Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina

The principal agents of Fusarium head blight in the main cropping area of Argentina were investigated in heavily infected samples. The ability of the isolates to produce trichothecenes was determined by GC and HPLC. Fusarium graminearum was the predominant species and of 33 isolates, 10 produced deo...

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Autor principal: Basilico, Juan Carlos
Publicado: 2008
Materias:
Fusarium
Nivalenol
Toxicogenic potential
Trichotecenes
Gibberella zeae
Triticum aestivum
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15178382_v39_n1_p157_FernandezPinto
http://hdl.handle.net/20.500.12110/paper_15178382_v39_n1_p157_FernandezPinto
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_15178382_v39_n1_p157_FernandezPinto
record_format dspace
spelling paper:paper_15178382_v39_n1_p157_FernandezPinto2023-06-08T16:18:42Z Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina Basilico, Juan Carlos Fusarium Nivalenol Toxicogenic potential Trichotecenes Fusarium Gibberella zeae Triticum aestivum The principal agents of Fusarium head blight in the main cropping area of Argentina were investigated in heavily infected samples. The ability of the isolates to produce trichothecenes was determined by GC and HPLC. Fusarium graminearum was the predominant species and of 33 isolates, 10 produced deoxinivalenol (DON) (0.1- 29 mg kg-1), 13 produced both deoxinivalenol (1.0- 708 mg kg-1) and nivalenol (0.1- 6.2mg kg -1), 12 produced 3-acetyldeoxinivalenol (0.1- 14 mg kg-1), 13 produced 15-acetyldeoxinivalenol (0.1- 1.9 mg kg-1), 10 produced Fusarenone X (0.1- 2.4 mg kg-1) and 7 produced zearalenone (0.1- 0.6 mg kg-1). These results suggest that F. graminearum strains isolated from the wheat growing regions in Argentina belong to DON chemotype. Although some strains produced both deoxinivalenol and nivalenol, nivalenol was produced in lower levels. The natural occurrence of nivalenol in wheat affected by head-blight collected in the main production area during two years (2001-2002) was also determined. From 19 samples 13 were contaminated with deoxinivalenol in a range of 0.3 to 70 mg kg-1 and 2 samples with both deoxinivalenol (7.5 and 6.7 mg kg-1) and nivalenol (0.05 and 0.1 mg kg -1), respectively. This is the first report of natural occurrence of nivalenol in wheat cultivate in Argentina. Fil:Basilico, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15178382_v39_n1_p157_FernandezPinto http://hdl.handle.net/20.500.12110/paper_15178382_v39_n1_p157_FernandezPinto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Fusarium
Nivalenol
Toxicogenic potential
Trichotecenes
Fusarium
Gibberella zeae
Triticum aestivum
spellingShingle Fusarium
Nivalenol
Toxicogenic potential
Trichotecenes
Fusarium
Gibberella zeae
Triticum aestivum
Basilico, Juan Carlos
Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina
topic_facet Fusarium
Nivalenol
Toxicogenic potential
Trichotecenes
Fusarium
Gibberella zeae
Triticum aestivum
description The principal agents of Fusarium head blight in the main cropping area of Argentina were investigated in heavily infected samples. The ability of the isolates to produce trichothecenes was determined by GC and HPLC. Fusarium graminearum was the predominant species and of 33 isolates, 10 produced deoxinivalenol (DON) (0.1- 29 mg kg-1), 13 produced both deoxinivalenol (1.0- 708 mg kg-1) and nivalenol (0.1- 6.2mg kg -1), 12 produced 3-acetyldeoxinivalenol (0.1- 14 mg kg-1), 13 produced 15-acetyldeoxinivalenol (0.1- 1.9 mg kg-1), 10 produced Fusarenone X (0.1- 2.4 mg kg-1) and 7 produced zearalenone (0.1- 0.6 mg kg-1). These results suggest that F. graminearum strains isolated from the wheat growing regions in Argentina belong to DON chemotype. Although some strains produced both deoxinivalenol and nivalenol, nivalenol was produced in lower levels. The natural occurrence of nivalenol in wheat affected by head-blight collected in the main production area during two years (2001-2002) was also determined. From 19 samples 13 were contaminated with deoxinivalenol in a range of 0.3 to 70 mg kg-1 and 2 samples with both deoxinivalenol (7.5 and 6.7 mg kg-1) and nivalenol (0.05 and 0.1 mg kg -1), respectively. This is the first report of natural occurrence of nivalenol in wheat cultivate in Argentina.
author Basilico, Juan Carlos
author_facet Basilico, Juan Carlos
author_sort Basilico, Juan Carlos
title Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina
title_short Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina
title_full Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina
title_fullStr Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina
title_full_unstemmed Natural occurrence of nivalenol and mycotoxigenic potential of Fusarium graminearum strains in wheat affected by head blight in Argentina
title_sort natural occurrence of nivalenol and mycotoxigenic potential of fusarium graminearum strains in wheat affected by head blight in argentina
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15178382_v39_n1_p157_FernandezPinto
http://hdl.handle.net/20.500.12110/paper_15178382_v39_n1_p157_FernandezPinto
work_keys_str_mv AT basilicojuancarlos naturaloccurrenceofnivalenolandmycotoxigenicpotentialoffusariumgraminearumstrainsinwheataffectedbyheadblightinargentina
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