Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat...

Autores
Malbrán, Ismael; Mourelos, Cecilia Alejandra; Girotti, Juan Roberto; Balatti, Pedro Alberto; Lori, Gladys Albina
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
At least 20 epidemics of Fusarium head blight (FHB) of wheat have been registered in the last 50 years in Argentina, with variable intensity. Damage induced by the disease is further aggravated by the presence of mycotoxins in affected grains that may cause health problems to humans and animals. The trichothecene chemotype was analyzed for 112 isolates of Fusarium graminearum from Argentina by polymerase chain reaction and two field trials were conducted to study the aggressiveness of a subsample of 14 representative isolates and to analyze deoxynivalenol (DON) production in planta and in vitro. All isolates belonged to the 15-acetyl-DON chemotype. Significant differences were observed in both the symptom severity induced in wheat spikes and the in vivoDON pro-duction, and a close correlation was found between these two variables. However, in vitro toxigenic potential was not correlated with the capacity of F. graminearum isolates to produce DON under natural conditions. The progress of infectionin the rachis of inoculated wheat spikes was analyzed and the pathogen presence verified in both symptomatic and symptomless spikes. Even isolates with a limited capacity to induce symptoms were able to colonize the vascular tissue and to produce considerable amounts of DON in planta.
Facultad de Ciencias Agrarias y Forestales
Materia
Ciencias Agrarias
Hongos
Argentina
Enfermedades de las Plantas
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/66683
Acceder
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network_name_str SEDICI (UNLP)
spelling Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat SpikeMalbrán, IsmaelMourelos, Cecilia AlejandraGirotti, Juan RobertoBalatti, Pedro AlbertoLori, Gladys AlbinaCiencias AgrariasHongosArgentinaEnfermedades de las PlantasAt least 20 epidemics of Fusarium head blight (FHB) of wheat have been registered in the last 50 years in Argentina, with variable intensity. Damage induced by the disease is further aggravated by the presence of mycotoxins in affected grains that may cause health problems to humans and animals. The trichothecene chemotype was analyzed for 112 isolates of Fusarium graminearum from Argentina by polymerase chain reaction and two field trials were conducted to study the aggressiveness of a subsample of 14 representative isolates and to analyze deoxynivalenol (DON) production in planta and in vitro. All isolates belonged to the 15-acetyl-DON chemotype. Significant differences were observed in both the symptom severity induced in wheat spikes and the in vivoDON pro-duction, and a close correlation was found between these two variables. However, in vitro toxigenic potential was not correlated with the capacity of F. graminearum isolates to produce DON under natural conditions. The progress of infectionin the rachis of inoculated wheat spikes was analyzed and the pathogen presence verified in both symptomatic and symptomless spikes. Even isolates with a limited capacity to induce symptoms were able to colonize the vascular tissue and to produce considerable amounts of DON in planta.Facultad de Ciencias Agrarias y Forestales2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf357-364http://sedici.unlp.edu.ar/handle/10915/66683enginfo:eu-repo/semantics/altIdentifier/url/https://apsjournals.apsnet.org/doi/10.1094/PHYTO-06-13-0172-Rinfo:eu-repo/semantics/altIdentifier/issn/1943-7684info:eu-repo/semantics/altIdentifier/doi/10.1094/PHYTO-06-13-0172-Rinfo: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:UNLP2025-10-15T11:02:03Zoai:sedici.unlp.edu.ar:10915/66683Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:02:03.454SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
title Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
spellingShingle Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
Malbrán, Ismael
Ciencias Agrarias
Hongos
Argentina
Enfermedades de las Plantas
title_short Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
title_full Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
title_fullStr Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
title_full_unstemmed Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
title_sort Toxigenic Capacity and Trichothecene Production by <i>Fusarium graminearum</i> Isolates from Argentina and Their Relationship with Aggressiveness and Fungal Expansion in the Wheat Spike
dc.creator.none.fl_str_mv Malbrán, Ismael
Mourelos, Cecilia Alejandra
Girotti, Juan Roberto
Balatti, Pedro Alberto
Lori, Gladys Albina
author Malbrán, Ismael
author_facet Malbrán, Ismael
Mourelos, Cecilia Alejandra
Girotti, Juan Roberto
Balatti, Pedro Alberto
Lori, Gladys Albina
author_role author
author2 Mourelos, Cecilia Alejandra
Girotti, Juan Roberto
Balatti, Pedro Alberto
Lori, Gladys Albina
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Agrarias
Hongos
Argentina
Enfermedades de las Plantas
topic Ciencias Agrarias
Hongos
Argentina
Enfermedades de las Plantas
dc.description.none.fl_txt_mv At least 20 epidemics of Fusarium head blight (FHB) of wheat have been registered in the last 50 years in Argentina, with variable intensity. Damage induced by the disease is further aggravated by the presence of mycotoxins in affected grains that may cause health problems to humans and animals. The trichothecene chemotype was analyzed for 112 isolates of Fusarium graminearum from Argentina by polymerase chain reaction and two field trials were conducted to study the aggressiveness of a subsample of 14 representative isolates and to analyze deoxynivalenol (DON) production in planta and in vitro. All isolates belonged to the 15-acetyl-DON chemotype. Significant differences were observed in both the symptom severity induced in wheat spikes and the in vivoDON pro-duction, and a close correlation was found between these two variables. However, in vitro toxigenic potential was not correlated with the capacity of F. graminearum isolates to produce DON under natural conditions. The progress of infectionin the rachis of inoculated wheat spikes was analyzed and the pathogen presence verified in both symptomatic and symptomless spikes. Even isolates with a limited capacity to induce symptoms were able to colonize the vascular tissue and to produce considerable amounts of DON in planta.
Facultad de Ciencias Agrarias y Forestales
description At least 20 epidemics of Fusarium head blight (FHB) of wheat have been registered in the last 50 years in Argentina, with variable intensity. Damage induced by the disease is further aggravated by the presence of mycotoxins in affected grains that may cause health problems to humans and animals. The trichothecene chemotype was analyzed for 112 isolates of Fusarium graminearum from Argentina by polymerase chain reaction and two field trials were conducted to study the aggressiveness of a subsample of 14 representative isolates and to analyze deoxynivalenol (DON) production in planta and in vitro. All isolates belonged to the 15-acetyl-DON chemotype. Significant differences were observed in both the symptom severity induced in wheat spikes and the in vivoDON pro-duction, and a close correlation was found between these two variables. However, in vitro toxigenic potential was not correlated with the capacity of F. graminearum isolates to produce DON under natural conditions. The progress of infectionin the rachis of inoculated wheat spikes was analyzed and the pathogen presence verified in both symptomatic and symptomless spikes. Even isolates with a limited capacity to induce symptoms were able to colonize the vascular tissue and to produce considerable amounts of DON in planta.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/66683
url http://sedici.unlp.edu.ar/handle/10915/66683
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://apsjournals.apsnet.org/doi/10.1094/PHYTO-06-13-0172-R
info:eu-repo/semantics/altIdentifier/issn/1943-7684
info:eu-repo/semantics/altIdentifier/doi/10.1094/PHYTO-06-13-0172-R
dc.rights.none.fl_str_mv 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)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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