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Bacteria

Bacteria. Bacterial spots and Blights. The most common types of bacterial symptom on plants are those that appear as spots of various sizes on leaves, stems and fruits.

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Bacteria

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  1. Bacteria

  2. Bacterial spots and Blights • The most common types of bacterial symptom on plants are those that appear as spots of various sizes on leaves, stems and fruits. • Bacterial spots appear as necrotic, usually circular or roughly circular and in some cases they are surrounded by a yellowish halo. • In dicotyledonous plants the development of some bacterial spots is restricted by intermediate or large veins and the spots appear typically angulareg.Angularleafspotofcotton • Bacterial spots on leaves and stems of monocotyledonous plants appear as streaks or strips.LEAFSTREAKOFPADDY • In leaf blight disease, the spots enlarge in size, rapidly necrotic, and through coalescence of several small spots, may produce large dead areas of various shapes. • Eg: Bacterial leaf spot of Tomato caused by Xanthomonas campestris pv. vesicatoria • Bacterial leaf blight of rice caused by Xanthomonas campestris pv. oryzae

  3. Bacterial leaf Streak • Long, narrow necrotic lesions on leaves or stems • Translucent streaks are formed on the veins • Band like exudates

  4. 2.Angular leaf spot

  5. Bacterial ooze Exudates, consisting of bacterial cells, on the surface of plant parts infected with bacteria

  6. Bacterial ooze Exudates, consisting of bacterial cells, on the surface of plant parts infected with bacteria

  7. BACTERIAL BLIGHT

  8. Bacterial Blights

  9. BACTERIAL LEAF STREAK

  10. 5.Boll rot.

  11. VEINAL BLIGHT STEM INFECTION Oil soaked lesions

  12. Soft rot in Carrot

  13. Soft rot in Potato

  14. Scab

  15. Galls

  16. Bacterial Wilts

  17. Canker

  18. CANKER

  19. Fire Blight of Apple

  20. Fire Blight of Apple

  21. Thank you!

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