Ocean algae quietly breaks down antibiotic pollution using its own enzymes
Wu X, Chen J, Du H, Ye Z, Zhang S
Phytoremediation
The same antibiotics that run off from farms and fish hatcheries into rivers and coastal waters are being dismantled by a microscopic algae, hinting at a low-cost biological cleanup tool that could protect the waterways feeding your local wetlands and estuaries.
Scientists studied a tiny marine algae called Phaeodactylum tricornutum and found it can eat away at tetracycline, a common antibiotic that pollutes water from farms and aquaculture. The algae doesn't just tolerate the drug, it actively breaks it apart using several different internal enzymes, clearing out 88% of the antibiotic in their test water. This points to a future where we could use algae instead of chemicals to clean up drug pollution in oceans and waterways.
Key Findings
P. tricornutum degraded 88.4% of a 4 mg/L tetracycline solution
The algae uses at least five distinct enzyme pathways, including metallo-beta-lactamase and cytochrome P450, to break down the antibiotic
The organism adapts physiologically to tetracycline exposure through cellular homeostasis and energy reallocation, allowing it to survive while degrading the pollutant
chevron_right Technical Summary
A single-celled marine algae can break down 88% of the antibiotic tetracycline in water within days, using a suite of enzymes to chop the drug apart, offering a cheap, chemical-free way to clean up antibiotic pollution in oceans and waterways.
Abstract Preview
Original paper
Pathways and functional enzyme-mediated mechanisms of tetracycline biodegradation by the marine microalgae Phaeodactylum tricornutum.
The widespread use of tetracycline and its consequent aquatic pollution pose significant risks to environmental and human health. Recently, microalgae have been demonstrated as a promising, environ...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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Phaeodactylum tricornutum is a diatom, the only species in the genus Phaeodactylum. Unlike other diatoms, P. tricornutum can exist in different morphotypes and changes in cell shape can be stimulated by environmental conditions. This feature can be used to explore the molecular basis of cell shap...