Abstract
Huanglongbing is a major threat to the citriculture worldwide. The fast and efficient dissemination of Candidatus Liberibacter spp. by the psyllid Diaphorina citri, the absence of genetic resistance in Citrus spp., are main factor driving the severity of the disease. In Brazil, we have associated with HLB Ca. L. asiaticus (Las) and Ca. L. americanus (Lam). The development of citrus cultiv…