Remarkably High Internal Transcribed Spacer Haplotype Diversity of the Fungal Select Agent Discovered Throughout Its Range in Sub-Saharan Africa.

Red leaf blotch of soybean, caused by the fungus , is a foliar disease characterized by blotching, necrosis, and defoliation that has only been reported from Africa. The species is listed as a Select Agent by the Federal Select Agent Program due to its potentially devastating impacts to soybean production should it spread to the United States. Despite its potential import, very few isolates are available for study.