Soil bacteria and fungi trade chemical messages, not just warfare
Wang Y, Xie J, Lin Y, Xu Z, Kovács ÁT
Soil Health
The biocontrol products and healthy soil microbiome you rely on to keep garden diseases in check depend on bacteria and fungi cooperating, not just one killing the other.
Scientists used to think bacteria and fungi in soil were mostly enemies, dueling with toxic chemicals. Turns out they also share food and send low-level chemical signals that change how the other behaves, sometimes helping each other grow or fight off plant diseases together. Researchers are studying one famous pairing, a bacteria called Bacillus and a fungus called Trichoderma, both already used in gardening products, to figure out how to engineer better teams of microbes for farms and gardens.
Key Findings
Bacteria and fungi exchange primary metabolites through cross-feeding and syntrophy, supporting mutualistic rather than purely antagonistic relationships.
Specialized compounds like volatile organic compounds, lipopeptides, and phenazines alter fungal physiology at sub-inhibitory (non-lethal) concentrations by reprogramming gene expression.
Bacillus-Trichoderma interactions shift between competition and cooperation depending on context, affecting biocontrol performance, plant growth promotion, and organic matter breakdown.
chevron_right Technical Summary
Bacteria and fungi don't just fight each other in the soil; they also trade nutrients and send chemical signals that reshape each other's biology, and scientists want to harness these partnerships for better crop protection and growth.
Abstract Preview
Original paper
Understanding metabolic interactions between bacteria and fungi for cross-kingdom consortia applications.
Bacterial-fungal interactions represent fundamental ecological associations that shape microbial community structure across diverse environments. While traditionally framed through the lens of anta...
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