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A Hydroponic Co-cultivation System for Simultaneous and Systematic Analysis of Plant/Microbe Molecular Interactions and Signaling

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BSocial Tool Deciphers Highly Functional Plant Growth-Promoting Bacterial Consortia.

María García-Toledo^1,2, Antonio Castellano-Hinojosa^1,2, Andrea Ortiz-Úbeda^1,2

¹Environmental Microbiology Group, Institute of Water Research, University of Granada, Granada, Spain.

Microbial Biotechnology

|December 11, 2025

Summary

The BSocial tool effectively selects microbial consortia for biofertilizer development by analyzing strain interactions. This approach streamlines the design of efficient microbial products for agriculture.

Keywords:

BSocial biofertilizers microbial interactions plant growth‐promoting rhizobacteria

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Area of Science:

Microbiology
Biotechnology
Agricultural Science

Background:

Microbial consortia offer superior biotechnological efficiency compared to single strains.
High-throughput screening of numerous microbial communities is a significant challenge.
Predictive models are crucial for assessing functional efficiency and incorporating microbial diversity.

Purpose of the Study:

To evaluate the BSocial tool's efficacy in designing effective biofertilizers.
To analyze the social behavior and plant growth-promoting traits of microbial consortia.
To determine the optimal diversity and composition of microbial consortia for biofertilizer formulation.

Main Methods:

Utilized the BSocial tool to analyze the social behavior of 8 plant growth-promoting microorganisms.
Assessed 3 key plant growth-promoting traits: siderophore production, phosphate solubilization, and indole acetic acid production.
Evaluated 255 complete combinatorial communities and selected 3 high-performing social consortia (X22, X93, X149) with 2-4 species.

Main Results:

Two selected social consortia demonstrated high performance for multiple plant growth-promoting traits.
Functional stability was observed across evaluated traits as diversity increased, except for siderophore production.
The BSocial tool successfully identified promising consortia for biofertilizer applications.

Conclusions:

The BSocial tool is effective for selecting plant growth-promoting microbial consortia.
This methodology aids in the formulation of efficient biofertilizers.
The study highlights the potential of social behavior analysis in microbial community design.