Xanthomonas campestris pv. vesicatoria
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Author: Paul Bachi, University of Kentucky Research and Education Center - IPM Images
Xanthomonas campestris pv. vesicatoria (Doidge 1920) Dye 1978
This pathovar is a Gram-negative phytopathogenic γ-proteobacterium with a world-wide distribution which causes bacterial spot on solanaceous crops like pepper and tomato. Infections result in reduced yield and unmarketable fruits. Crop losses of over 50% have been reported for susceptible cultivars. The bacteria spread through rain splashes and enter the plant through small wounds or contaminated tools. On tomatoes small circular spots (a few mm large) develop on the leaves and green fruits. This is often followed by necrosis and defoliation. The disease is promoted by warm and rainy weather. Between seasons the bacteria persist on crop debris or volunteer crops.
For management, a combination of crop rotation, use of disease-free seeds, resistant cultivars and copper-containing fungicides are recommended. However, copper-resistant strains have developed.
| Vernacular names | |
|---|---|
| • Deutsch: | Bakterielle Fleckenkrankheit der Tomate |
| • English: | bacterial spot of tomato bacterial spot of pepper |
| • Español: | mancha bacteriana del tomate |
| • Français: | tache bactérienne de la tomate |
See also the closely related species Xanthomonas euvesicatoria and Xanthomonas vesicatoria, which was previously called "Xanthomonas axonopodis pv. vesicatoria type B". Bacterial spot of tomato is also caused by Xanthomonas perforans and Xanthomonas gardneri.
Synonyms:
Xanthomonas axonopodis pv. vesicatoria
- Other images of Xanthomonas campestris pv. vesicatoria (IPM Images - click to enlarge)
symptoms on tomato leaf
symptoms on tomato plants
symptoms on tomato
symptoms on tomato
symptoms on tomato
symptoms on tomato
symptoms on tomato leaf
symptoms on Capsicum frutescens
