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Conference abstract2011

Plant Pathogenic Fungal Interactions in Oats

Kolseth, Anna-Karin; Persson, Paula

Abstract

Within the genus Fusarium more than fifteen species have been identified associated with cereal plant material, and in most cases more than one species are simultaneously present in a sample. Some of the species are aggressive plant pathogens causing Fusarium Head Blight, FHB, while other species are minor pathogens causing very little or no symptoms. Jointly for the cereal Fusarium species is that they produce mycotoxins harmful for both humans and animals. This makes them both a quantitative and qualitative problem. To study inter Fusarium species biology and to test the hypothesis that the minor cereal pathogen Fusarium langsethiae is dependent on other Fusarium spp. for a successful infection of its host a growth chamber experiment was carried out. Two different levels of humidity but same temperature were used in order to study development and interactions between Fusarium culmorum, Fusarium graminearum and Fusarium langsethiae in oat. The different Fusarium species was used singly or in different pair-mixtures and the fungi were inoculated on sterile cereal kernels. The fungal inoculum was placed at sowing depth in the pots and sampling of plants was performed five times with regular intervals until the plants started its yellowing phase. Preliminary analysis of plants at yellowing phase reveals no detectable endophytic infection of F. langsethiae suggesting it has an epiphytic life style. Its pattern of infection also confirms it being a minor pathogen, since it did not cause early plant death, which, in comparison, both F. graminearum and F. culmorum did. Fusarium graminearum and F. culmorum showed preference for different dispersal strategies with the former being easily wind dispersed and the latter more stationary and soil borne. Analysis is ongoing and further results will be presented and discussed

Published in

NJF Report
2011, Volume: 7, number: 3, pages: 194-194
Title: Food, feed, fuel and fun : Nordic light on the future land use and rural development : Nordic Association of Agricultural Scientists, Uppsala, Sweden, June 14-16, 2011 : book of abstracts of the 24th NJF Congress and of the 2nd Nordic Feed Science Conference : Swedish University of Agricultural Sciences, Uppsala, Sweden, June 15-16 2011
Publisher: Nordic Association of Agricultural Scientists

Conference

24th NJF Congress Food, Feed, Fuel and Fun Nordic Light on Future Land Use and Rural Development