The three-year study took place in
The two soybean varieties studied responded immediately to the fungus in their gene expression activity. Then, after a lull for about two days, activity increased again as the plants launched a second attack. That second wave appears to have been a real resistance response, the scientists say, and it has helped them narrow their list of "genes of interest" to only a few hundred.
A new resistant variety is still years down the road. "It's not something that can be solved overnight, but it will work out," says ISU plant pathologist Thomas Baum. "You have to put in the time, resources and manpower to get a grip on the biology. And then you can start doing other approaches to control the disease. But first we need to understand what we're trying to control."