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sohnlab studies microbial pathogenesis and plant innate immunity. In particular, we are interested in better understanding the mechanisms by which intracellular R proteins recognize pathogen-derived molecules and activate immune responses in plants. Our research topics include but are not limited to • Mechanisms by which plant R proteins recognize pathogen effectors and activate immunity • Effector functions during bacterial and fungal pathogenesis • Genetic engineering of durable plant immunity to accelerate molecular crop breeding