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Título

Ergovaline occurrence in grasses infected by fungal endophytes of semi-arid pastures in Spain

AutorVázquez de Aldana, Beatriz R. ; Zabalgogeazcoa, Iñigo; García Ciudad, Antonia ; García Criado, Balbino
Palabras claveergovaline
mycotoxins
endophytes
Neotyphodium
Epichloë
dehesa grasslands
Fecha de publicación2003
EditorJohn Wiley & Sons
CitaciónJournal of the Science of Food and Agriculture 83: 347-353 (2003)
ResumenErgovaline is a mycotoxin produced by fungal endophytes belonging to Neotyphodium and Epichloë spp in several host grass species. Due to the production of this alkaloid, the ingestion of endophyte infected grasses cause toxicosis in grazing animals. The aim of this work was to determine if ergovaline is produced in several grasses (Agrostis castellana Boiss and Reuter, Brachypodium phoenicoides (L) Roemer and Schultes, Dactylis glomerata L, Festuca arundinacea Schreb, Festuca arundinacea Schreb subsp fenas (Lag) Arcangeli, Festuca ovina L, Festuca rubra L, Holcus lanatus L, and Lolium perenne L) infected by fungal endophytes in “dehesa” pastures in Spain. Forage and seed samples of several ecotypes of these grass species were analysed for the ergovaline content by HPLC with fluorescence detection. The ergovaline content in F arundinacea ranged between 0.03-0.85 μg g-1 in forage and 0.28-3.17 μg g-1 in seed samples, in F rubra ranged between 0-0.08 μg g-1 in forage and 0.02-0.19 μg g-1 in seed samples, in H lanatus ranged between 0-0.02 μg g-1 in forage samples and in one ecotype of F ovina was 0.11 μg g-1. All the nine ecotypes of F rubra had ergovaline in seeds, however in three ecotypes the alkaloid was not detected in forage samples. No ergovaline was detected in the other four endophyte infected grasses analysed. The ergovaline content should be a considered as an antiquality component of these pastures.
Versión del editorhttp://www3.interscience.wiley.com/journal/102530851/abstract
URI10261/13741
DOIDOI:10.1002/jsfa.1319
ISSNISSN: 0022-5142
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