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News Release 12-074

History is Key Factor in Plant Disease Virulence

Where disease-causing microbes have been makes a difference

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Photo of forest-covered hills in California showing leafless trees felled by sudden oak death.

Countless trees in California have been felled by sudden oak death.

Credit: David Rizzo


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Aerial view of a forest with leafless trees fallen by sudden oak death.

Aerial view of forest of trees blighted with sudden oak death.

Credit: David Rizzo


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Photo of a tree affected by the sudden oak death.

An up-close view of a tree affected by the disease.

Credit: Doug Schmidt


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Photo of sap on a tree trunk from the sudden oak death.

A tree trunk "bleeding" from the disease.

Credit: Mario Garbeletto


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Photo of a bay leaf affected by plant disease.

A bay leaf affected by plant disease.

Credit: Doug Schmidt


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