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Dissimilatory Iron(III) Reducing Bacteria

Dissimilatory Iron(III) Reducing Bacteria. Camille Jones Hopkins Microbiology Course 2012. What do they do?. Shewanella sp . Simple Fermentation Products + Fe(OH) 3  Fe 2+ + HCO 3 -. Image: Pacific Northwest National Laboratory . Who are they?.

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Dissimilatory Iron(III) Reducing Bacteria

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  1. Dissimilatory Iron(III)Reducing Bacteria Camille Jones Hopkins Microbiology Course 2012

  2. What do they do? Shewanellasp. Simple Fermentation Products + Fe(OH)3  Fe2+ + HCO3- Image: Pacific Northwest National Laboratory

  3. Who are they? Lovley, DR, Holmes, DE, Nevin, KP. 2004. Dissimilatory Fe(III) and Mn(IV) Reduction. Advances in Microbial Physiology

  4. How do you isolate them? t = 0 t = transfer t = initial Lactate Fe(III)- hydroxide No O2 Magnetite Ferrihydrite Images: Katrin Richter and Camille Jones

  5. 2012 HMC Results

  6. Environmental Connections • Links with nitrogen (N) and uranium (U) cycles • Promotion of arsenic (As) contamination • Aromatic hydrocarbon contaminant degradation • Microbial fuel cells

  7. Environmental Dynamics Niche: High Fe(III) No other e- acceptors Selection Ecological Evolutionary Shewanellasp. Geobactersp. Fitness

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