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Current production and metal oxide reduction by Shewanella oneidensis MR-1 wild type and mutants.
Authors:
Bretschger, Orianna
Obraztsova, Anna
Sturm, Carter A.
Chang, In Seop
Gorby, Yuri A.
Reed, Samantha B.
Culley, David E.
Reardon, Catherine L.
Barua, Soumitra
Romine, Margaret F.
Zhou, Jizhong
Beliaev, Alex S.
Bouhenni, Rachida
Saffarini, Daad
Mansfeld, Florian
Kim, Byung Hong
Fredrickson, Jim K.
Nealson, Kenneth H.
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| Abstract: 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 degree of participation in each process is very different. Overall, these data suggest a very complex picture of electron transfer to solid and soluble substrates by S. oneidensis MR-1. |
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| Publication Date: |
01 Nov 2007
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| Report numbers: |
PNNL-SA-57449
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| DOE Contract number: |
AC05-76RL01830
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| Resource Type: |
Journal Article
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| Resource Relation: |
Journal: Applied and Environmental Microbiology, 73(21):7003-7012; Journal Volume: 73; Journal Issue: 21
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| Research Organizations: |
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
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| Sponsoring Organizations: |
USDOE
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| Country of Publication: |
United States
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| Language: |
English
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