Title: How E. coli Found a Way to Breathe Without Oxygen—Using Electricity!

Once upon a time, there were humble E. coli bacteria, the microscopic workhorses found in our guts and widely used across scientific research and industry. Scientists knew them well—or so they thought. These tiny organisms were believed to only thrive in certain environments, mainly oxygen-rich or in the presence of fermentable sugars.

Every day, researchers used E. coli in labs to produce medicines, synthesize chemicals, and study fundamental biology. But their use was largely limited to conventional conditions—oxygen or sugar-based fermentation. E. coli, for all its versatility, was still bound by the same rules of microbial metabolism… or so the story went.

Until one day, scientists at Rice University made an astonishing discovery: a particular strain of E. coli bacteria could not only survive—but actually grow—without oxygen. How? By using electricity.

Because of that, researchers discovered that this unique E. coli strain could transport electrons to external metallic ions, essentially generating electricity. This bioelectrical trick enabled these bacteria to "breathe" in oxygen-deprived environments—using electricity as a stand-in for the usual energy-producing biochemical processes.

Because of that, the implications began to unfold. If E. coli could generate and channel electricity, this opened pathways to developing new bioelectrochemical systems—technologies that convert biological processes into electrical energy and vice versa. Think wastewater treatment plants powered by microbial fuel cells… or industrial production processes supported by bacteria that don’t need oxygen to thrive.

Ever since then, the scientific community has been buzzing with possibilities. This discovery not only redefines what we thought we knew about microbial metabolism, but it also sets the stage for green innovations in energy, environmental cleanup, and sustainable manufacturing. E. coli just got a whole lot more electric—and the future is brighter because of it.

Source Link: https://www.aip.org/fyi/the-week-of-may-26-2025