A beetle and its longtime fungal associate go rogue

The beetle/fungus complex behind Thousand Cankers Disease was once the equivalent of a hang nail for black walnut, but changes in the fungus, Geosmithia morbida, and walnut twig beetle behavior have made it lethal. New research examines the genetic diversity of Geosmithia morbida and how that diversity is distributed on the landscape. —> Read More Here


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