Phylogenetic analyses and toxigenic profiles of Fusarium equiseti and Fusarium acuminatum isolated from cereals from Southern Europe

Marín, Patricia; Moretti, Antonio; Ritieni, Alberto; Jurado García-Posada, Miguel; Vázquez, Covadonga y González Jaén, María Teresa (2012). Phylogenetic analyses and toxigenic profiles of Fusarium equiseti and Fusarium acuminatum isolated from cereals from Southern Europe. "Food Microbiology", v. 31 (n. 2); pp. 229-237. ISSN 0740-0020.

Descripción

Título: Phylogenetic analyses and toxigenic profiles of Fusarium equiseti and Fusarium acuminatum isolated from cereals from Southern Europe
Autor/es:
  • Marín, Patricia
  • Moretti, Antonio
  • Ritieni, Alberto
  • Jurado García-Posada, Miguel
  • Vázquez, Covadonga
  • González Jaén, María Teresa
Tipo de Documento: Artículo
Título de Revista/Publicación: Food Microbiology
Fecha: Septiembre 2012
Volumen: 31
Materias:
Escuela: E.U.I.T. Agrícolas (UPM)
Departamento: Ciencia y Tecnología Aplicadas a la Ingeniería Técnica Agrícola [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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 toxigenic risk.

Más información

ID de Registro: 15828
Identificador DC: http://oa.upm.es/15828/
Identificador OAI: oai:oa.upm.es:15828
Depositado por: Memoria Investigacion
Depositado el: 17 Jul 2013 08:04
Ultima Modificación: 21 Abr 2016 16:08
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