Research Topics
Genomes and GenesSpecies | Dawn E HolmesSummaryAffiliation: University of Massachusetts Country: USA Publications
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Publications
The genome of Geobacter bemidjiensis, exemplar for the subsurface clade of Geobacter species that predominate in Fe(III)-reducing subsurface environmentsMuktak Aklujkar
University of Massachusetts Amherst, Amherst, MA 01003, USA
BMC Genomics 11:490. 2010..This study examines whether there are significant differences in the metabolism and physiology of G. bemidjiensis compared to non-subsurface Geobacter species...
Potential for quantifying expression of the Geobacteraceae citrate synthase gene to assess the activity of Geobacteraceae in the subsurface and on current-harvesting electrodesDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Appl Environ Microbiol 71:6870-7. 2005..These results suggest that it is possible to monitor the in situ metabolic rate of Geobacteraceae by tracking the expression of the citrate synthase gene...
Prolixibacter bellariivorans gen. nov., sp. nov., a sugar-fermenting, psychrotolerant anaerobe of the phylum Bacteroidetes, isolated from a marine-sediment fuel cellDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Int J Syst Evol Microbiol 57:701-7. 2007..nov., sp. nov. is proposed. The type strain is F2(T) (=ATCC BAA-1284(T)=JCM 13498(T))...
Subsurface clade of Geobacteraceae that predominates in a diversity of Fe(III)-reducing subsurface environmentsDawn E Holmes
Department of Microbiology, Morrill IV North Science Center, University of Massachusetts, Amherst, MA, USA
ISME J 1:663-77. 2007..These results suggest that further study of Geobacter species in the subsurface clade is necessary to accurately model the behavior of Geobacter species during subsurface bioremediation of metal and organic contaminants...
In situ expression of nifD in Geobacteraceae in subsurface sedimentsDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Appl Environ Microbiol 70:7251-9. 2004....
Microarray and genetic analysis of electron transfer to electrodes in Geobacter sulfurreducensDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Environ Microbiol 8:1805-15. 2006..This has important implications for the design of electrode materials and the genetic engineering of microorganisms to improve the function of microbial fuel cells...
Genes for two multicopper proteins required for Fe(III) oxide reduction in Geobacter sulfurreducens have different expression patterns both in the subsurface and on energy-harvesting electrodesDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Microbiology 154:1422-35. 2008..Furthermore, comparison of differential expression of ompB and ompC may provide insight into the in situ metabolic state of Geobacter species in environments of interest...
Anaerobic oxidation of benzene by the hyperthermophilic archaeon Ferroglobus placidusDawn E Holmes
Department of Microbiology, 203N Morrill Science Center IVN, University of Massachusetts Amherst, Amherst, MA 01003, USA
Appl Environ Microbiol 77:5926-33. 2011..Thus, F. placidus provides a much-needed pure culture model for further studies on the anaerobic activation of benzene in microorganisms...
Genome-scale analysis of anaerobic benzoate and phenol metabolism in the hyperthermophilic archaeon Ferroglobus placidusDawn E Holmes
Department of Microbiology, University of Massachusetts Amherst, Amherst, MA, USA
ISME J 6:146-57. 2012....
Transcriptome of Geobacter uraniireducens growing in uranium-contaminated subsurface sedimentsDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
ISME J 3:216-30. 2009....
Expression of acetate permease-like (apl ) genes in subsurface communities of Geobacter species under fluctuating acetate concentrationsHila Elifantz
Department of Microbiology, University of Massachusetts, Amherst, MA, USA
FEMS Microbiol Ecol 73:441-9. 2010....
Gene transcript analysis of assimilatory iron limitation in Geobacteraceae during groundwater bioremediationRegina A O'Neil
Department of Microbiology, 203 N Morrill Science Center IVN, University of Massachusetts at Amherst, Amherst, MA 01003, USA
Environ Microbiol 10:1218-30. 2008..These results demonstrate the ability of transcript analysis to reveal previously unsuspected aspects of the in situ physiology of microorganisms in subsurface environments...
Geobacter bemidjiensis sp. nov. and Geobacter psychrophilus sp. nov., two novel Fe(III)-reducing subsurface isolatesKelly P Nevin
Department of Microbiology, University of Massachusetts Amherst, MA 01003, USA
Int J Syst Evol Microbiol 55:1667-74. 2005..nov. (type strain Bem(T)=ATCC BAA-1014(T)=DSM 16622(T)=JCM 12645(T)) and Geobacter psychrophilus sp. nov. (strains P11, P35(T) and P39; type strain P35(T)=ATCC BAA-1013(T)=DSM 16674(T)=JCM 12644(T)) are proposed...
Geobacter pickeringii sp. nov., Geobacter argillaceus sp. nov. and Pelosinus fermentans gen. nov., sp. nov., isolated from subsurface kaolin lensesEvgenya S Shelobolina
Department of Microbiology, University of Massachusetts, Morrill Science Center IVN, Amherst, MA 01003, USA
Int J Syst Evol Microbiol 57:126-35. 2007..nov., sp. nov. (type strain R7(T)=DSM 17108(T)=ATCC BAA-1133(T)), in the Sporomusa-Pectinatus-Selenomonas group...
Geoglobus ahangari gen. nov., sp. nov., a novel hyperthermophilic archaeon capable of oxidizing organic acids and growing autotrophically on hydrogen with Fe(III) serving as the sole electron acceptorKazem Kashefi
Department of Microbiology, University of Massachusetts, Amherst 01003, USA
Int J Syst Evol Microbiol 52:719-28. 2002..The name proposed for strain 234T is Geoglobus ahangari gen. nov., sp. nov....
Quantifying expression of Geobacter spp. oxidative stress genes in pure culture and during in situ uranium bioremediationPaula J Mouser
Department of Microbiology, University of Massachusetts, Amherst, MA, USA
ISME J 3:454-65. 2009....
Thermophily in the Geobacteraceae: Geothermobacter ehrlichii gen. nov., sp. nov., a novel thermophilic member of the Geobacteraceae from the "Bag City" hydrothermal ventKazem Kashefi
Department of Microbiology, University of Massachusetts, 203 Morrill Science Center IVN, Amherst, MA 01003, USA
Appl Environ Microbiol 69:2985-93. 2003....
Potential role of a novel psychrotolerant member of the family Geobacteraceae, Geopsychrobacter electrodiphilus gen. nov., sp. nov., in electricity production by a marine sediment fuel cellDawn E Holmes
Department of Microbiology, 106N Morrill IV N, University of Massachusetts, Amherst, MA 01003, USA
Appl Environ Microbiol 70:6023-30. 2004..Thus, they may serve as important model organisms for further elucidation of the mechanisms of microbe-electrode electron transfer in sediment fuel cells...
Influence of heterogeneous ammonium availability on bacterial community structure and the expression of nitrogen fixation and ammonium transporter genes during in situ bioremediation of uranium-contaminated groundwaterPaula J Mouser
Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003, USA
Environ Sci Technol 43:4386-92. 2009..This study also emphasizes the need for more detailed analysis of geochemical and physiological interactions at the field scale in order to adequately model subsurface microbial processes during bioremediation...
Comparison of 16S rRNA, nifD, recA, gyrB, rpoB and fusA genes within the family Geobacteraceae fam. novDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Int J Syst Evol Microbiol 54:1591-9. 2004....
Highly conserved genes in Geobacter species with expression patterns indicative of acetate limitationCarla Risso
Department of Microbiology, 203N Morrill Science Center IVN, University of Massachusetts Amherst, Amherst, MA 01003, USA
Microbiology 154:2589-99. 2008..Monitoring the expression of these genes could aid in the design of strategies for acetate-mediated in situ bioremediation of uranium-contaminated groundwater...
Reclassification of Trichlorobacter thiogenes as Geobacter thiogenes comb. novKelly P Nevin
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Int J Syst Evol Microbiol 57:463-6. 2007..Based on extensive phylogenetic evidence and the fact that T. thiogenes has the hallmark physiological characteristics of a Geobacter species, Trichlorobacter thiogenes should be reclassified as a member of the genus Geobacter...
Electrode-reducing microorganisms that harvest energy from marine sedimentsDaniel R Bond
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Science 295:483-5. 2002..This finding not only provides a method for extracting energy from organic matter, but also suggests a strategy for promoting the bioremediation of organic contaminants in subsurface environments...
Dissimilatory Fe(III) and Mn(IV) reductionDerek R Lovley
Department of Microbiology, University of Massachusetts Amherst, Amherst, MA 01003, USA
Adv Microb Physiol 49:219-86. 2004..In comparison with other respiratory processes, the study of Fe(III) and Mn(IV) reduction is in its infancy, but genome-enabled approaches are rapidly advancing our understanding of this environmentally significant physiology...
Electron transfer by Desulfobulbus propionicus to Fe(III) and graphite electrodesDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003, USA
Appl Environ Microbiol 70:1234-7. 2004....
c-Type cytochromes in Pelobacter carbinolicusShelley A Haveman
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Appl Environ Microbiol 72:6980-5. 2006..sulfurreducens were not present in the P. carbinolicus genome. These results suggest that further evaluation of the functions of c-type cytochromes in the Geobacteraceae is warranted...
Use of Fe(III) as an electron acceptor to recover previously uncultured hyperthermophiles: isolation and characterization of Geothermobacterium ferrireducens gen. nov., sp. novKazem Kashefi
Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003, USA
Appl Environ Microbiol 68:1735-42. 2002..Based on both its 16S rDNA sequence and physiological characteristics, strain FW-1a represents a new genus among the Bacteria. The name Geothermobacterium ferrireducens gen. nov., sp. nov., is proposed (ATCC BAA-426)...
Characterization and transcription of arsenic respiration and resistance genes during in situ uranium bioremediationLudovic Giloteaux
Department of Microbiology, University of Massachusetts, Amherst, MA, USA
ISME J 7:370-83. 2013..The transcriptomic approach developed here should be useful for the study of a diversity of other environments in which Geobacter species are considered to have an important influence on arsenic biogeochemistry...
Enrichment of members of the family Geobacteraceae associated with stimulation of dissimilatory metal reduction in uranium-contaminated aquifer sedimentsDawn E Holmes
Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003, USA
Appl Environ Microbiol 68:2300-6. 2002....
Geobacter: the microbe electric's physiology, ecology, and practical applicationsDerek R Lovley
Department of Microbiology and Environmental Biotechnology Center, University of Massachusetts, Amherst, Massachusetts, USA
Adv Microb Physiol 59:1-100. 2011..Further investigation of these environmentally relevant and physiologically unique organisms is warranted...
Harnessing microbially generated power on the seafloorLeonard M Tender
Center for Bio Molecular Science and Engineering, Naval Research Laboratory, Code 6900, 4555 Overlook Avenue, SW, Washington, DC 20375, USA
Nat Biotechnol 20:821-5. 2002..These results demonstrate in real marine environments a new form of power generation that uses an immense, renewable energy reservoir (sedimentary organic carbon) and has near-immediate application...
