about Erwinia rot disease and solution for the disease in banana.

1. ERWINA ROT IN
BANANA.
By
-Aditya Bhosale
-Parag More

2. ERWINIA ROT
• Also known as SOFT ROT OF RHIZOME
• Rhizome rot disease is caused by Erwinia spp. a bacterial
genus known for its ability to cause soft rots on a wide range
of host plants and tissues.

3. BACTERIAL SPECIES
•E.caratovora
•E.amylovora
•E.chrysanthemi

4. Mechanism of disease:
Soft rot:
• E. caratovora produces pectinase, an extracellular enzyme
which breaks down pectin.
• Pectin is a polysaccharide that cements plant cells together.
• The pectinase produced by E.caratovora affects the storage
tissues of plants which causes harm to plant.

5. SYMPTONS
• Yellowing and the whitening of the leaves(discoloration ).
• Emitting of foul odor.
• Softening of roots and turning blackish
Diseased
plant.
Healthy
Plant.

6. Black soft roots of
banana plant.

7. PREVENTIVE MEASURES
• Avoid wet conditions.
• Rotate crops with rot-resistant vegetables (corn, snap beans
and beets).
• Use caution during garden maintenance.
• Keep the garden and tools clean.

8. CONTROL MEASURES
• Bourdex Mixture.
• Antibiotics – e.g.-Streptomycin.
• Using specific bacteriophage.

9. Use of bacteriophages
• Bacteriopahges are the viruses which uses the bacteria a host.
• Bacteriophages are target specific.
• The particular disease causing microbe can be destroyed with
their action.
• Bordeaux and antibiotics are used as bacteriostatic agents but
they have adverse effects with useful organisms.

10. • It do not effects on the cells of the plants.
• Its also known as Phage therapy.
• Pantoea agglomerans also called as Erwinia herbicola.
• Non-pathogenic mutant derivatives of the phytopathogen can
be used for phage production.
• Phages for control of Listeria monocytogenes have FDA
approval for use on food and have been granted GRAS
(generally recognised as safe) status.

11. THANK YOU…!