Butternut tree with stem canker (IMAGE)

Purdue University

Butternut tree with stem canker

Caption

Douglass Jacobs, the Fred M. van Eck Professor of Forest Biology at Purdue University, with a butternut tree that has been infected with stem canker. Butternut is on the list of at-risk forest tree species that will likely need biotechnology along with traditional tree-breeding approaches to avoid extinction.

Credit

Purdue Agricultural Communications photo/Tom Campbell

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This image may be used by news organizations referencing the New Forests journal article on biotechnology and at-risk forest tree species.

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