Methylobacterium Compositions for Root Lesion Nematode Control

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Solution Overview

Problem

Current methods are inadequate in effectively controlling Root Lesion Nematode (RLN) damage to plants and reducing their populations in soil, leading to issues such as reduced plant growth, yield, water-deficit tolerance, and chlorosis.

Innovation Solution

The use of isolated Methylobacterium sp., specifically strains like NLS0021, NLS0038, NLS0042, NLS0934, NLS0062, NLS0069, and NLS0089, or their derivatives, in the form of compositions, cell-free culture supernatants, or concentrates, applied to plants or soil to inhibit RLN activity and reduce their populations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional methods are used to control Root Lesion Nematode damage, then some level of protection is provided, but the control effectiveness is inadequate and RLN populations remain high

Engineering Contradiction:

ImproveRLN control effectivenessVSAvoidplant growth and yield

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent changes the biological parameter by introducing specific Methylobacterium sp. strains (NLS0021, NLS0038, NLS0042, NLS0934, NLS0062, NLS0069, NLS0089) with proven nematicidal activity. These bacteria produce compounds that significantly reduce RLN populations by up to 95%, thereby resolving the contradiction between reliable RLN control and maintaining plant productivity.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The Methylobacterium sp. strains act as intermediary organisms that mediate between the plant and RLN. The bacteria colonize the rhizosphere and directly inhibit RLN through nematicidal compounds, providing effective control while maintaining ecosystem balance and plant health, thus improving both reliability and productivity simultaneously.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If higher concentrations of nematicides are applied to reduce RLN populations, then RLN control improves, but environmental harm and non-target organism damage increase

Engineering Contradiction:

ImproveRLN population reductionVSAvoidenvironmental impact

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potential harm of chemical nematicides into benefit by using biocontrol agents. Methylobacterium sp. strains provide effective RLN population reduction (up to 95%) through natural nematicidal mechanisms, eliminating the need for harsh chemical interventions and their associated environmental damage.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The biocontrol approach uses living bacterial cells that naturally degrade after completing their nematicidal function. The Methylobacterium sp. strains perform their protective role and then diminish, avoiding persistent environmental contamination associated with synthetic nematicides.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS12419310B2Methods and compositions for controlling root lesion nematodes

Publication Date: 2025.09.23 NEWLEAF SYMBIOTICS INC

AI summary

The present disclosure provides compositions comprising Root-Lesion Nematode (RLN)-inhibitory Methylobacterium sp., as well as cell-free culture supernatants, fractions, and concentrates obtained from the Root-Lesion Nematode (RLN)-inhibitory Methylobacterium sp. Also provided are related methods for controlling RLN infections of plants, and methods of making the compositions.