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Wheat gene controls risk from two pathogens

A single wheat gene confers susceptibility to two necrotrophic fungal pathogens, tan spot ( Pyrenophora tritici-repentis) and leaf blotch ( Stagonospora nodorum), according to a study from the USDA’s Agricultural Research Service. They found that the gene, Tsn1, is sensitive to a host-selective effector toxin, ToxA, produced by both pathogens. Expression of the gene is also regulated by the circadian clock and light, evidence that the host-pathogen interactions are associated with photosynthesis pathways.



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