the cell wall structure of mycelium, revealed macroscopically by the reduction in growth, decreased the stratification and deposition of melanin in the hyphal wall. These results suggest a possible role of tricyclazole to control ALS. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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http://sedici.unlp.edu.ar/handle/10915/130754 |
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eng |
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eng |
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