Plant biomass responses to PFAS exposure: A meta-analysis with implications for phytoremediation in terrestrial and aquatic systems.
Luche S, Buczny J, Visioli G
Summary
PubMedWhy it matters This matters because PFAS chemicals are already showing up in drinking water, garden soil, and the food supply — and this research helps identify which plants might protect your local waterways or flag when contamination is getting dangerously high.
Researchers pooled results from dozens of experiments to understand how 'forever chemicals' — the stubborn industrial compounds that never break down — affect plants. They found that these chemicals generally shrink the leafy, above-ground parts of plants, which makes sense since a stressed plant struggles to grow. The twist is that some water-dwelling plants actually grew bigger root systems when exposed, which could make them useful for pulling these chemicals out of polluted water.
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A large-scale review of 68 studies found that common industrial chemicals called PFAS — the 'forever chemicals' found in non-stick pans and water-resistant gear — generally stunt plant growth above ground, but surprisingly may cause some aquatic plants to grow larger roots. This has real implications for using plants to clean up contaminated environments.
Key Findings
Across 776 observations from 68 studies, PFAS exposure consistently reduced whole-plant and aboveground biomass, confirming broad phytotoxic effects.
Belowground (root) biomass in aquatic species — especially water hyacinth (E. crassipes) and jointed rush (B. articulata) — tended to increase with PFAS exposure, a counterintuitive finding with phytoremediation potential.
The severity of plant responses was heavily dependent on exposure concentration, suggesting dose-response relationships are critical for designing clean-up or ecotoxicology studies.
Abstract Preview
Given the widespread distribution of per- and polyfluoroalkyl substances (PFAS) in the environment and their tendency to bioaccumulate in living organisms, it is crucial to understand PFAS-plant in...
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