Fumonisin B1 and beauvericin accumulation in wheat kernels after seed-borne infection with Fusarium proliferatum

Abstract

Fusarium proliferatum is a fungal pathogen causing ear rot of maize. The fungus infects a range of other plants but the economic impact of these diseases has not been established. Recently, F. proliferatum and its mycotox-in fumonisin were found in wheat grains. Here we report that seed-borne infection of wheat with F. prolifera-tum resulted in systemic colonization of wheat plants and contamination of wheat grains with fumonisins and beauvericin. F. proliferatum strains originating from different hosts were able to infect wheat via seeds. Colonization of wheat plants with the fungus was highest in the stems, followed by leaves; one third of the strains reached kernels, causing accumulation of fumonisins and beauvericin to 15–55 μg kg-1. The results show that seed-borne infection of wheat with F. proliferatum can lead to contamination of wheat kernels with mycotoxins fumonisins and beauvericin.