Seed World

Combating Wheat Blast

An innovative course May 18-22 at Kansas State University’s Biosecurity Research Institute (BRI) is offering an overview of the theory and practice of plant biosecurity for participants from 14 countries. Wheat blast, an emerging disease that threatens worldwide food security, is the focus.
Course organizer Jim Stack, Kansas State University professor of plant pathology, said the wheat blast fungus, Magnaporthe oryzae, has populations that attack rice, ryegrass and wheat, but the wheat species is particularly worrisome. It emerged in Brazil in 1985, then spread to Bolivia and Paraguay, primarily through movement of infected seed. A 2009 epidemic lowered Brazil’s yields by 30 percent, and infected local yields can be reduced by 90 percent.
“The concern is if it spreads beyond South America, it could go global. Wheat grows on more acres than any other crop, and wheat is being used to meet food security needs of many people,” Stack said.
The course is designed to help participants learn how to contain and exclude a plant pathogen. The timing is crucial. “The world is being overrun right now,” Stack said. “Most are unaware, but there could be significant ramifications in how we address poverty and how we achieve food security.”
More information is available here: