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Current production and metal oxide reduction by Shewanella oneidensis MR-1 wild type and mutants (vol 73, pg 7003, 2007)

Journal Article · · Applied and Environmental Microbiology
DOI:https://doi.org/10.1128/AEM.02560-07· OSTI ID:1014260
 [1];  [2];  [1];  [1];  [3];  [4];  [1];  [5];  [3];  [3];  [3];  [3];  [1];  [1];  [1];  [6];  [3];  [7]
  1. University of California, Los Angeles
  2. University of Southern California, Los Angeles
  3. ORNL
  4. Pacific Northwest National Laboratory (PNNL)
  5. Montana State University
  6. Harbin Institute of Technology & Korea Institute of Science and Technology
  7. University of Southern California
+ Show Author Affiliations
Shewanella oneidensis MR-1 is a gram-negative facultative anaerobe capable of utilizing a broad range of electron acceptors, including several solid substrates. S. oneidensis MR-1 can reduce Mn(IV) and Fe(III) oxides and can produce current in microbial fuel cells. The mechanisms that are employed by S. oneidensis MR-1 to execute these processes have not yet been fully elucidated. Several different S. oneidensis MR-1 deletion mutants were generated and tested for current production and metal oxide reduction. The results showed that a few key cytochromes play a role in all of the processes but that their degrees of participation in each process are very different. Overall, these data suggest a very complex picture of electron transfer to solid and soluble substrates by S. oneidensis MR-1.
Research Organization:
Oak Ridge National Laboratory (ORNL); Oak Ridge National Environmental Research Park
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1014260
Journal Information:
Applied and Environmental Microbiology, Journal Name: Applied and Environmental Microbiology Journal Issue: 2 Vol. 74; ISSN 0099-2240
Country of Publication:
United States
Language:
English

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Related Subjects

30 DIRECT ENERGY CONVERSION
BINDING ENERGY
CYTOCHROMES
ELECTRON TRANSFER
ELECTRONS
FUEL CELLS
MUTANTS
OXIDES
PRODUCTION
SUBSTRATES
VALENCE