Symptoms on tomato  

• Organs attacked :

• Symptoms :
  • Small fatty and translucent lesions appearing randomly on the leaflets or at the edge of the blade, evolving into circular or slightly angular brown to black spots, 2-3 mm in diameter, and sometimes surrounded by a yellow halo (figures 1 and 2). Their center dries out, and the degraded tissues can end up falling off.
  • These spots can extend and merge, altering large sectors of the leaf blade which eventually necrotic and dry out. Strongly affected leaves turn yellow, dry out.
  • Comparable but often more extensive lesions on petioles, stem, peduncles (figure 3) and sepals.
  • Falling flowers.
  • Greasy, dark green to black lesions on green fruits giving rise to corky, raised, cracked pustules up to 1 cm in diameter. A fatty halo sometimes surrounds them (figure 4).
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• Signs : no visible signs on the altered tissues.
• Possible confusion : damage caused by hailstone impacts.

• Production areas affected :

•  Xanthomonas sp. reported on tomato : X. vesicatoria , X. gardneri , X. perforans , X. euvesicatoria , X. campestris pv. raphani