Induction of antimicrobial 3-deoxyflavonoids in pome fruit trees controls fire blight |
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Authors: | Halbwirth Heidrun Fischer Thilo C Roemmelt Susanne Spinelli Francesco Schlangen Karin Peterek Silke Sabatini Emidio Messina Christian Speakman John-Bryan Andreotti Carlo Rademacher Wilhelm Bazzi Carlo Costa Guglielmo Treutter Dieter Forkmann Gert Stich Karl |
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Institution: | Institute of Technical BioScience, Technical University of Vienna, Getreidemarkt 9/173, A-1060 Wien, Austria. |
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Abstract: | Fire blight, a devastating bacterial disease in pome fruits, causes severe economic losses worldwide. Hitherto, an effective control could only be achieved by using antibiotics, but this implies potential risks for human health, livestock and environment. A new approach allows transient inhibition of a step in the flavonoid pathway, thereby inducing the formation of a novel antimicrobial 3-deoxyflavonoid controlling fire blight in apple and pear leaves. This compound is closely related to natural phytoalexins in sorghum. The approach does not only provide a safe method to control fire blight: Resistance against different pathogens is also induced in other crop plants. |
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