Abstract
Eucalyptus (Eucalyptus spp.), a member of the Myrtaceae family, is the most widely planted species for the production of wood, pulp, and related products. Austropuccinia psidii, the causal agent of myrtle rust, poses a constant threat to eucalyptus production and to the biodiversity of native forests, ranking among the ten most feared fungi in the world. While in Brazil, A. psidii populat…