Fusarium Mycotoxin Pathway Analysis and Soil Microbiota Resistance in Maize Crops

Overview

Fusarium mycotoxins are toxic compounds produced by fungal species that infect maize and other staple grains, posing serious health risks to humans and livestock, including allergic reactions, cancer, and in severe cases, death. This research initiative investigates two critical questions: how mycotoxigenic Fusarium species transfer from soil into maize grains, and whether a healthy, balanced soil microbiome can suppress or resist these pathogens. By clarifying infection pathways and identifying beneficial soil microbes, the project aims to deliver practical knowledge that grain producers can use to reduce Fusarium contamination in the field and during storage.

Technical specifications

Infection pathway mapping:

• Monitoring of internal plant segments from root, stem, and pollen using electron microscopy
• Molecular tracking of Fusarium through fluorescent marking techniques, including genetic transformation mediated by Agrobacterium tumefaciens with GFP (green fluorescent protein) to visualize fungal movement
• Identification and comparison of mycotoxigenic Fusarium species present in at least five different maize grain samples

Soil microbiome analysis:

• Extraction of soil DNA from the rhizosphere, the zone of soil surrounding plant roots
• Metagenomic analysis to characterize microbial community composition and quantify beneficial microbes
• Phylogenetic analysis to establish evolutionary relationships among identified species
• Comparison of Fusarium species and microbiota profiles between rhizosphere and grain samples to determine whether vertical transfer occurs from soil to grain

Key features:

• Integration of microscopy and molecular biology for direct visualization of fungal colonization routes
• Metagenomic profiling to link soil microbial diversity with pathogen suppression potential
• Foundation for developing biological or cultural strategies to reduce pre-harvest mycotoxin contamination

Technology readiness level

The project is at an early to mid-stage research level, with planned validation steps including the identification of Fusarium species across multiple maize grain samples, comparative metagenomic analysis of rhizosphere microbiomes, and GFP-labeled tracking of vertical Fusarium transfer. The work is currently positioned in the experimental design and methodology validation phase, with results expected to generate foundational knowledge for future field-level applications and potential development of microbiome-based crop protection strategies.