Erwinia psidii Rodrigues Neto et al. is a plant-pathogenic bacterium that causes serious damage to eucalyptus, guava and papaya crops in tropical and subtropical conditions (Chai et al., 2017;Coutinho et al., 2011;Rodrigues Neto et al., 1983). In South America, the bacterial pathogen was reported causing dieback on eucalyptus species in Argentina, Uruguay (Coutinho et al., 2011) and Brazil (Arriel et al., 2014). In Brazil, the incidence of eucalyptus bacterial blight on susceptible genotypes can reach 30% of trees in a production field (Borges-Junior et al., 2020). Besides dieback, the pathogen can cause leaf hydrosis (i.e. water-soaking) close to midrib, stem canker and