Identification of Isolates from Soybean with Resistance to Quinone Outside Inhibitor Fungicides.

Brown spot, caused by , is a common foliar disease of soybean (). Applications of fungicide products that contain quinone outside inhibitor (QoI) active ingredients to soybean fields have contributed to the selection and development of QoI-resistant populations of . We investigated the molecular mechanisms of QoI-resistance in these populations through targeted analysis of the cytochrome gene.

Exserohilum turcicum Race Population Distribution in the North Central United States.

Northern leaf blight (NLB) of corn, caused by Exserohilum turcicum, is a foliar disease common across corn production regions of the world, including those in the north central United States. Previous race population distribution studies identified five physiological races present in the United States, prior to 1995. For this study, 156 E.