Bionanotechnology Lab of Kazan Federal University works on adapting nematodes to consuming oil waste.
Co-author, Chief Research Associate Rawil Fakhrullin explains, “We’ve improved existing methods of biological remediation of soils. Our lab experiment was successful, and we have a new way of delivering oil-consuming bacteria into the soil.”
The team wanted to find out whether parasitic nematodes can serve as “public transit” for marine bacteria which can consume and break down oil products into fatty acids.
“We took Caenorhabditis elegans nematodes and fed them Alcanivorax borkumensis bacteria. Nematodes have bacteria as a usual part of their diet, so there were no negative consequences for them. Furthermore, undigested bacteria changed the gut microflora of worms, which led to enhanced digestion of oil, and then left their bodies through natural ways. As another takeaway from the experiment, we found out that worms can themselves eat oil products if they are not fed anything else,” says Fakhrullin.
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Image: Dark-field image of crude oil droplets (a) and hyperspectral dark-field image of nematode intestine merged with hyperspectral crude oil mapping (b), obtained using reflected light spectra of intact crude oil and oil in intestine of C. elegans nematode (c). Dark-field microscopy images demonstrating the localisation of crude oil in the Dauer larvae nematodes' intestines after incubation for 42 h from L1 larvae stage: inside the foregut (d); in the midgut (e) and inside the hindgut (f). (Credit: Kazan Federal University)