Farm-Adapted Microbial Consortia for Biological Control of Plant Pathogenic Fungi

Overview

This solution offers a protocol for the isolation and molecular characterization of native antagonistic microorganisms derived directly from target crop farms. By leveraging the farm's existing microbiota, which is already adapted to local conditions and has co-evolved with the pathogenic fungi present in that environment, the approach enables the design of tailored microbial consortia for biological disease control. The goal is to provide an effective, sustainable alternative to chemical fungicides while preserving the natural diversity and balance of the phytobiome, the microbial community associated with plants.

Technical specifications

Core approach:

• Microbial strains are collected and isolated from the same farm environment as the target plant pathogenic fungi, ensuring ecological compatibility
• Isolated strains are screened for antagonistic activity against fungal pathogens including Botrytis, Fusarium, Colletotrichum, Penicillium, and Nothophoma
• Bacterial genera with confirmed antagonistic effects include Pseudomonas, Bacillus, and Proteus; fungal genera include Trichoderma
• Microbial consortia are designed from combinations of these strains and validated in vitro for strong inhibitory effects against multiple fungal pathogens
• Genome sequencing and functional gene annotation of isolated strains are used to identify candidate genes responsible for the antagonistic effects
• Differential gene expression analysis during fungal interaction validates the molecular basis of antagonism
• Characterization protocols are developed to efficiently screen microbial strains and communities for potential biocontrollers

Key advantages:

• Uses native, farm-adapted microbes rather than external strains, reducing the risk of disrupting the local phytobiome balance
• Minimizes long-term risks such as loss of microbial diversity and fungal resistance development associated with introducing non-native biological controls
• Applicable across multiple crop systems and a broad range of fungal pathogens

Technology readiness level

Microbial strains with strong antagonistic effects against plant pathogenic fungi have been successfully isolated from specific farms, and in vitro validation of designed consortia has been completed against multiple fungal genera. The next phase involves genome sequencing, functional gene annotation, and differential expression analysis to elucidate the molecular mechanisms of antagonism and to build scalable screening protocols for biocontroller identification. The technology is at an early-to-intermediate stage of development, with proof-of-concept in vitro results achieved and molecular validation underway.