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Phylogenetic analyses and toxigenic profiles of Fusarium equiseti and Fusarium acuminatum isolated from cereals from Southern Europe
Marín, Patricia and Moretti, Antonio and Ritieni, Alberto and Jurado García-Posada, Miguel and Vázquez, Covadonga and González Jaén, María Teresa
Phylogenetic analyses and toxigenic profiles of Fusarium equiseti and Fusarium acuminatum isolated from cereals from Southern Europe.
"Food Microbiology", v. 31
||Phylogenetic analyses and toxigenic profiles of Fusarium equiseti and Fusarium acuminatum isolated from cereals from Southern Europe
Jurado García-Posada, Miguel
González Jaén, María Teresa
|Título de Revista/Publicación:
||E.U.I.T. Agrícolas (UPM)
||Ciencia y Tecnología Aplicadas a la Ingeniería Técnica Agrícola [hasta 2014]
|Creative Commons Licenses:
||Recognition - No derivative works - Non commercial
Fusarium equiseti and Fusarium acuminatum are toxigenic species that contaminate cereal crops from
diverse climatic regions. They are common in Spanish cereals. The information available on their
phylogenetics and toxigenic profiles is, however, insufficient to assist risk evaluation. In this work,
phylogenetic analyses were performed using partial sequences of the translation elongation factor gene
(EF-1a) of F. equiseti and F. acuminatum strains isolated from barley and wheat from Spain and other
countries. The Northern and Southern European F. equiseti strains largely separated into two phylogenetically
distinct clusters. This suggests the existence of two distinct populations within this species,
explaining its presence in these regions of markedly different climate. Production of type A and B
trichothecenes by the Spanish strains, examined in wheat cultures using a multitoxin analytical method,
indicated that F. equiseti could produce deoxynivalenol and nivalenol and other trichothecenes, at
concentrations that might represent a significant risk of toxin contamination for Southern European
cereals. F. acuminatum showed low intraspecific genetic variability and 58% of the strains could produce
deoxynivalenol at low level. Neither species was found to produce T-2 or HT-2 toxins. The present results
provide important phylogenetic and toxigenic information essential for the accurate prediction of
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