Mycopathologia

, Volume 109, Issue 3, pp 165–170 | Cite as

Patterns of mycotoxin production by Fusarium gmminearum isolated from Argentine wheat

  • Graciela C. Faifer
  • Mauricia Sala De Miguel
  • Hector M. Godoy
Article

Abstract

Fusarium graminearum was isolated from several wheat samples of the 1985/86 Argentine crop, taken from lots that had suffered extensive invasion by this fungus. Previous chemical analysis of the cereal, had revealed contamination with deoxynivalenol (DON), but the presence of the other mycotoxins could not be excluded with certainty, due to the low sensitivity of the analytical methodology employed.

Twenty four F. graminearum isolates were grown on white corn with 50% water, for 21 days at 28 °C, or in liquid medium (Sucrose 3%, Peptone 0,1% and Yeast Extract 0,1%) for 7 days at 28 °C without shaking, and tested for the production of mycotoxins. Eight isolates (33% of the total) were found to produce toxins in one or both media. Toxins detected were: DON (6 isolates), 15-AcetylDON (5), 3-AcetylDON (2) and Zearalenone (3). No traces of Nivalenol, Fusarenon-X or other trichothecenes were found.

These results suggest that strains of F. graminearum, prevailing in Argentine wheat-growing regions, might belong to the DON/AcetylDON chemotype, since no organisms of the Nivalenol/Fusarenon-X chemotype were detected in this study.

Key words

deoxynivalenol Fusarium graminearum mycotoxins nivalenol trichothecenes Zearalenone 

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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Graciela C. Faifer
    • 2
  • Mauricia Sala De Miguel
    • 1
  • Hector M. Godoy
    • 3
    • 1
  1. 1.Laboratorio de Micotoxinas, Departamento de Microbiología AgrícolaInstitute National de Tecnología AgropecuariaBuenos AiresArgentina
  2. 2.Fellow of the Comisión de Investigaciones CientíficasProvincia de Buenos AiresArgentina
  3. 3.Career Investigator of the Comisión de Investigaciones CientíficasProvincia de Buenos AiresArgentina

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