Microbial Biofertilizer Composition for Abiotic Stress Tolerance

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Solution Overview

Problem

Existing methods fail to effectively enhance plant growth and abiotic stress tolerance, particularly in the face of drought, heat, low fertility, and salinity, leading to significant economic losses in crop yields and food shortages.

Innovation Solution

A microbial inoculant biofertilizer composition comprising P. aspalathi WSF14 and P. aspalathi WSF23, combined with agents like cell protectants, carriers, and emulsifiers, is applied to plants and soil to promote growth and resilience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional fertilizers are used to promote plant growth, then plant growth and yield are improved, but plant tolerance to abiotic stress (drought, salinity, heat) deteriorates

Engineering Contradiction:

Improveplant growth and yieldVSAvoidabiotic stress tolerance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The invention uses composite microbial formulations containing multiple bacterial strains (P. aspalathi WSF14 and P. aspalathi WSF23) combined with protective agents and carriers. This composite approach allows simultaneous delivery of growth-promoting functions and stress-tolerance mechanisms, resolving the contradiction between improving productivity and maintaining reliability under abiotic stress conditions

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The microbial inoculants act as intermediaries between the plant and the abiotic stress environment. These bacteria produce exopolysaccharides, siderophores, and other metabolites that mediate the plant's interaction with stressful conditions, enabling both growth promotion and stress tolerance simultaneously

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If plants are exposed to abiotic stress conditions, then natural selection occurs, but crop yield and economic productivity deteriorate

Engineering Contradiction:

Improvestress adaptationVSAvoidcrop yield

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The invention applies microbial inoculants to seeds or soil before plants are exposed to abiotic stress. The bacteria establish protective mechanisms in advance (producing exopolysaccharides, modifying osmotic pressure, enhancing antioxidant systems) so that when stress occurs, the plant is already primed for tolerance, preventing yield loss while maintaining adaptability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The microbial inoculants induce physiological parameter changes in plants, including altered gene expression, increased antioxidant enzyme activity, modified hormone levels, and changed osmotic potential. These parameter changes enable the plant to maintain productivity across a wider range of abiotic stress conditions

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12590043B2Compositions and methods for improving plant growth and abiotic stress tolerance

Publication Date: 2026.03.31 RUTGERS THE STATE UNIV

AI summary

Compositions and methods for enhancing plant growth and resistance to abiotic stressors are disclosed.