Transgenic American chestnuts show enhanced blight resistance and transmit the trait to T1 progeny

- Two putative resistance-enhancing genes have been integrated into American chestnut.
- Transgenic American chestnut trees show significantly enhanced resistance to chestnut blight.
- Transgenes can be transmitted to a T1 generation that shows similarly enhanced blight resistance.
- Co-transformation is an effective method of separately introducing multiple genes into a tree host.