Cable bacteria are centimetre-long, filamentous, multicellular bacteria present ubiquitously in freshwater and marine sediments, and participate in long-distance electron transfer by coupling the oxidation of sulphide in anoxic sediment to the reduction of oxygen. Cable bacteria possess an internal electric grid, enabling them to transport electrons over centimeter-scale distances.
These experiments might inspire novel methods to cultivate cable bacteria, besides also offering other applications like bioremediation and biosensing.
This mechanism might potentially uncover an unknown mode of oxygen production and lead to a new understanding of oxygen transport through the oxic-anoxic interface.
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