Project description:‘Candidatus Liberibacter asiaticus’ (CLas), the bacterial pathogen associated with citrus greening disease, is transmitted by Diaphorina citri, the Asian citrus psyllid (ACP). We used quantitative mass spectrometry to compare the proteomes of CLas(+) and CLas(-) populations of D. citri. This experiment used adult mixed sex whole insect samples as starting material for protein extraction. DNA extracted from CLas(+) ACP was tested by qPCR to confirm presence of CLas.