This study has produced an updated, chromosome-level assembly for Fraxinus pennsylvanica and a corresponding gene annotation.. Fraxinus pennsylvanica genome assembly v1.4

Once the most widely distributed ash tree in North America, green ash (Fraxinus pennsylvanica) has experienced high mortality from the non-native invasive emerald ash borer (EAB; Agrilus planipennis). A small percentage of native green ash trees that remain healthy in long-infested areas, termed “lingering ash,” display partial resistance to the insect, indicating that breeding and propagating populations with higher resistance to EAB may be possible. To assist in ash breeding, ecology and evolution studies, we report the first chromosome-level assembly from the Fraxinus genus for F. pennsylvanica with over 99% of bases anchored to 23 haploid chromosomes, spanning 757Mb in total, composed of 49.43% repetitive DNAs, and containing 35,470 high confidence gene models assigned to 22,976 Asterid orthogroups.