Bacillus Velezensis Composition for Fire Blight and Rice Blast Control

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Solution Overview

Problem

Current agricultural solutions for controlling fire blight and rice blast diseases are inadequate, with limited efficacy and environmental impact, and there is a need for sustainable, target-specific biological plant protection agents (BPPAs) against Erwinia amylovora and Magnaporthe oryzae.

Innovation Solution

A novel strain of Bacillus velezensis (I21) is developed, characterized by specific genomic sequences, which effectively inhibits the growth of fire blight and rice blast pathogens through biosynthetic metabolites and biofilm formation, formulated with suitable additives for application as a biological plant protection agent.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chemical-based pesticides and copper salts are used to control fire blight, then disease control effectiveness is improved, but environmental pollution and pesticide accumulation in soil worsen

Engineering Contradiction:

Improvedisease control effectivenessVSAvoidenvironmental pollution

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces chemical-based pesticides and copper salts with a biological control agent (Bacillus velezensis strain I21). This substitution eliminates the environmental pollution and soil accumulation issues associated with chemical pesticides while maintaining disease control effectiveness through the bacterium's natural antagonistic properties against E. amylovora.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The biological control agent uses a living bacterial strain that can be applied and will naturally decompose after completing its protective function, avoiding the persistent environmental contamination caused by chemical pesticides. The strain is replaced naturally through application rather than requiring long-term persistence in the environment.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If antibiotics such as streptomycin or tetracycline are used to control E. amylovora, then disease control effectiveness is improved, but microbial resistance development worsens

Engineering Contradiction:

Improvedisease control effectivenessVSAvoidmicrobial resistance

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent replaces antibiotic treatment with biological control using Bacillus velezensis strain I21. This substitution eliminates the selection pressure that drives antibiotic resistance development in E. amylovora populations, while maintaining effective disease control through the bacterium's production of antimicrobial metabolites and competitive exclusion mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If copper salts and aluminium phosphates are used extensively for fire blight control, then disease suppression is improved, but pesticide accumulation in soil worsens

Engineering Contradiction:

Improvedisease suppressionVSAvoidpesticide accumulation in soil

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The biological control agent is a living organism that performs its protective function temporarily and then naturally decomposes, preventing the cumulative buildup in soil that occurs with repeated applications of copper salts and aluminium phosphates. The strain is replenished through periodic application rather than accumulating in the environment.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 Bacillus velezensis strain I21 demonstrates strong in vitro inhibition of Erwinia amylovora and Magnaporthe oryzae, reducing disease symptoms and providing effective control with minimal environmental impact.

Implementation Method 1

effectively inhibits the growth of fire blight and rice blast pathogens through biosynthetic metabolites

Methodology Applied

Scientific EffectAntimicrobial metabolite production:

Implementation Method 2

formulated with suitable additives for application as a biological plant protection agent

Methodology Applied

Scientific EffectBiofilm formation:

Data Source

PatentUS20260026509A1Biological plant protection agent, methods and uses thereof

Publication Date: 2026.01.29 INNOVPLANTPROTECT ASSOCIAÇÃO

AI summary

The present disclosure relates to a Bacillus velezensis strain, and a composition for plant protection comprising an effective amount of said Bacillus velezensis. The disclosed Bacillus velezensis strain or composition can be used as a biological plant protection agent. A method for protecting or treating plants and/or fruit from fungal or bacterial infections comprising applying an effective amount of the Bacillus velezensis strain or the composition is also disclosed.