Schematic diagram of integron cassette in X. axonopodis pv. punicae LMG 859 (Xap), X. campestris pv. viticola LMG 965 (Xvt), X. citri pv. mangiferaeindicae LMG 941 (Xmi), X. citri subsp. citri Aw12879 (Xcaw12879), X. axonopodis pv. citri strain 306 (Xac), X. axonopodis Xac29-1 (Xac29), X. axonopodis pv. malvacearum strain GSPB2388 (Xml2388), and X. citri pv. malvacearum strains X20 (Xml-X20) and X18 (Xml-X18). ilvD, integrase, attI (recombination site), 59-bp elements (secondary recombination site), and gene cassette arrays are shown. Different gene cassettes are colored differently, while genes with similar colors are homologs. All maps are approximately to scale.