Cable bacteria (family Desulfobulbaceae) represent a remarkable group of filamentous microorganisms capable of conducting electrons across centimeter-scale distances through sediments, a process known as long-distance electron transfer (LDET). This unique metabolism links spatially separated redox reactions, profoundly influencing sediment biogeochemistry and nutrient cycling. In this talk, I will discuss recent discoveries of a novel cable bacterium species (Candidatus Electrothrix yaqonensis), its distinctive morphology and genomic traits, and how its conductive filaments enable energy flow across anoxic–oxic interfaces. I will also explore emerging environmental applications of cable bacteria, including their potential roles in sustainable environmental remediation.
Cheng Li is an assistant professor in the Department of Biological & Ecological Engineering at ¾«¶«Ó°ÊÓ State University. His research integrates environmental microbiology, bioelectrochemical systems, and sediment biogeochemistry to engineer sustainable technologies for environmental sensing, remediation, and resource recovery. Li’s work spans microbial fuel cells, cable bacteria, and electroactive microbial communities, with support from agencies including DARPA and the Office of Naval Research. He is also committed to inclusive mentorship and interdisciplinary collaboration across microbiology, engineering, and coastal systems.