FIGURE 3.

Xanthomonas hortorum pathovars on various hosts. (a) English ivy leaf infected by X. hortorum pv. hederae. Courtesy of Forestry Images and the Penn State Department of Plant Pathology & Environmental Microbiology Archives. (b) X. hortorum pv. carotae symptoms on a carrot leaf. Photograph courtesy of E‐phytia and Benoît Mériaux. (c) X. hortorum pv. gardneri symptoms on pepper (cv. Early Carl Wonder) leaves, 14 days postinoculation (dpi) with X. hortorum pv. gardneri Xg965. Photograph provided by Neha Potnis. (d) Field infection of tomato plant by X. hortorum pv. gardneri. Photograph provided by Eduardo Bernal. (e) Diseased dandelion leaf 12 dpi after inoculation with X. hortorum pv. taraxaci LM 16389 (= CFBP 8644). Photograph provided by Lucas Morinière. (f) X. hortorum pv. pelargonii on geranium (Pelargonium spp.). Photograph courtesy of Forestry Images and Nancy Gregory (University of Delaware). (g) Close‐up of field infection of a lettuce leaf by X. hortorum pv. vitians. Photograph provided by Lucas Morinière. (h) Infection of artichoke head by X. hortorum pv. cynarae. Photograph courtesy of Johan Van Vaerenbergh