Saprophytic Bacteria Biopreparation for Soil Pathogen Control
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Solution Overview
Problem
Current chemical plant protection products, such as pesticides, effectively control plant pathogens but disrupt the soil ecosystem and soil fertility, leading to the need for safer, ecological alternatives that can also promote plant growth and restore soil biological balance.
Innovation Solution
A composition and biopreparation comprising 8 strains of saprophytic soil bacteria (Arthrobacter sp., Bacillus sp., Citrobacter sp., Peanibacillus sp., Pseudomonas sp.) that are capable of bactericidal action, organic matter degradation, nitrogen fixation, and resistance to heavy metals, used for soil fertilization, pathogen control, and biostimulation of plant growth, produced through a method involving culturing these strains in a medium with glucose as the carbon source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical plant protection products (pesticides) are used to control plant pathogens, then pathogen control effectiveness is improved, but soil ecosystem balance and soil fertility deteriorate
Solution Approach 1:
The patent uses saprophytic bacteria that naturally decompose organic matter in soil to produce bacteriocins that control plant pathogens. This converts the natural decomposition process (which could be seen as competitive harm to other soil organisms) into a beneficial pathogen control mechanism, eliminating the need for chemical pesticides that disrupt soil ecology.
Solution Approach 2:
The patent introduces saprophytic bacteria as intermediary organisms that mediate between organic matter decomposition and pathogen control. These bacteria produce bacteriocins that selectively control pathogens without directly applying chemical pesticides to the soil, thus maintaining soil ecosystem balance while achieving pathogen control.
2Productivity
If chemical fertilizers are used to promote plant growth, then plant productivity is improved, but environmental pollution and soil degradation worsen
Solution Approach 1:
The patent employs saprophytic bacteria that naturally decompose organic matter and release nutrients in forms accessible to plants. This self-service mechanism eliminates the need for external chemical fertilizer applications, promoting plant growth through natural nutrient cycling while avoiding environmental pollution associated with synthetic fertilizers.
Solution Approach 2:
The patent changes the nutrient availability parameters in soil by introducing bacteria that transform organic matter into bioavailable nutrients. This biological transformation alters the chemical parameters of soil nutrients, making them more accessible to plants without introducing harmful chemical substances.
3Adaptability or versatility
If broad-spectrum pesticides are applied to control multiple pathogens, then pathogen control range is improved, but non-target soil microorganisms and beneficial bacteria are harmed
Solution Approach 1:
The patent uses different strains of saprophytic bacteria with specialized bacteriocin production profiles targeting specific pathogen groups. Each bacterial strain produces bacteriocins with specific spectrums of activity, creating localized quality differences in pathogen control that preserve beneficial soil microorganisms outside the target pathogen range.
Solution Approach 2:
The patent converts the natural competitive interactions between soil bacteria into a beneficial control mechanism. Saprophytic bacteria naturally produce bacteriocins to suppress competing organisms, but in this application, they selectively suppress only pathogenic bacteria while leaving beneficial soil microorganisms unaffected, turning a potentially harmful competitive process into a beneficial selective control system.
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 biopreparation effectively controls plant pathogens like Pseudomonas syringae and Pectobacterium carotovorum, restores soil biological balance, and promotes plant growth by secreting bacteriocins and degrading organic matter, while being environmentally friendly and reducing the need for chemical fertilizers and pesticides.
Implementation Method 1
The produced enzymes hydrolyze pectin, which is one of the basic polymers that build the cell wall of plants
Implementation Method 2
capable of bactericidal action, organic matter degradation
Implementation Method 3
The biopreparation effectively controls plant pathogens like Pseudomonas syringae and Pectobacterium carotovorum, restores soil biological balance, and promotes plant growth by secreting bacteriocins
Implementation Method 4
nitrogen fixation
Data Source
Figure 1A~1B
AI summary
The object of the invention is composition comprising isolated strains of saprophytic soil bacteria: Arthrobacter sp. strain 1.4, Bacillus sp. strain 202B, Bacillus sp. strain 233, Bacillus sp. strain 307A, Citrobacter sp. strain 6A, Peanibacillus sp. strain 45, Pseudomonas sp. strain 23 (W), Pseudomonas sp. strain 60 (W) deposited under the deposit number B/00148 in the Polish Collection of Microorganisms PCM, the biopreparation containing such composition and methods and uses thereof in agriculture.