Fraxinus pennsylvanica Genome sequencing. Fraxinus pennsylvanica

Once a widely-distributed forest tree in eastern North America, the green ash (Fraxinus pennsylvanica) has suffered high mortality due to the non-native invasive emerald ash borer (EAB; Agrilus planipennis). A small percentage of green ash trees remain healthy in long-infested areas and display partial resistance to the insect. These "lingering ash" may be able to breed and propagate populations with higher EAB resistance. To assist in ash breeding, ecology and evolution studies, we report the first chromosome-level assembly and an accompanying protein-coding gene annotation.