Tactic Response of Shewanella oneidensis MR-1 toward Insoluble Electron Acceptors.

ABSTRACT: Exoelectrogenic bacteria are defined by their ability to respire on extracellular and insoluble electron acceptors and have applications in bioremediation and microbial electrochemical systems (MESs), while playing important roles in biogeochemical cycling. Shewanella oneidensis MR-1, which has become a model organism for the study of extracellular respiration, is known to display taxis toward insoluble electron acceptors, including electrodes. Multiple mechanisms have been proposed for MR-1's tactic behavior, and, here, we report on the role of electrochemical potential by video microscopy cell tracking experiments in three-electrode electrochemical cells. MR-1 trajectories were determined using a particle tracking algorithm and validated with Shannon's entropy method. Tactic respo

SUBMITTER: Oram J 

PROVIDER: S-EPMC6336422 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature