Over the last decade, the lush olive groves one associates with the Italian countryside have become desiccated, as if stuck in a perpetual winter. The culprit is Xylella fastidiosa, a species of aggressive bacteria that have caused devastating epidemics in several important crops. X. fastidiosa now threatens almonds, olives, and grapevines—staples of Europe’s economy and cuisine.
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Source: Phys.org