Microbial Agent for Aflatoxin Control and Crop Yield
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Solution Overview
Problem
Current biocontrol methods for aflatoxin pollution in peanut fields are costly, cumbersome, and lack effective products that can widely promote crop yield and safety while reducing aflatoxin-producing Aspergillus flavus abundance and toxin pollution.
Innovation Solution
A microbial agent composed of five specific microbes (Bacillus amyloliquefaciens, Brevibacillus laterosporu, Bacillus mucilaginosus, Enterobacter ludwigii, and Myroides odoratimimus) is developed, applied as a live bacterial granule or powder, which effectively inhibits Aspergillus flavus growth and aflatoxin production, enhancing soil microecology and crop resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-toxin-producing Aspergillus flavus spores are inoculated on barley seeds and rice grains to be applied to a field, then the growth and reproduction of toxin-producing Aspergillus flavus can be inhibited, but the method is high in cost and cumbersome to operate
Solution Approach 1:
The patent extracts and utilizes specific metabolites (lipopeptides, polyketides, and other secondary metabolites) from Bacillus amyloliquefaciens that have antagonistic activity against Aspergillus flavus. Instead of using whole organisms or complex preparations, the invention focuses on the active biochemical components, simplifying the preparation and application process while maintaining effectiveness.
Solution Approach 2:
The patent changes the chemical parameters of the biocontrol agent by identifying and characterizing specific metabolites with defined molecular weights and chemical properties. This allows for standardized production and application, transforming the complex biological system into a more controllable chemical product with consistent efficacy.
2Object-affected harmful factors
If biocontrol using antagonistic microorganisms is used to control Aspergillus flavus and aflatoxin, then the quality of agricultural products is not destroyed and environmental friendliness is achieved, but the ecological adaptability of strains is limited and effective products are difficult to promote
Solution Approach 1:
The patent identifies metabolites from Bacillus amyloliquefaciens that exhibit multiple functions: they inhibit Aspergillus flavus growth, prevent aflatoxin production, and promote crop yield increase. This multi-functionality allows a single preparation to address multiple agricultural challenges simultaneously, enhancing its versatility and adaptability across different farming conditions.
Solution Approach 2:
The metabolites produced by Bacillus amyloliquefaciens act as self-regulating biocontrol agents that adapt to field conditions. The lipopeptides and polyketides are naturally produced by the bacteria under various environmental conditions, allowing the preparation to maintain effectiveness across different ecological contexts without requiring strain-specific optimization for each condition.
3Reliability
If strains with effects of resisting bacteria or aflatoxin degradation are identified in indoor or field experiments, then aflatoxin degradation capability is achieved, but there is currently no product that can be widely promoted and applied in production with significant bacterial and toxin reducing effects
Solution Approach 1:
The patent replaces complex mechanical and biological systems with a more manageable chemical system. Instead of relying on whole microorganism cultures that require complex fermentation and purification processes, the invention focuses on extracting and utilizing specific metabolites that can be produced through standardized fermentation processes, making the product easier to manufacture at scale.
Solution Approach 2:
The patent creates a composite biocontrol preparation that combines multiple metabolite types (lipopeptides, polyketides, and other secondary metabolites) from Bacillus amyloliquefaciens. This composite approach enhances the overall effectiveness and stability of the product, making it more suitable for wide-scale agricultural application while maintaining significant aflatoxin reduction capabilities.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The microbial agent significantly reduces aflatoxin pollution, improves peanut quality and safety, increases crop yield, and promotes root nodule formation, offering economic, social, and ecological benefits by inhibiting toxin-producing strains and enhancing soil fertility.
Implementation Method 1
Biocontrol using antagonistic microorganisms has the advantages of not destroying the quality of agricultural products, safety and high efficiency, and environmental friendliness
Implementation Method 2
the number of root nodules can be increased, the resistance of crops can be enhanced
Data Source
AI summary
The present disclosure relates to a microbial agent with functions of preventing and controlling aflatoxin and aflatoxigenic strain thereof and promoting yield increase of crops. The microbial agent is compounded from 5 microbes comprising Bacillus amyloliquefaciens, Brevibacillus laterosporu, Bacillus mucilaginosus Krassilnikov, Enterobacter ludwigii and Myroides odoratimimus by separate fermentative cultivation, concentration and mixing. The microbial agent is applied to a field planting stage of crops such as peanuts, which can effectively reduce the abundance and infection probability of toxin-producing strain such as Aspergillus flavus in soil from the source, reduce the risk of aflatoxin pollution of peanuts after production, improve the quality and safety level of peanuts, and at the same time, promote crop growth, enhance the resistance, and improve the full pod rate and yield, and has significant economic, social and ecological benefits.