Fusarium avenaceum is one of the most widespread root-associated fungi. It was identified in the roots of wheat, rye, barley, oat as well as in the roots of 13 wild growing plant species occurring nearby. The distribution frequency of this pathogen exceeded 9.7%. The interaction in vitro between F. avenaceum and nine most widespread root-associated fungi was diverse and strongly determined by the species and isolate of fungus. Fungistatic trophic and mutual antagonisms prevailed among the four forms of interactions of the micromycetes tested. Aspergillus ochraceus, Chaetomium globosum and Rhizoctonia spp. most strongly inhibited the growth of F. avenaceum.

Keywords: cereal, wild growing plants, Fusarium avenaceum, root-associated fungi, interaction, distribution