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European Journal of Plant Pathology (2008) 122, 265-276
Susanne Vogelgsang, Michael Sulyok, Andreas Hecker, Eveline Jenny, Rudolf Krska, Rainer Schuhmacher and Hans-Rudolf Forrer (2008)
Toxigenicity and pathogenicity of Fusarium poae and Fusarium avenaceum on wheat
European Journal of Plant Pathology 122 (2), 265-276
Abstract: In a field experiment between 2004 and 2006, 14 winter wheat varieties were inoculated with either a mixture of three isolates of F. poae or a mixture of three isolates of F. avenaceum. In a subsequent climate chamber experiment, the wheat variety Apogee was inoculated with individual single conidium isolates derived from the original poly conidium isolates used in the field. Disease symptoms on wheat heads were visually assessed, and the yield as well as the fungal incidence on harvested grains (field only) was determined. Furthermore, grains were analysed using LC-MS/MS to determine the content of Fusarium mycotoxins. In samples from field and climate chamber experiments, 60 to 4,860 μg kg-1 nivalenol and 2,400 to 17,000 μg kg-1 moniliformin were detected in grains infected with F. poae and F. avenaceum, respectively. Overall, isolate mixtures and individual isolates of F. avenaceum proved to be more pathogenic than those of F. poae, leading to a higher disease level, yield reductions up to 25%, and greater toxin contamination. For F. poae, all variables except for yield were strongly influenced by variety (field) and by isolate (climate chamber). For F. avenaceum, variety had a strong effect on all variables, but isolate effects on visual disease were not reflected in toxin production. Correlations between visual symptoms, fungal incidence, and toxin accumulation in grains are discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Susanne Vogelgsang
Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
population dynamics/ epidemiology
Pest and/or beneficial records:
Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
---|---|---|---|---|
Fusarium poae | Wheat (Triticum) | |||
Fusarium avenaceum | Wheat (Triticum) |