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Research Themes > Microbial Reduction of Iron

Microbial Reduction of Iron



    We have recently studied the mechanism of electron transfer to insoluble Fe(III) oxides, and the impact of such transformations in a range of environments, including freshwater, marine, brackish, acid mine drainage and high pH sediments. Current projects also focus on the molecular scale interactions between Fe(III)-reducing bacteria and iron oxide surfaces. We also have an interest in the biotechnological potential of biogenic Fe(II) minerals , and we have been partners in an EU Marie Curie BIOTRACS programme studying the biogeochemistry of trace metals, including Fe, in marine environments (with the Universities of Southampton, Bristol and Leeds) and are involved with the ESF “The Functionality of Iron Minerals in Environmental Processes (FIMIN)” programme.

Recent Publications



Coker, V.S., Bennett, J., Cutting, R.S., Charnock, J.M., van der Laan, G., Vaughan, D.J., Wood, J., Shannon, I., Pattrick, RAD, Pearce, C.I., Telling, N., Arenholz, E., Lloyd, J.R. (2010)  Microbial engineering of nanoheterostructures: Biological synthesis of a novel magnetically-recoverable palladium nanocatalyst .  ACS Nano 4 2577-2584

Wilkins, M.J., Livens, F.R., Vaughan, D.J., Beadle, I., Small, J.S. and Lloyd, J.R. (2010) Fe(III) Reduction in the Subsurface at a Low-Level Radioactive Waste Disposal Site. Geomicrobiology Journal 27 231-239

Coker, V.S., Telling, N.D., van der Laan, G., Pattrick, RADP, Pearce, C.I., Arenholz, E., Tuna, F., Winpenny, R., Lloyd, J.R. (2009) Harnessing microbial subsurface metal reduction activities to synthesise nanoscale cobalt ferrite with enhanced magnetic properties.  ACS Nano 3, 1922-1928 DOI: 10.1021/nn900293d

Belzano, S., Statham, P.J., Pancost, R.D. and Lloyd, J.R. (2009) Role of microbial populations in the release of reduced iron to the water column from marine aggregates. Aquatic Microbial Ecology  54 291-303

Cutting R.S., Coker V.S., Fellowes J.W., Lloyd J.R. and Vaughan D.J. (2009) Mineralogical and morphological constraints on Fe(III) reduction by Geobacter sulfurreducens  Geochimica et Cosmochimica Acta 73 4004-4022

Coker, V.S., Pearce, C.I., Pattrick, R.A.D.P., van der Laan, G., Telling, N., Charnock, J.M., Arenholz, E. and Lloyd, J.R. (2008) Probing the site occupancies of Co-, Ni-, and Mn-substituted biogenic magnetite using XAS and XMCD. American Mineralogist 93, 1119–1132
Coker, V.S., Bell, A.M.T., Pearce, C.I., Pattrick, R.A.D., van der Laan, G. Lloyd, J.R. (2008) Time-resolved synchrotron X-ray powder diffraction study of the formation of magnetite by the Fe(III)-reducing bacterium, Geobacter sulfurreducens. American Mineralogist 93 540–547
von Canstein, H., Ogawa, J., Shimizu, S. and Lloyd, J.R. (2008) Secretion of flavins by Shewanella species and their role as extracellular redox mediators. Applied and Environmental Microbiology. 74 615-623
Coker, V.S., Pearce, C.I., Lang, C., van der Laan, G., Pattrick, R.A.D., Telling, N.D., Schüler, D., Lloyd, J.R. (2007) Cation site occupancy of biogenic magnetite compared to polygenic ferrite spinels determined by X-ray magnetic circular dichroism Eur. J. Mineral., 19, 707–716
Adams, L.K., J.M. Harrison, S. Langley, D. Fortin, J. R. Lloyd (2007). Activity and Diversity of Fe(III)-Reducing Bacteria in a 3000 Year Old Acid Mine Drainage Site Analogue. Geomicrobiology Journal 24 295–305
Wilkins, M.J., Wincott, P.L., Vaughan, D.J., Livens, F.R. and Lloyd, J.R. (2007) Growth of Geobacter sulfurreducens on poorly crystalline Fe(III) oxyhydroxide coatings: an integrated study combining light and electron microscopy with X-ray photoelectron spectroscopy. Geomicrobiology Journal 24 199–204
Adams, L.K., C. Boothman and J. R. Lloyd (2007) Identification and characterisation of a novel acidotolerant Fe(III)-reducing bacterium from a 3000 year old acidic rock drainage site. FEMS Microbiology Letters 268 151-157
Coker, V.S., Richard AD Pattrick, Gerrit van der Laan & Jonathan R Lloyd (2006) Formation of magnetic minerals by non-magnetotactic prokaryotes In Magnetoreception and Magnetosomes in Bacteria, Ed Dirk Shuler Series; Microbiology Monographs (editor: Prof A Steinbuchel). Springer P275-300
Lloyd, J.R., Leang, C., Hodges Myerson, A.L., Coppi, M., Cuifo, S., Methe, B., Sandler, S.J. and Lovley, D.R. (2003) Biochemical and genetic characterization of PpcA, a periplasmic c-type cytochrome in Geobacter sulfurreducens. Biochemical Journal 369 153-161


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