Related Experiment Video
Updated: Jun 28, 2026

06:38
Use of the Soft-agar Overlay Technique to Screen for Bacterially Produced Inhibitory Compounds
Published on: January 14, 2017
Using Pseudomonas spp. for Integrated Biological Control.
Phytopathology
|October 24, 2008
Summary
Pseudomonas bacteria offer effective biological control for plant diseases. Commercial products like Bio-Save and BlightBan suppress fungal and bacterial issues in fruits and crops.
Area of Science:
- Agricultural Microbiology
- Plant Pathology
- Biocontrol Agents
Background:
- Pseudomonas species are extensively researched as biological control agents for plant diseases.
- Three commercial Pseudomonas formulations are registered with the U.S. Environmental Protection Agency for plant disease suppression.
Purpose of the Study:
- To review the applications and efficacy of commercial Pseudomonas-based biocontrol products.
- To highlight the benefits and potential adoption of these products in agriculture.
Main Methods:
- Review of existing commercial formulations: Bio-Save 10 LP, Bio-Save 11 LP, and BlightBan A506.
- Description of target pathogens, application methods, and crop types.
Main Results:
- Bio-Save products (Pseudomonas syringae strains ESC-10 and ESC-11) prevent postharvest fungal diseases in citrus, pome fruits, stone fruits, and potatoes.
- BlightBan A506 (Pseudomonas fluorescens strain A506) suppresses fire blight in apples and pears, with enhanced efficacy when combined with streptomycin.
- BlightBan A506 may also reduce fruit russet and frost injury.
Conclusions:
- Pseudomonas biocontrol products demonstrate moderate to excellent efficacy against various plant production challenges.
- Ease of application and integration with conventional methods support grower adoption.
- These biocontrol agents represent a valuable tool for sustainable agriculture and disease management.
More Related Videos
Related Concept Videos
Biological Methods for Microbial Control
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
Production of Biopesticides
Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...
Chemical Agents for Microbial Control
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
Gene Regulation in Microbial Communities: Quorum Sensing
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
Bioremediation
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

