Microbial remediation of PAHs in aquatic environments: advances, ssynergistic mechanisms, and emerging strategies.
Yang S, Wang M, Wang H, Yang Q, Yang Z
Phytoremediation
The creek or pond near your garden accumulates invisible petroleum compounds from road runoff and past spills — and the microbes naturally living there may finally have a biological assist from engineered consortia designed to eat those toxins before they enter plant roots and soils.
Tar-like chemicals from car exhaust, oil spills, and wildfires build up in rivers and ponds and are very hard to clean up. Scientists found that teaming up three types of tiny organisms — bacteria, fungi, and algae — causes them to work together in ways none of them can manage alone, breaking down these stubborn chemicals much more completely. The algae produce oxygen that the bacteria need, the fungi crack open the toughest molecules first, and sticky coatings the microbes produce help concentrate the pollutants so they can be digested faster.
Key Findings
Optimized multi-kingdom consortia (bacteria + fungi + microalgae) achieved up to 100% degradation of phenanthrene and pyrene — far exceeding single-organism approaches.
Sticky extracellular coatings produced by the microbial communities increased local pollutant concentration by 4.5–5.0% for pyrene and benzo[a]pyrene, acting as a natural concentrating mechanism.
A bibliometric analysis of 1,508 publications from 2020–2026 shows the field has shifted from searching for single 'super-degrader' strains toward understanding how interspecies teamwork drives cleanup efficiency.
chevron_right Technical Summary
Mixing bacteria, fungi, and algae together can break down toxic petroleum pollutants in water far more effectively than any single microbe alone — in ideal lab conditions, some combinations eliminated 100% of certain pollutants. The review maps out exactly how these microbial teams cooperate and what engineering tools could scale this into real-world cleanup.
Abstract Preview
Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants widely distributed in aquatic environments, originating from fossil fuel combustion, oil spills, industrial emissions, and ...
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