Original Paper

Mycotoxin Research

, Volume 28, Issue 2, pp 89-96

Mycotoxins produced by Fusarium spp. associated with Fusarium head blight of wheat in Western Australia

  • Diana C. TanAffiliated withSchool of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western Australia
  • , Gavin R. FlemattiAffiliated withSchool of Biomedical, Biomolecular and Chemical Sciences, Faculty of Life and Physical Sciences, The University of Western Australia
  • , Emilio L. GhisalbertiAffiliated withSchool of Biomedical, Biomolecular and Chemical Sciences, Faculty of Life and Physical Sciences, The University of Western Australia
  • , Krishnapillai SivasithamparamAffiliated withSchool of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western Australia
  • , Sukumar ChakrabortyAffiliated withCSIRO Plant Industry
  • , Friday ObanorAffiliated withCSIRO Plant Industry
  • , Kithsiri JayasenaAffiliated withSchool of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western AustraliaDepartment of Agriculture and Food Western Australia
  • , Martin J. BarbettiAffiliated withSchool of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western AustraliaThe UWA Institute of Agriculture, The University of Western Australia Email author 

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Abstract

An isolated occurrence of Fusarium head blight (FHB) of wheat was detected in the south-west region of Western Australia during the 2003 harvest season. The molecular identity of 23 isolates of Fusarium spp. collected from this region during the FHB outbreak confirmed the associated pathogens to be F. graminearum, F. acuminatum or F. tricinctum. Moreover, the toxicity of their crude extracts from Czapek-Dox liquid broth and millet seed cultures to brine shrimp (Artemia franciscana) was associated with high mortality levels. The main mycotoxins detected were type B trichothecenes (deoxynivalenol and 3-acetyldeoxynivalenol), enniatins, chlamydosporol and zearalenone. This study is the first report on the mycotoxin profiles of Fusarium spp. associated with FHB of wheat in Western Australia. This study highlights the need for monitoring not just for the presence of the specific Fusarium spp. present in any affected grain but also for their potential mycotoxin and other toxic secondary metabolites.

Keywords

Mycotoxin Trichothecene Enniatin Chlamydosporol Zearalenone Fusarium graminearum Fusarium acuminatum Fusarium tricinctum