eLife Assessment
Insects can act as vectors of plant diseases, hence the study of insect-pathogen interactions is relevant for agriculture. This important study identifies in Diaphorina citri a dopamine receptor responsive to 'Candidatus Liberibacter asiaticus' infection, demonstrate direct regulation of this receptor by a microRNA, and integrate dopamine signaling into an established insect reproductive hormone framework. Multiple complementary experimental approaches convincingly support for the findings, although key conclusions rely on correlative data and the mechanistic evidence for the proposed linear signaling cascade is limited. This work will be of interest for insect physiology and vector-pathogen biology, and more broadly for citrus agriculture.