Comparing metabolomic profiles of Asian and North American ash species (genus Fraxinus ) to investigate the basis for resistance to emerald ash borer

At present, North American ash (Fraxinus spp.) are under attack by the emerald ash borer (Agrilus planipennis Fairmaire; EAB), an invasive species native to eastern Asia. Interestingly, Asian ash species are comparatively resistant to this phloem-feeding insect.