How Doratomyces stemonitis copes with Benzoxazolin-2(3H)-one (BOA), its derivatives and detoxification products |
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Authors: | Nataliya Voloshchuk Mona Knop Thomas Colby Erich Kombrink Lothar Hennig Diana Hofmann Dieter Sicker Andrej Gryganski Margot Schulz |
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Affiliation: | 1.Department of Phytopathology,National University of Agriculture,Kiew,Ukraine;2.Institut für Molekulare Physiologie und Biotechnologie der Pflanzen,Universit?t Bonn,Bonn,Germany;3.Max-Planck-Institut für Züchtungsforschung,K?ln,Germany;4.Institut für Organische Chemie,Universit?t Leipzig,Leipzig,Germany;5.Institut für Analytische Chemie,Universit?t Leipzig,Leipzig,Germany |
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Abstract: | Summary. Doratomyces stemonitis (Hyphomycetales, Dematiaceae) is a saprotrophic fungus belonging to the mycobiota of the cereal rhizosphere. The fungus is able to metabolize benzoxazolin-2-(3H)-one and a variety of its derivatives including higher plant detoxification products, microbial degradation products and the chemically rather stable 2-amino-(3H)-phenoxazin-3-one. D. stemonitis can use all of these compounds as sole C-sources but their utilization, especially that of microbial degradation products and 2-amino-(3H)-phenoxazin-3-one, seems to be highly energy consuming, resulting in slow mycelium growth and a change of colony morphology. Benzoxazolin-2-(3H)-one derived compounds induce the synthesis of different isoforms of a glycosylated protein with sequence homologies to the endo-1,3-β-glucanase Asp f2, an allergen from Aspergillus fumigatus and other Asp f2-like proteins e.g., from Verticillium dahliae or PRA1 antigen from Candida albicans. The induction of the protein is regarded as a stress response. |
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Keywords: | allelopathy Doratomyces stemonitis benzoxazolin-2(3H)-one glucoside carbamate 2-amino-3H-phenoxazin-3-one metabolization allergen Asp f 2 similar protein endo-1-3-β -glucanase |
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