Study finds pumpkin pathogen not evolving, which could make a difference for management

The pathogen that causes bacterial spot is very good at what it does. Forming small lesions on the rinds of pumpkins, melons, cucumbers, and other cucurbits, it mars the fruits’ appearance and ushers in secondary pathogens that lead to rot and severe yield loss. The bacterium, Xanthomonas cucurbitae, is so successful that it has had no reason to evolve through time or space. That’s according to new University of Illinois Urbana-Champaign research characterizing the pathogen’s genetic diversity across the Midwest. Read More

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