Research Topic: polycyclic aromatic hydrocarbons

Characterizing the Contaminant-Adhesion of a Dibenzofuran Degrader Rhodococcus sp.

Dibenzofuran is a toxic pollutant that bacteria can degrade, but the process of bacterial adhesion to this contaminant wasn’t well understood. Researchers found that the bacterium Rhodococcus sp. strain p52 produces sticky outer coatings called extracellular polymeric substances when exposed to dibenzofuran. These coatings change the bacteria’s surface properties, making them better able to stick to and degrade the pollutant. The study reveals how bacteria naturally adapt to efficiently clean up toxic contamination.

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Unlocking the biodegradative potential of native white-rot fungi: a comparative study of fiberbank organic pollutant mycoremediation

Swedish researchers tested 26 types of white-rot fungi to clean up polluted sediments from old pulp and paper mills called fiberbanks. These contaminated sediments contain harmful chemicals and heavy metals. The study found that three fungal species, especially Diplomitoporus crustulinus, were excellent at breaking down pollutants and could tolerate the toxic environment, making them promising for environmental cleanup efforts.

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Degradation of High Concentrations of Anthracene Using White-Rot Wood-Inhabiting Fungi and Investigation of Enzyme Activities

Scientists in Iran discovered that certain wood-decay fungi, particularly Trametes versicolor mushrooms, can effectively break down anthracene, a toxic pollutant from oil and gas industries. These fungi produce special enzymes that degrade the harmful chemical into less toxic substances. In laboratory tests, these indigenous Iranian fungi successfully removed 20-64% of high-concentration anthracene over four weeks, showing promise for cleaning up contaminated sites.

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Potential biodegradation of polycyclic aromatic hydrocarbons (PAHs) and petroleum hydrocarbons by indigenous fungi recovered from crude oil-contaminated soil in Iran

Scientists isolated fungi from oil-contaminated soil in Iran to find species that can break down petroleum pollutants. Two fungi species, Alternaria tenuissima and Epicoccum nigrum, showed exceptional ability to degrade harmful oil compounds called PAHs. When applied to contaminated soil in the laboratory, these fungi successfully eliminated over 70% of the long-chain hydrocarbons. This research offers a natural and cost-effective way to clean up oil-spilled soil without using harsh chemicals.

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Mycoremediation: Expunging environmental pollutants

Fungi can be used to clean up environmental pollution from industrial waste, pesticides, and heavy metals. Unlike expensive chemical treatments, fungal mycoremediation is cost-effective and environmentally friendly. Fungi produce natural enzymes that break down harmful pollutants into harmless substances, making it a promising solution for protecting soil and water contamination.

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In situ degradation of 2-methylnaphthalene by a soil Penicillium strain associated with fungal–bacterial interactions

Scientists discovered a new type of fungus called Penicillium sp. LJD-20 that can break down 2-methylnaphthalene, a toxic pollutant found in soil near oil fields. Using advanced microscopy and genetic analysis, researchers showed this fungus works with bacteria to completely remove the pollutant from contaminated soil within two weeks. This discovery suggests that fungi could be valuable allies in cleaning up environmental pollution caused by industrial chemicals.

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Enhancing Phenanthrene Degradation by Burkholderia sp. FM-2 with Rhamnolipid: Mechanistic Insights from Cell Surface Properties and Transcriptomic Analysis

Scientists studied how a natural soap-like substance called rhamnolipid can help bacteria degrade phenanthrene, a dangerous pollution compound found in oil-contaminated soil. They found that the right amount of this substance makes the bacteria better at breaking down the pollutant by changing the bacteria’s surface properties and activating specific genes. The research shows promise for developing better methods to clean up contaminated environments.

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