Beneficial microbe consortium to restore leaf microbiome resilience after fungicide applications
A microbiome-based agricultural solution that uses beneficial yeast and bacterial consortia to restore leaf microbiome resilience following fungicide applications. The approach targets non-target effects on beneficial phyllosphere microbes to delay pathogen resurgence, potentially reducing the need for repeated fungicide treatments and preserving beneficial microbial species.
Overview
This agricultural biotechnology solution addresses a critical challenge in crop protection: the unintended damage that fungicide applications cause to beneficial microbial communities on leaf surfaces. By identifying non-target effects of fungicides through microbiome sequencing and deploying a carefully selected beneficial yeast and bacterial consortium, the technology helps rebuild the leaf microbiome after fungicide treatment. The result is a delayed resurgence of pathogens, which can reduce the number of fungicide applications required and preserve beneficial microbial species that support plant health.
Technical specifications
Core approach:
- Microbiome sequencing to identify non-target effects of fungicides on phyllosphere (leaf surface) microbial communities
- Isolation and characterization of over 80 phyllosphere yeasts, including members of the Tremellomycete class
- Development of synthetic microbial consortia combining beneficial yeasts and bacteria
- Application of these consortia to crop leaf surfaces following fungicide treatment to restore microbial balance
Key findings from preliminary research:
- Foliar fungicide application reduced abundance of both pathogens and non-target beneficial yeasts
- Fungal community composition was altered for at least one month after a single fungicide application
- Tremellomycete yeasts were disproportionately affected, suggesting a previously unrecognized ecological role
- Isolated phyllosphere yeasts demonstrated the potential to reduce soybean germination time
Technology readiness level
The technology is currently at an early-to-mid stage of development. Preliminary research has demonstrated proof of concept for identifying fungicide non-target effects and isolating beneficial phyllosphere microbes. Ongoing work includes microbiome sequencing following fungicide applications and culturing efforts to build synthetic microbial consortia for crop application. Future validation will focus on understanding pathogen recovery rates compared to non-pathogenic communities, isolating and identifying additional beneficial yeasts and bacteria, and testing whether synthetic consortia can effectively colonize leaf surfaces and prevent pathogen resurgence after fungicide treatment.
About Auburn University
Auburn University is a comprehensive public land‑grant research university serving industry from its main campus in Auburn, Alabama. Companies engage through a research and technology park offering on‑site convening space and services, and via a Huntsville Research and Innovation Campus embedded in Cummings Research Park near Redstone Arsenal. A long‑standing cooperative education program and a statewide extension network link employers to student talent and field deployment across Alabama. Research is supported by competitive federal funding from agencies such as NSF, USDA, DoD, and NASA. The university’s Intellectual Property Exchange provides IP management, licensing, and commercialization support.
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