Bacillus Biocontrol Compositions for Citrus Greening Suppression
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Solution Overview
Problem
Existing chemical treatments for plant pathogens have adverse environmental and health impacts, necessitating the development of safe and effective biological control agents to prevent and reduce plant diseases.
Innovation Solution
Compositions comprising isolated Bacillus bacteria, including Bacillus megaterium, Paenibacillus polymyxa, Bacillus vallismortis, Bacillus subtilis spizizenii, and Bacillus amyloliquefacians, are applied to plants, seeds, or surrounding media to protect against a variety of plant pathogens and enhance plant growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical compounds are applied to control plant pathogens, then disease control effectiveness is improved, but adverse environmental and health impacts worsen
Solution Approach 1:
The patent replaces chemical control mechanisms with biological control mechanisms by using beneficial microorganisms (bacteria, fungi, actinomycetes) and their metabolites to suppress plant pathogens. This substitution eliminates the harmful environmental and health impacts of chemical compounds while maintaining disease control effectiveness through natural biological processes such as competition for resources, production of antimicrobial substances, and induction of plant systemic resistance.
Solution Approach 2:
The patent introduces beneficial microorganisms as intermediary agents that mediate the control of plant pathogens. These microorganisms act as biological mediators that suppress pathogen activity through various mechanisms including antibiotic production, competition for nutrients and space, and induction of plant defense responses, thereby achieving pathogen control without direct application of harmful chemical substances.
2Object-affected harmful factors
If biological control agents are used to avoid adverse effects, then environmental safety is improved, but disease control effectiveness may worsen
Solution Approach 1:
The patent employs composite biological control formulations that combine multiple beneficial microorganisms (bacteria, fungi, actinomycetes) and their metabolites to achieve synergistic disease control effects. This composite approach enhances the reliability and effectiveness of biological control by utilizing diverse mechanisms of action simultaneously, ensuring robust pathogen suppression while maintaining environmental safety.
Solution Approach 2:
The patent optimizes various parameters of biological control agents including strain selection, formulation composition, application timing, and environmental conditions to maximize disease control effectiveness. By adjusting these parameters, the patent ensures that biological control agents achieve reliability comparable to or exceeding chemical controls while maintaining their environmental safety advantages.
3Reliability
If multiple biological control mechanisms are employed, then disease suppression is improved, but system complexity worsens
Solution Approach 1:
The patent utilizes biological control agents that exhibit multiple functions simultaneously, such as microorganisms that can compete for resources, produce antimicrobial substances, and induce plant systemic resistance. This multi-functionality allows a single biological control agent to achieve disease suppression through multiple mechanisms, reducing the need for complex multi-component systems while maintaining high effectiveness.
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
These biocontrol agents effectively reduce plant disease severity and enhance growth by suppressing pathogen activity and inducing systemic resistance, providing a safer alternative to chemical controls.
Implementation Method 1
biological disease control is attributed to direct antagonism against the pathogen such as by production of antibiotics or hydrolytic enzymes
Implementation Method 2
biological disease control is attributed to direct antagonism against the pathogen such as by production of antibiotics or hydrolytic enzymes
Implementation Method 3
biological disease control is attributed to direct antagonism against the pathogen such as by production of antibiotics or hydrolytic enzymes or through competition for nutrients
Implementation Method 4
other mechanisms such as the induction of systemic resistance responses within the plant have also been attributed to biocontrol agents
Data Source
AI summary
A biocontrol agent of the present invention, comprising one or more of the selected, isolated bacteria, is useful in methods of protecting plants against citrus greening disease by the plant pathogen Candidatus liberobacter. A method comprises applying a biocontrol agent to plants, plant seeds, or media or soil surrounding plants to treat the infection of or reduce the effects of Candidatus liberobacter causing the citrus greening disease on a plant grown in the media or plant soil.