bacteria. bacterial spots and blights the most common types of bacterial symptom on plants are those...
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Bacteria
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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
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Bacterial leaf Streak•Long, narrow necrotic lesions on leaves or stems
•Translucent streaks are formed on the veins
•Band like exudates
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2.Angular leaf spot
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Bacterial ooze
Exudates, consisting of bacterial cells, on the surface of plant parts infected with bacteria
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Bacterial ooze
Exudates, consisting of bacterial cells, on the surface of plant parts infected with bacteria
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BACTERIAL BLIGHT
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Bacterial Blights
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BACTERIAL LEAF STREAK
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5.Boll rot.
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Oil soaked lesions
STEM INFECTIONVEINAL BLIGHT
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Soft rot in Carrot
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Soft rot in Potato
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Scab
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Galls
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Bacterial Wilts
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Canker
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CANKER
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Fire Blight of Apple
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Fire Blight of Apple
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Thank you!