Insect herbivory reshapes rhizosphere bacterial and fungal networks in a stage-specific manner.
Leite-Mondin M, Auler PA, Oliveira RL, Barros FMR, Andreote FD
Soil Health
The caterpillars or aphids chewing on your tomatoes and roses are secretly rewiring the microbial communities in your garden soil, potentially altering the very microbes your plants depend on to absorb nutrients and resist disease.
Plants don't just react to insect bites with their leaves — the damage signal travels all the way down to the roots, reshaping which bacteria and fungi live in the surrounding soil. Interestingly, a plant being eaten by an actual insect produces different underground changes than one that's simply cut or torn. The plant's age and growth stage also determines how dramatic this underground reshuffling turns out to be.
Key Findings
Insect herbivory restructures both bacterial and fungal networks in the rhizosphere (root-zone soil), with the magnitude and direction of change tied to the plant's developmental stage at the time of attack.
Insect-driven microbiome changes are distinct from those caused by mechanical damage alone, indicating that insect-specific cues — not just physical wounding — drive the underground response.
The reorganization is network-level, meaning not just which species are present, but how they interact with each other changes in response to herbivory.
chevron_right Technical Summary
When insects feed on plants, they trigger changes in the communities of bacteria and fungi living around the roots — and these changes depend on how mature the plant is and are distinct from what happens with simple physical wounding.
Abstract Preview
Plants interact with diverse above- and belowground biota, with defense phenotypes shaped by these multiorganismal networks, particularly in the rhizosphere. We tested how insect herbivory reorgani...
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