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Abstract:

A mycological survey was carried out on rice samples harvested in 1997 and 1998 from Entre Rios province, belonging to the main production area of Argentina. The relative density and isolation frequency of the prevalent fungi were statistically compared between locations and harvest seasons. The genus Alternaria was the most prevalent component of the internal seedborne mycoflora in the two harvest seasons. Fungi belonging to the genera Phoma, Fusarium, Microdochium, Penicillium and Aspergillus were also isolated. The predominant species of these genera were Alternaria alternata, Phoma glomerata, Fusarium graminearum, Microdochium nivale, Penicillium citrinum and Aspergillus flavus. F graminearum and M nivale cultures (18 of each) were screened to determine their ability to produce different trichothecenes and zearalenone. Most (13/18) isolates of F graminearum produced deoxynivalenol (17.3-943.0 ppm), 1/18 nivalenol (5.8 ppm), 3/18 3-acetyl-deoxynivalenol (0.6-1.7 ppm), 1/18 T-2 triol (0.3 ppm) and 4/18 zearalenone (28.5-55.6 ppm). Only chemotype IA (deoxynivalenol and 3-acetyl-deoxynivalenol) was observed. Isolates of M nivale (4/18) produced deoxynivalenol (139.0-731.0 ppb) and 3/18 zearalenone (51.8-63.5 ppm).

Registro:

Documento: Artículo
Título:Fungi associated with rice at Entre Rios province, Argentina. Toxigenic capacity of Fusarium graminearum and Microdochium nivale isolates
Autor:Broggi, L.E.; Moltó, G.A.
Filiación:Facultad de Bromatología, Universidad de Entre Ríos, Argentina
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Año:2001
Volumen:17
Número:2
Página de inicio:96
Página de fin:107
DOI: http://dx.doi.org/10.1007/BF02946132
Título revista:Mycotoxin Research
Título revista abreviado:Mycotoxin Res.
ISSN:01787888
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01787888_v17_n2_p96_Broggi

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Citas:

---------- APA ----------
Broggi, L.E. & Moltó, G.A. (2001) . Fungi associated with rice at Entre Rios province, Argentina. Toxigenic capacity of Fusarium graminearum and Microdochium nivale isolates. Mycotoxin Research, 17(2), 96-107.
http://dx.doi.org/10.1007/BF02946132
---------- CHICAGO ----------
Broggi, L.E., Moltó, G.A. "Fungi associated with rice at Entre Rios province, Argentina. Toxigenic capacity of Fusarium graminearum and Microdochium nivale isolates" . Mycotoxin Research 17, no. 2 (2001) : 96-107.
http://dx.doi.org/10.1007/BF02946132
---------- MLA ----------
Broggi, L.E., Moltó, G.A. "Fungi associated with rice at Entre Rios province, Argentina. Toxigenic capacity of Fusarium graminearum and Microdochium nivale isolates" . Mycotoxin Research, vol. 17, no. 2, 2001, pp. 96-107.
http://dx.doi.org/10.1007/BF02946132
---------- VANCOUVER ----------
Broggi, L.E., Moltó, G.A. Fungi associated with rice at Entre Rios province, Argentina. Toxigenic capacity of Fusarium graminearum and Microdochium nivale isolates. Mycotoxin Res. 2001;17(2):96-107.
http://dx.doi.org/10.1007/BF02946132