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Title: Fluctuations in Species-Level Protein Expression Occur during Element and Nutrient Cycling in the Subsurface

Journal Article · · PLoS One, 8(3):e57819

While microbial activities in environmental systems play a key role in the utilization and cycling of essential elements and compounds, microbial activity and growth frequently fluctuates in response to environmental stimuli and perturbations. To investigate these fluctuations within a saturated aquifer system, we monitored a carbon-stimulated in situ Geobacter population while iron reduction was occurring, using 16S rRNA abundances and high-resolution tandem mass spectrometry proteome measurements. Following carbon amendment, 16S rRNA analysis of temporally separated samples revealed the rapid enrichment of Geobacter-like environmental strains with strong similarity to G. bemidjiensis. Tandem mass spectrometry proteomics measurements suggest high carbon flux through Geobacter respiratory pathways, and the synthesis of anapleurotic four carbon compounds from acetyl-CoA via pyruvate ferredoxin oxidoreductase activity. Across a 40-day period where Fe(III) reduction was occurring, fluctuations in protein expression reflected changes in anabolic versus catabolic reactions, with increased levels of biosynthesis occurring soon after acetate arrival in the aquifer. In addition, localized shifts in nutrient limitation were inferred based on expression of nitrogenase enzymes and phosphate uptake proteins. These temporal data offer the first example of differing microbial protein expression associated with changing geochemical conditions in a subsurface environment.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1076700
Report Number(s):
PNNL-SA-91270; 830403000
Journal Information:
PLoS One, 8(3):e57819, Journal Name: PLoS One, 8(3):e57819
Country of Publication:
United States
Language:
English

References (38)

Stimulating the In Situ Activity of Geobacter Species To Remove Uranium from the Groundwater of a Uranium-Contaminated Aquifer journal October 2003
Molecular analysis of phosphate limitation in Geobacteraceae during the bioremediation of a uranium-contaminated aquifer journal December 2009
Investigating different mechanisms for biogenic selenite transformations: Geobacter sulfurreducens , Shewanella oneidensis and Veillonella atypica journal November 2009
Role of the NiFe Hydrogenase Hya in Oxidative Stress Defense in Geobacter sulfurreducens journal February 2012
Microbial reduction of uranium journal April 1991
Vanadium Respiration by Geobacter metallireducens: Novel Strategy for In Situ Removal of Vanadium from Groundwater journal May 2004
The hydrogenases of Geobacter sulfurreducens: a comparative genomic perspective journal April 2005
Chemically Etched Open Tubular and Monolithic Emitters for Nanoelectrospray Ionization Mass Spectrometry journal November 2006
MUSCLE: multiple sequence alignment with high accuracy and high throughput journal March 2004
Proteome of Geobacter sulfurreducens grown with Fe(III) oxide or Fe(III) citrate as the electron acceptor journal December 2008
N2-dependent growth and nitrogenase activity in the metal-metabolizing bacteria, Geobacter and Magnetospirillum species journal June 2000
How Geobacteraceae may dominate subsurface biodegradation: physiology of Geobacter metallireducens in slow-growth habitat-simulating retentostats journal September 2009
Geochemical, mineralogical and microbiological characteristics of sediment from a naturally reduced zone in a uranium-contaminated aquifer journal August 2012
Interactive Tree Of Life v2: online annotation and display of phylogenetic trees made easy journal April 2011
Flux Analysis of Central Metabolic Pathways in Geobacter metallireducens during Reduction of Soluble Fe(III)-Nitrilotriacetic Acid journal April 2007
Determination of In Situ Bacterial Growth Rates in Aquifers and Aquifer Sediments journal July 2003
Proteogenomic Monitoring of Geobacter Physiology during Stimulated Uranium Bioremediation journal August 2009
Correction: Computational and Experimental Analysis of Redundancy in the Central Metabolism of Geobacter sulfurreducens journal March 2008
Novel Mode of Microbial Energy Metabolism: Organic Carbon Oxidation Coupled to Dissimilatory Reduction of Iron or Manganese journal January 1988
Subsurface clade of Geobacteraceae that predominates in a diversity of Fe(III)-reducing subsurface environments journal October 2007
Ecology, Microbial book January 2009
Potential for Bioremediation of Uranium-Contaminated Aquifers with Microbial U(VI) Reduction journal May 2002
In situ to in silico and back: elucidating the physiology and ecology of Geobacter spp. using genome-scale modelling journal December 2010
Microbiological and Geochemical Heterogeneity in an In Situ Uranium Bioremediation Field Site journal October 2005
Development of a biomarker for Geobacter activity and strain composition; Proteogenomic analysis of the citrate synthase protein during bioremediation of U(VI): Geobacter citrate synthase biomarker journal December 2010
Acetate Availability and its Influence on Sustainable Bioremediation of Uranium-Contaminated Groundwater journal June 2011
Short-Read Assembly of Full-Length 16S Amplicons Reveals Bacterial Diversity in Subsurface Sediments journal February 2013
Universal sample preparation method for proteome analysis journal April 2009
Comparative Bacterial Proteomics: Analysis of the Core Genome Concept journal February 2008
Integrative analysis of the interactions between Geobacter spp. and sulfate-reducing bacteria during uranium bioremediation journal January 2011
MEGA5: Molecular Evolutionary Genetics Analysis Using Maximum Likelihood, Evolutionary Distance, and Maximum Parsimony Methods journal May 2011
Timing the Onset of Sulfate Reduction over Multiple Subsurface Acetate Amendments by Measurement and Modeling of Sulfur Isotope Fractionation journal August 2012
Implications of Strain- and Species-Level Sequence Divergence for Community and Isolate Shotgun Proteomic Analysis journal August 2007
Transcriptome of Geobacter uraniireducens growing in uranium-contaminated subsurface sediments journal October 2008
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 Groundwater journal June 2009
Spectral Probabilities and Generating Functions of Tandem Mass Spectra: A Strike against Decoy Databases journal August 2008
Ecology, Microbial ☆ book January 2019
Molecular Analysis of the In Situ Growth Rates of Subsurface Geobacter Species journal December 2012

Cited By (7)

Thousands of microbial genomes shed light on interconnected biogeochemical processes in an aquifer system journal October 2016
After All, Only Millions? journal July 2016
Environmental Microbial Community Proteomics: Status, Challenges and Perspectives journal August 2016
Global transcriptional analysis of Geobacter sulfurreducens under palladium reducing conditions reveals new key cytochromes involved journal March 2020
Metabolic interdependencies between phylogenetically novel fermenters and respiratory organisms in an unconfined aquifer journal March 2014
Global transcriptional analysis of Geobacter sulfurreducens under palladium reducing conditions reveals new key cytochromes involved journal May 2018
Reactive transport of uranium in a groundwater bioreduction study: Insights from high-temporal resolution 238U/235U data journal August 2016

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