some types of bacterial diseases are given in this file . students could get more information from my slides in next Lecture

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2. Management strategies of plant
pathogenic prokaryotes
Presented By:
M. ZeeShan
College of Agriculture
BZU, Bahadur Sub Campus Layyah
2Depart, of Plant Pathlogy

3. Introduction
 Most plant pathogens bacteria are rod shaped
the only exception being streptomycin which is
filamentous
 Rod shaped phytopathogenic bacteria reproduce
by the a-sexual process known as binary fission
or fusion
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4. Plant diseases caused by prokaryotes
Prokaryotes
 Agrobactarium
 Clavibacter
 Erwinia
 Pseudomonas
 Xanthomonas
 Streptomyces
Diseases
 Crown gall, hairy roots
 Fruit spot, tomato wilt
 Blight ,wilt
 Leaf spot ,blight
 Bulb rot ,citrus canker
 Potato scab ,soil rot of
sweet potatoes
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5. Agrobecterium
Crown gall Hairy roots
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6. Clavibacter
Tomato wilt Fruit spot
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7. Erwinia
Blight Wilt
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8. Pseudomonas
Leaf spot Blight
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9. Xanthomonas
Bulb rot Citrus canker
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10. Streptomyces
Potato scab Soil rot of sweet potato
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11. Management
 Sanitation practices
 Crop rotation
 Resistant crop verities
 Antibiotics
1. Macrolides
2. Tetracyclines
3. Aminoglycosides
 Chemicals (Ethylene oxide,Ethylene, Chloride )
 Biological control ( Pythium, Fusarium, and
Rhizoctonia species)
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12. Bacterial blight of beans
 Causal organism:
 Xanthomonas
axonopodis pv.
Phesoli
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13. Management
 Disease free seed
 Crop rotation(for 2 year Cotton,Rice etc)
 Spray with copper fungicides
( Copper oxychloride, Cuperous oxide)
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14. Angular leaf spot of cucumber
 Causal organism:
 Pseudomonas
syringae pv.
lachrymans
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15. Management
 Copper containing bactericide (chlorothalonil,
copper oxychloride)
 Crop rotation (Tomatoes and Potatoes, and
Chillies)
 Resistant cultivars
1. SWEET SUCCESS
2. SALAD BUSH
3. BURPLESS #26 HYBRID
4. DIVA
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16. Bacterial fruit blotch of water
melon
 Causal organism:
 Acidovorax avenae
citrulli
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17. Management
 Crop rotation
 Don’t work on field while wet
 Avoid using over irrigation
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18. Citrus canker
 Causal organism:
 Xanthomonas
oxinopodis pv citri
 Xanthomonas
compestris pv. citri
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19. Management
 Eradication
 Burning all infected trees to avoid the spread of
pathogen
 Pruning of diseased shoots
 Use of clean transplants
 Remove weeds and incorporate crop residues
that can host the disease
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