Cable bacteria of the newly discovered species Ca. Electrothrix yaqonensis (Oregon State University)
A Shocking Discovery in Oregon’s Mudflats
In the serene mudflats of Oregon’s Yaquina Bay, scientists have uncovered a microscopic marvel: a new species of bacteria that conducts electricity. Named Candidatus Electrothrix yaqonensis in honor of the indigenous Yaquina people, this bacterium challenges our understanding of microbial capabilities.
The Intriguing World of Cable Bacteria
Cable bacteria are known for their unique ability to form long, filamentous chains that transport electrons across distances. These chains allow them to thrive in environments where oxygen is scarce by connecting deeper, oxygen-deprived layers of sediment to surface layers rich in oxygen. Dailyscitech
What sets Ca. Electrothrix yaqonensis apart is its hybrid nature. It exhibits genetic traits from both saltwater and freshwater cable bacteria, suggesting it may represent an evolutionary bridge between the two. Dailyscitech
Structural Marvels and Electrical Prowess
Under the microscope, this bacterium reveals pronounced ridges arranged in a spiral pattern, significantly thicker than those in its relatives. Encasing its filament is a transparent sheath, a feature not observed in other cable bacteria. This sheath likely serves as protection, ensuring the integrity of its conductive pathways. Dailyscitech
At the core of its conductivity are nickel-based protein fibers. These fibers efficiently transport electrons, showcasing electrical resistance comparable to or even surpassing that of known cable bacteria.
A filament of Ca. Electrothrix yaqonensis. (Oregon State University)
Adaptability in Fluctuating Environments
Living in brackish waters, Ca. Electrothrix yaqonensis has adapted to fluctuating salinity levels. Unlike its saltwater counterparts that use a specific enzyme to manage osmotic pressure, this species employs sodium-proton exchange proteins, highlighting its unique evolutionary adaptations. Dailyscitech
Implications for Bioelectronics and Environmental Cleanup
The discovery of Ca. Electrothrix yaqonensis opens doors to innovative applications. Its efficient electron transport system could inspire the development of biodegradable electronic devices and biosensors. Moreover, its ability to transfer electrons might be harnessed to remove pollutants from sediments, offering a natural solution for environmental remediation. Dailyscitech
The research has been published in Applied and Environmental Microbiology.
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