@article {3144,
	title = {Electrobiocommodities: powering microbial production of fuels and commodity chemicals from carbon dioxide with electricity.},
	journal = {Curr Opin Biotechnol},
	volume = {24},
	year = {2013},
	month = {2013 Jun},
	pages = {385-90},
	abstract = {<p>Electricity can be an energy source for microbially catalyzed production of fuels and other organic commodities from carbon dioxide. These electrobiocommodities (E-BCs) can be produced directly via electrode-to-microbe electron transfer or indirectly with electrochemically generated electron donors such as H2 or formate. Producing E-BCs may be a more efficient and environmentally sustainable strategy for converting solar energy to biocommodities than approaches that rely on biological photosynthesis. A diversity of microbial physiologies could potentially be adapted for E-BC production, but to date acetogenic microorganisms are the only organisms shown to covert electrically generated low potential electrons and carbon dioxide into multi-carbon organic products with high recovery of electrons in product. Substantial research and development will be required for E-BC commercialization.</p>},
	keywords = {Bioelectric Energy Sources, Carbon Dioxide, Cell Respiration, Chemical Industry, Electricity, Methane, Microbiology, Oxygen, Renewable Energy},
	issn = {1879-0429},
	doi = {10.1016/j.copbio.2013.02.012},
	author = {Lovley, Derek R and Nevin, Kelly P}
}
@article {3138,
	title = {Field evidence of selenium bioreduction in a uranium-contaminated aquifer.},
	journal = {Environ Microbiol Rep},
	volume = {5},
	year = {2013},
	month = {2013 Jun},
	pages = {444-52},
	abstract = {<p>Removal of selenium from groundwater was documented during injection of acetate into a uranium-contaminated aquifer near Rifle, Colorado (USA). Bioreduction of aqueous selenium to its elemental form (Se0) concentrated it within mineralized biofilms affixed to tubing used to circulate acetate-amended groundwater. Scanning and transmission electron microscopy revealed close association between Se0 precipitates and cell surfaces, with Se0 aggregates having a diameter of 50-60 nm. Accumulation of Se0 within biofilms occurred over a three-week interval at a rate of c. 9 mg Se0 m(-2) tubing day(-1). Removal was inferred to result from the activity of a mixed microbial community within the biofilms capable of coupling acetate oxidation to the reduction of oxygen, nitrate and selenate. Phylogenetic analysis of the biofilm revealed a community dominated by strains of Dechloromonas sp. and Thauera sp., with isolates exhibiting genetic similarity to the latter known to reduce selenate to Se0. Enrichment cultures of selenate-respiring microorganisms were readily established using Rifle site groundwater and acetate, with cultures dominated by strains closely related to D. aromatica (96-99\% similarity). Predominance of Dechloromonas sp. in recovered biofilms and enrichments suggests this microorganism may play a role in the removal of selenium oxyanions present in Se-impacted groundwaters and sediments.</p>},
	keywords = {Acetates, Betaproteobacteria, Biodegradation, Environmental, Biofilms, Colorado, Groundwater, Humans, Microbial Consortia, Oxidation-Reduction, Oxygen, Phylogeny, RNA, Ribosomal, 16S, Selenic Acid, Selenium, Selenium Compounds, Thauera, Uranium, Water Pollutants, Chemical},
	issn = {1758-2229},
	doi = {10.1111/1758-2229.12032},
	author = {Williams, Kenneth H and Wilkins, Michael J and N{\textquoteright}Guessan, A Lucie and Arey, Bruce and Dodova, Elena and Dohnalkova, Alice and Holmes, Dawn and Lovley, Derek R and Long, Philip E}
}
@article {411,
	title = {Role of the NiFe hydrogenase Hya in oxidative stress defense in Geobacter sulfurreducens.},
	journal = {J Bacteriol},
	volume = {194},
	year = {2012},
	month = {2012 May},
	pages = {2248-53},
	abstract = {Geobacter sulfurreducens, an Fe(III)-reducing deltaproteobacterium found in anoxic subsurface environments, contains 4 NiFe hydrogenases. Hyb, a periplasmically oriented membrane-bound NiFe hydrogenase, is essential for hydrogen-dependent growth. The functions of the three other hydrogenases are unknown. We show here that the other periplasmically oriented membrane-bound NiFe hydrogenase, Hya, is necessary for growth after exposure to oxidative stress when hydrogen or a highly limiting concentration of acetate is the electron source. The beneficial impact of Hya on growth was dependent on the presence of H(2) in the atmosphere. Moreover, the Hya-deficient strain was more sensitive to the presence of superoxide or hydrogen peroxide. Hya was also required to safeguard Hyb hydrogen oxidation activity after exposure to O(2). Overexpression studies demonstrated that Hya was more resistant to oxidative stress than Hyb. Overexpression of Hya also resulted in the creation of a recombinant strain better fitted for exposure to oxidative stress than wild-type G. sulfurreducens. These results demonstrate that one of the physiological roles of the O(2)-resistant Hya is to participate in the oxidative stress defense of G. sulfurreducens.},
	keywords = {Bacterial Proteins, Gene Expression Regulation, Bacterial, Geobacter, Hydrogen Peroxide, Hydrogenase, Mutation, Oxidative Stress, Oxygen, Reactive Oxygen Species, Reverse Transcriptase Polymerase Chain Reaction, Xanthine Oxidase},
	issn = {1098-5530},
	doi = {10.1128/JB.00044-12},
	author = {Tremblay, Pier-Luc and Lovley, Derek R}
}
