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Related Experiment Videos

Crude oil utilization by fungi.

J S Davies, D W Westlake

    Canadian Journal of Microbiology
    |February 1, 1979
    PubMed
    Summary

    Fungi from Canadian oil fields can degrade crude oil, but growth on simple hydrocarbons doesn't predict oil degradation. This research identifies potential oil-eating fungi for bioremediation.

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    Area of Science:

    • Environmental microbiology
    • Bioremediation
    • Fungal biotechnology

    Background:

    • Soil fungi play a role in hydrocarbon degradation.
    • Understanding fungal capabilities is crucial for environmental oil spill management.
    • Previous studies have explored hydrocarbon-degrading microorganisms with varying success.

    Purpose of the Study:

    • To screen fungal isolates from Canadian oil-producing soils for their ability to grow on crude oil and specific hydrocarbons.
    • To identify fungal genera and species capable of degrading crude oil components.
    • To assess the correlation between growth on pure hydrocarbons and crude oil degradation.

    Main Methods:

    • Static enrichment technique to isolate fungi from soil samples.
    • Culturing fungal isolates on n-tetradecane, toluene, naphthalene, and seven crude oils.
    • Gravimetric and gas-chromatographic analysis to quantify oil degradation.
    • Identification of fungal genera and species.

    Main Results:

    • Forty out of sixty fungal isolates demonstrated growth on one or more crude oils.
    • Penicillium and Verticillium spp. were frequently isolated from soils.
    • Isolated oil-degrading fungi include Beauveria bassiana, Mortieriella sp., Phoma sp., Scolecobasidium obovatum, and Tolypocladium inflatum.
    • Growth on pure n-alkanes was not a reliable indicator of crude oil degradation capability.
    • Demonstrated degradation of Rainbow Lake crude oil by specific fungal isolates.

    Conclusions:

    • Fungi from northern Canadian oil-producing soils possess significant potential for crude oil degradation.
    • The ability to utilize simple hydrocarbons does not fully predict crude oil biodegradation capacity.
    • Further research is needed to understand the environmental response and potential of fungi in oil spill bioremediation.

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