Plant growth-promoting rhizobacteria (PGPR) offer a sustainable and eco-friendly approach to combatting plant diseases. These beneficial bacteria colonize plant roots and employ diverse strategies to shield plants from harmful pathogens. They directly compete with pathogens for resources, produce antimicrobial compounds like antibiotics, and even deprive them of essential nutrients like iron. Additionally, PGPR trigger the plant's own defense mechanisms, priming it for rapid response against future attacks. This induced systemic resistance (ISR) enhances plant resilience and reduces disease severity. Research suggests PGPR can effectively control a wide range of plant diseases caused by bacteria, fungi, and even viruses. As concerns about chemical pesticide overuse rise, PGPR hold immense potential for sustainable agriculture, promoting healthy crops and safeguarding global food security.

1. By
V.Sathiya Aravindan

2. Introduction
Solanaceous vegetables
Production and yield losses
Nutritional values

3. Causal Factors and Infectivity in
Damping Off
Causal Factors and
Infectivity in Damping Off
1 Causal Factors
The infectivity of zoospores is a key factor in the
lifecycle of damping off, leading to widespread
damage in plantations.
2 Infectivity of Zoospores
Zoospores play a significant role in the infectivity
and spread of damping off, impacting the health
of solanaceous vegetables.
3 Lifecycle Overview
Understanding the lifecycle of zoospores is
crucial for developing effective strategies to
combat damping off in solanaceous vegetables.

4. PGPR Over Synthetic Chemicals for Damping Off Cont
PGPR Bacillus offers a
sustainable alternative
to synthetic chemicals,
specifically tailored for
damping off control in
solanaceous
vegetables.
Fluorescent
pseudomonads represent
a natural and
environmentally
conscious solution in
combatting damping off,
ensuring the health of
solanaceous vegetables.

6. Source:AI World
Application Methods of PGPR
for Damping Off Control
Soil Drenching
Direct application of PGPR solutions to the soil effectively aids in
damping off control, creating a healthier environment for
solanaceous vegetables.
Foliar Spray
Foliar application of PGPR fosters systemic defense responses,
bolstering solanaceous vegetable immunity against damping off.
Seed Treatment
Coating seeds with PGPR solutions offers preventive measures,
shielding solanaceous vegetables from potential damping off
infections from the early stages.

7. Benefits of PGPR for Damping Off Control
Enhanced
Plant
Health
Eco-
Friendly
Solution
IMPROVED
QUALITY OF
PRODUCE

8. Symptoms of Damping off
Pre emergence Post emergence

9. Isolation of
pathogen

10. Isolation of PGPR
Native isolates
Bacillus sp.
Pure culture
Bacillus sp.
Native isolates
Fluorescent pseudomonas
Pure culture
Fluorescent pseudomonas

11. Thank You