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Spray-on bacteria stop potato rot fungus.

Publication: Agricultural Research
Publication Date: 01-JUN-02 		Format: Online - approximately 1081 words
Delivery: Immediate Online Access
Full Article Title: Spray-on bacteria stop potato rot fungus.(Brief Article)

Article Excerpt
Sometimes a little bit of antagonism can be a good thing. A recent Webster's dictionary edition defines it as "active opposition, hostility; counteraction."

At ARS' National Center for Agricultural Utilization Research (NCAUR) in Peoria, Illinois, Patricia J. Slininger, David A. Schisler, and associates are banking on a little antagonism to go a long way in protecting stored potatoes from dry rot. It's an unsightly postharvest disease that costs U.S. producers $100 million to $250 million annually in losses.

Slininger, a chemical engineer, and Schisler, a plant pathologist, are close to developing a biological approach to controlling dry rot by using bacteria that are natural antagonists of the main fungus that causes this tuber disease--Fusarium sambucinum. The bacteria, which are harmless to humans, colonize potato wound sites and form a kind of living bandage that keeps the fungus at bay.

Setting the Stage

"An antagonist is a microorganism that harms a plant pathogen so that its ability to infect the plant is...

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