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Summary: This study shows that both Camelina sativa as well as Capsella bursa-pastoris are capable of metabolizing destruxin B, the host-specific toxin produced by the fungal pathogen A. brassicae during infection. Considering that C. sativa and C. bursa-pastoris detoxify destruxin B and produce the phytoalexins camalexins, these wild crucifers appear to represent unique and perhaps useful sources of black spot resistance in strategic plant breeding.