|Khan, Naseem - BRDC|
Submitted to: American Phytopathological Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: August 4, 2004
Publication Date: August 4, 2004
Citation: Khan, N.I., Tisserat, B. 2004. Induced resistance against fusarium head blight of wheat by autoclaved fungal biomass [abstract]. American Phytopathological Society Abstracts. p. 94:551. Technical Abstract: Fusarium head blight (FHB) is a devastating disease throughout the wheat growing regions of the world. We studied the influence of autoclaved fungal biomass (AFB) for inducing resistance against FHB. In greenhouse trials, AFB were sprayed on the plants before or at flowering. After 7-10 days, heads were sprayed with Fusarium graminearum conidia. Out of over 40 fungal isolates, significant reduction (~30 to 100%) in FHB disease severity was observed in plants sprayed with certain Penicillium sp., Trichoderma spp., and Aspergillus sp. isolates compared to untreated controls (P=0.05). The stage of wheat plant development, when sprayed with AFB, influenced reduction of FHB disease severity. Minimum dosages of AFB required to initiate induced resistance are under study. Spraying AFB may have potential to be included in the integrated pest management programs against FHB.