Plant roots judge microbes through shifting chemical conversations, not fixed rules
Dong Y, Shamsy R, Ahammed GJ
Plant Signaling
The soil under your tomatoes or roses is running a nonstop chemical negotiation, and understanding it is the key to microbiome-based treatments that could replace some fertilizers and pesticides in your own backyard.
Scientists used to think plants had a simple on-off switch for microbes: either attack them as germs or welcome them as helpful partners. This review shows that the real system is more like a sliding scale, where plants read chemical signals in the soil, including stress molecules and hormone-like compounds, to figure out in real time whether a microbe is dangerous, harmless, or beneficial. That flexible decision-making is what lets roots build the right neighborhood of helpful fungi and bacteria instead of a fixed guest list.
Key Findings
Plant-microbe recognition operates as a chemical continuum rather than a strict binary between immunity and symbiosis
Metabolites, volatiles, and peptides diffuse through aqueous and lipid-rich rhizosphere microenvironments to shape microbial recognition
Reactive oxygen species, phytohormones, and redox metabolites serve dual roles as stress signals and inter-organism communication tools
chevron_right Technical Summary
Plants don't sort microbes into simple friend-or-foe categories. Instead, roots read a constantly shifting chemical conversation of metabolites, gases, and signals to decide, moment by moment, whether a microbe deserves welcome, tolerance, or attack.
Abstract Preview
Original paper
Pathogenesis versus symbiosis: a dual perspective on plant-microbe interactions.
Plants function as integral components of soil ecosystems, embedded within diverse microbial consortia that engage in continuous chemical and informational exchange. This molecular dialog governs h...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Targeted knockout of a host peroxisomal peptidase confers field resistance to...
The corn in your grocery store and the staple food keeping millions of East African families fed is under serious threat from a viral disease that can wipe o...
Soil health is the capacity of soil to function as a living ecosystem, supporting complex interactions between microorganisms, soil fauna, and plant communities. For plant science, soil health is critical because these biological and chemical soil properties directly control nutrient availability,
arrow_forward Explore topic