What drives shewanella oneidensis motility in anaerobic conditions?
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Shewanella oneidensis MR-1 exhibits motility in anaerobic conditions primarily through the utilization of the H+-driven MotAB stator unit, acquired possibly via lateral gene transfer . This motility allows S. oneidensis to accumulate and maintain metabolic activity for nitrate reduction even in the presence of toxic concentrations of ciprofloxacin . Additionally, S. oneidensis demonstrates enhanced chemotactic responses towards electron acceptors like oxygen and oxidized riboflavin under anaerobic conditions, with increased migration speeds in environments with high flavin+ concentrations . The motility and biofilm formation of S. oneidensis are also influenced by riboflavin production and excretion, triggering specific responses that can lead to increased current densities in bioelectrochemical systems .
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| Papers (5) | Insight |
|---|---|
| Extracellular riboflavin induces anaerobic biofilm formation in Shewanella oneidensis by triggering a specific biofilm response, not motility, through a quorum-sensing mechanism based on riboflavin concentration. | |
18 Citations | Not addressed in the paper. |
26 Citations | Shewanella oneidensis motility is enhanced by oxidized riboflavin in anaerobic conditions, acting as a chemoattractant, influencing migration patterns in bioelectrochemical systems. |
| Mutations in the plug domain of the MotB stator in Shewanella oneidensis enable swimming in anaerobic conditions by altering proton interactions, increasing torque output, and allowing movement at lower pmf values. | |
| Swimming motility enables Shewanella oneidensis MR-1 to reduce nitrate in toxic ciprofloxacin gradients under anaerobic conditions, facilitating metabolic activity despite high antibiotic concentrations. |
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