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Analysis of the Fusariumgraminearum species complex from wheat, barley and maize in South Africa provides evidence of species-specific differences in host preference
Species identity and trichothecene toxin potential of 560 members of the Fusarium graminearum species complex (FGSC) collected from diseased wheat, barley and maize in South Africa was determined using a microsphere-based multilocus genotyping assay. Although three trichothecene types (3-ADON, 15-AD...
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Published in: | Fungal genetics and biology 2011-09, Vol.48 (9), p.914-920 |
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creator | Boutigny, Anne-Laure Ward, Todd J Van Coller, Gert J Flett, Bradley Lamprecht, Sandra C O'Donnell, Kerry Viljoen, Altus |
description | Species identity and trichothecene toxin potential of 560 members of the Fusarium graminearum species complex (FGSC) collected from diseased wheat, barley and maize in South Africa was determined using a microsphere-based multilocus genotyping assay. Although three trichothecene types (3-ADON, 15-ADON and NIV) were represented among these isolates, strains with the 15-ADON type predominated on all three hosts. A significant difference, however, was identified in the composition of FGSC pathogens associated with Gibberella ear rot (GER) of maize as compared to Fusarium head blight (FHB) of wheat or barley (P |
doi_str_mv | 10.1016/j.fgb.2011.05.005 |
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Although three trichothecene types (3-ADON, 15-ADON and NIV) were represented among these isolates, strains with the 15-ADON type predominated on all three hosts. A significant difference, however, was identified in the composition of FGSC pathogens associated with Gibberella ear rot (GER) of maize as compared to Fusarium head blight (FHB) of wheat or barley (P<0.001). F. graminearum accounted for more than 85% of the FGSC isolates associated with FHB of wheat and barley (N=425), and was also the dominant species among isolates from maize roots (N=35). However, with the exception of a single isolate identified as an interspecific hybrid between Fusariumboothii and F. graminearum, GER of maize (N = 100) was exclusively associated with F. boothii. The predominance of F. graminearum among FHB isolates, and the near exclusivity of F. boothiii among GER isolates, was observed across all cultivars, collection dates, and provinces sampled. 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subjects | Fusarium Hordeum vulgare Triticum aestivum Zea mays |
title | Analysis of the Fusariumgraminearum species complex from wheat, barley and maize in South Africa provides evidence of species-specific differences in host preference |
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