Christopher Schadt Ph.D.

Senior Staff Scientist

Oak Ridge National Laboratory

City
Oak Ridge, Tennessee, United States
Discipline
Biological Sciences
Interests
Environmental Microbiology, Carbon Cycle Science, Soil Biogeochemistry and Envrironmental Remediation.
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About

Staff Scientist for Molecular Microbial Ecology at Oak Ridge National Laboratory. Environmental microbiologist with expertise in the influence of microorganisms (including bacteria and fungi) on biogeochemical cycles in soils and sediments, as well as the development of molecular methodologies to track these activities. Received his Ph.D in 2002 under the direction of Prof. Steven Schmidt at the University of Colorado, Boulder. Postdoctoral training was at ORNL under Dr. Jizhong Zhou. Holds a Joint Appointment as Associate Professor at the University of Tennessee in the Department of Microbiology.
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Publications

  • Combined inactivation of the Clostridium cellulolyticum lactate and malate dehydrogenase genes substantially increases ethanol yield from cellulose and switchgrass fermentations

    Li Y, Tschaplinski T, Engle N, Hamilton C, Rodriguez M, Liao J et al.

    Biotechnology for Biofuels (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Denitrifying bacteria from the genus Rhodanobacter dominate bacterial communities in the highly contaminated subsurface of a nuclear legacy waste site.

    Green S, Prakash O, Jasrotia P, Overholt W, Cardenas E, Hubbard D et al.

    Applied and environmental microbiology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microbial community succession during lactate amendment and electron acceptor limitation reveals a predominance of metal-reducing Pelosinus spp.

    Mosher J, Phelps T, Podar M, Hurt R, Campbell J, Drake M et al.

    Applied and environmental microbiology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Common bacterial responses in six ecosystems exposed to 10 years of elevated atmospheric carbon dioxide.

    Dunbar J, Eichorst S, Gallegos-Graves L, Silva S, Xie G, Hengartner N et al.

    Environmental microbiology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Draft genome sequence of Rhizobium sp. strain PDO1-076, a bacterium isolated from Populus deltoides.

    Brown S, Klingeman D, Lu T, Johnson C, Utturkar S, Land M et al.

    Journal of bacteriology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Pseudomonas fluorescens induces strain-dependent and strain-independent host plant responses in defense networks, primary metabolism, photosynthesis, and fitness.

    Weston D, Pelletier D, Morrell-Falvey J, Tschaplinski T, Jawdy S, Lu T et al.

    Molecular plant-microbe interactions : MPMI (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Firing range soils yield a diverse array of fungal isolates capable of organic acid production and Pb mineral solubilization.

    Sullivan T, Gottel N, Basta N, Jardine P, Schadt C

    Applied and environmental microbiology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Development and validation of a citrate synthase directed quantitative PCR marker for soil bacterial communities

    Castro H, Classen A, Austin E, Crawford K, Schadt C

    Applied Soil Ecology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Twenty-one genome sequences from Pseudomonas species and 19 genome sequences from diverse bacteria isolated from the rhizosphere and endosphere of Populus deltoides.

    Brown S, Utturkar S, Klingeman D, Johnson C, Martin S, Land M et al.

    Journal of bacteriology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Response of the soil microbial community to changes in precipitation in a semiarid ecosystem.

    Cregger M, Schadt C, McDowell N, Pockman W, Classen A

    Applied and environmental microbiology (2012)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • New North American truffles (Tuber spp.) and their ectomycorrhizal associations.

    Guevara G, Bonito G, Trappe J, Cázares E, Williams G, Healy R et al.

    Mycologia (2013)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • PLANT GROWTH PROMOTING RHIZOBACTERIUM-US20140206539.pdf

    Doktycz M, Pelletier D, Schadt C, Tuskan G, Weston D

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • U(VI) bioreduction with emulsified vegetable oil as the electron donor--microcosm tests and model development.

    Tang G, Wu W, Watson D, Parker J, Schadt C, Shi X et al.

    Environmental science & technology (2013)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • U(VI) bioreduction with emulsified vegetable oil as the electron donor--model application to a field test.

    Tang G, Watson D, Wu W, Schadt C, Parker J, Brooks S

    Environmental science & technology (2013)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Variation in root architecture among switchgrass cultivars impacts root decomposition rates

    Graaff M, Six J, Jastrow J, Schadt C, Wullschleger S

    Soil Biology and Biochemistry (2013)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Comparative metagenomic and rRNA microbial diversity characterization using archaeal and bacterial synthetic communities.

    Shakya M, Quince C, Campbell J, Yang Z, Schadt C, Podar M

    Environmental microbiology (2013)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • In situ bioremediation of uranium with emulsified vegetable oil as the electron donor.

    Watson D, Wu W, Mehlhorn T, Tang G, Earles J, Lowe K et al.

    Environmental science & technology (2013)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • A multifactor analysis of fungal and bacterial community structure in the root microbiome of mature Populus deltoides trees.

    Shakya M, Gottel N, Castro H, Yang Z, Gunter L, Labbé J et al.

    PloS one (2013)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Representation of dormant and active microbial dynamics for ecosystem modeling.

    Wang G, Mayes M, Gu L, Schadt C

    PloS one (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Watershed-scale fungal community characterization along a pH gradient in a subsurface environment cocontaminated with uranium and nitrate.

    Jasrotia P, Green S, Canion A, Overholt W, Prakash O, Wafula D et al.

    Applied and environmental microbiology (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Organic matter transformation in the peat column at Marcell Experimental Forest: Humification and vertical stratification

    Tfaily M, Cooper W, Kostka J, Chanton P, Schadt C, Hanson P et al.

    Journal of Geophysical Research: Biogeosciences (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microbial community stratification linked to utilization of carbohydrates and phosphorus limitation in a boreal peatland at Marcell Experimental Forest, Minnesota, USA.

    Lin X, Tfaily M, Steinweg J, Chanton P, Esson K, Yang Z et al.

    Applied and environmental microbiology (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microbial metabolic potential for carbon degradation and nutrient (nitrogen and phosphorus) acquisition in an ombrotrophic peatland.

    Lin X, Tfaily M, Green S, Steinweg J, Chanton P, Imvittaya A et al.

    Applied and environmental microbiology (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Plant host and soil origin influence fungal and bacterial assemblages in the roots of woody plants.

    Bonito G, Reynolds H, Robeson M, Nelson J, Hodkinson B, Tuskan G et al.

    Molecular ecology (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microbial dormancy improves development and experimental validation of ecosystem model.

    Wang G, Jagadamma S, Mayes M, Schadt C, Megan Steinweg J, Gu L et al.

    The ISME journal (2015)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Evaluation and validation of de novo and hybrid assembly techniques to derive high-quality genome sequences.

    Utturkar S, Klingeman D, Land M, Schadt C, Doktycz M, Pelletier D et al.

    Bioinformatics (Oxford, England) (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Towards a holistic understanding of the beneficial interactions across the Populus microbiome

    Hacquard S, Schadt C

    New Phytologist (2014)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • The effects of chronic nitrogen fertilization on alpine tundra soil microbial communities: implications for carbon and nitrogen cycling.

    Nemergut D, Townsend A, Sattin S, Freeman K, Fierer N, Neff J et al.

    Environmental Microbiology (2008)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Changes in bacterial community structure correlate with initial operating conditions of a field-scale denitrifying fluidized bed reactor.

    Hwang C, Wu W, Gentry T, Carley J, Carroll S, Schadt C et al.

    Applied Microbiology and Biotechnology (2006)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Intra-annual changes in biomass, carbon, and nitrogen dynamics at 4-year old switchgrass field trials in west Tennessee, USA☆

    Garten Jr. C, Smith J, Tyler D, Amonette J, Bailey V, Brice D et al.

    Agriculture, Ecosystems & Environment (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Sequencing of multiple clostridial genomes related to biomass conversion and biofuel production.

    Hemme C, Mouttaki H, Lee Y, Zhang G, Goodwin L, Lucas S et al.

    Journal of bacteriology (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Kinetic analysis and modeling of oleate and ethanol stimulated uranium (VI) bio-reduction in contaminated sediments under sulfate reduction conditions.

    Zhang F, Wu W, Parker J, Mehlhorn T, Kelly S, Kemner K et al.

    Journal of hazardous materials (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Responses of soil cellulolytic fungal communities to elevated atmospheric CO(2) are complex and variable across five ecosystems.

    Weber C, Zak D, Hungate B, Jackson R, Vilgalys R, Evans R et al.

    Environmental microbiology (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Functional gene array-based analysis of microbial community structure in groundwaters with a gradient of contaminant levels.

    Waldron P, Wu L, Van Nostrand J, Schadt C, He Z, Watson D et al.

    Environmental science & technology (2009)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Fruit and soil quality of organic and conventional strawberry agroecosystems.

    Reganold J, Andrews P, Reeve J, Carpenter-Boggs L, Schadt C, Alldredge J et al.

    PloS one (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Effects of soil type and farm management on soil ecological functional genes and microbial activities.

    Reeve J, Schadt C, Carpenter-Boggs L, Kang S, Zhou J, Reganold J

    The ISME journal (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • 11 Design and Use of Functional Gene Microarrays ( FGAs ) for the Characterization of Microbial Communities

    Schadt C, Liebich J, Chong S, Gentry T

    Methods (2004)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Establishment and metabolic analysis of a model microbial community for understanding trophic and electron accepting interactions of subsurface anaerobic environments.

    Miller L, Mosher J, Venkateswaran A, Yang Z, Palumbo A, Phelps T et al.

    BMC microbiology (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Photoautotrophic symbiont and geography are major factors affecting highly structured and diverse bacterial communities in the lichen microbiome.

    Hodkinson B, Gottel N, Schadt C, Lutzoni F

    Environmental microbiology (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Structural and functional diversity of soil bacterial and fungal communities following woody plant encroachment in the southern Great Plains

    Hollister E, Schadt C, Palumbo A, James Ansley R, Boutton T

    Soil Biology and Biochemistry (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Populus deltoides roots harbor distinct microbial communities within the endosphere and rhizosphere across contrasting soil types.

    Gottel N, Castro H, Kerley M, Yang Z, Pelletier D, Podar M et al.

    Applied and environmental microbiology (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Sulfate-Reducing Bacterium Desulfovibrio desulfuricans ND132 as a Model for Understanding Bacterial Mercury Methylation.

    Gilmour C, Elias D, Kucken A, Brown S, Palumbo A, Schadt C et al.

    Applied and environmental microbiology (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Massively parallel rRNA gene sequencing exacerbates the potential for biased community diversity comparisons due to variable library sizes

    Gihring T, Green S, Schadt C

    Environmental Microbiology (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • A limited microbial consortium is responsible for extended bioreduction of uranium in a contaminated aquifer.

    Gihring T, Zhang G, Brandt C, Brooks S, Campbell J, Carroll S et al.

    Applied and environmental microbiology (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Elevated CO2 and plant species diversity interact to slow root decomposition

    de Graaff M, Schadt C, Rula K, Six J, Schweitzer J, Classen A

    Soil Biology and Biochemistry (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Labile soil carbon inputs mediate the soil microbial community composition and plant residue decomposition rates.

    de Graaff M, Classen A, Castro H, Schadt C

    The New phytologist (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Response of “Alamo” switchgrass tissue chemistry and biomass to nitrogen fertilization in West Tennessee, USA

    Garten C, Brice D, Castro H, Graham R, Mayes M, Phillips J et al.

    Agriculture, Ecosystems & Environment (2011)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Soil Microbial Community Responses to Multiple Experimental Climate Change Drivers

    Castro H, Classen A, Austin E, Norby R, Schadt C

    Applied and Environmental Microbiology (2010)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • in Microarray-Based Technologies 9 Advances for Soil Microbial Community Analyses

    SCHADT C, Zhou J

    Soil Biology (2008)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Changes in bacterial community structure correlate with initial operating conditions of a field-scale denitrifying fluidized bed reactor

    Hwang C, Wu W, Gentry T, Carley J, Carroll S, Schadt C et al.

    Applied Microbiology and Biotechnology (2006)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Geochip: a comprehensive microarray for investigating biogeochemical, ecological and environmental processes

    He Z, Gentry T, SCHADT C, Wu L, Liebich J, Chong S et al.

    The ISME Journal (2007)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Assessment of 10 years of co2 fumigation on soil microbial communities and function in a sweetgum plantation

    Austin E, Castro H, Sides K, Schadt C, Classen A

    Soil Biology and Biochemistry (2009)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microbial Diversity and Bioremediation of a Hydrocarbon-Contaminated Aquifer (Vega Baja, Puerto Rico)

    Rodríguez-Martínez E, Pérez E, Schadt C, Zhou J, Massol-Deyá A

    International Journal of Environmental Research and Public Health (2006)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Fungal genome sequencing and bioenergy

    BAKER S, THYKAER J, ADNEY W, BRETTIN T, BROCKMAN F, MARTINEZ D et al.

    Fungal Biology Reviews (2008)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Isolation and phylogenetic identification of a dark-septate endophyte associated with the alpine plant Ranunculus adoneus

    Schadt C, Mullen R, Schmidt S

    New Phytologist (2001)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Improvement of Oligonucleotide Probe Design Criteria for Functional Gene Microarrays in Environmental Applications

    Liebich J, Schadt C, Chong S, He Z, Rhee S, Zhou J

    Applied and Environmental Microbiology (2006)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Seasonal Dynamics of Previously Unknown Fungal Lineages in Tundra Soils

    Schadt C, Martin A, Lipson D, Schmidt S

    Science (2003)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Ectomycorrhizal transfer of amino acid nitrogen to the alpine sedge Kobresia myosuroides

    Lipson D, Schadt C, Schmidt S, Monson R

    New Phytologist (1999)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microarray-Based analysis of subnanogram quantities of microbial community dnas by using whole-Community genome amplification

    Wu L, Liu X, Schadt C, Zhou J

    Applied and Environmental Microbiology (2006)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Widespread occurrence and phylogenetic placement of a soil clone group adds a prominent new branch to the fungal tree of life

    Porter T, Schadt C, Rizvi L, Martin A, Schmidt S, Scottdenton L et al.

    Molecular Phylogenetics and Evolution (2008)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Molecular and Metabolic Characterization of Cold-Tolerant Alpine Soil Psuedomonas Sensu Stricto

    Meyer A, Lipson D, Martin A, Schadt C, Schmidt S

    Applied and Environmental Microbiology (2004)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Changes in soil microbial community structure and function in an alpine dry meadow following spring snow melt

    Lipson D, Schadt C, Schmidt S

    Microbial Ecology (2002)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Variability in soil properties at different spatial scales (1m–1km) in a deciduous forest ecosystem☆

    Garten Jr. C, Kang S, Brice D, Schadt C, Zhou J

    Soil Biology and Biochemistry (2007)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Donor-dependent Extent of Uranium Reduction for Bioremediation of Contaminated Sediment Microcosms

    Madden A, Palumbo A, Ravel B, Vishnivetskaya T, Phelps T, Schadt C et al.

    Journal of Environmental Quality (2009)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microarray-Based Analysis of Microbial Community RNAs by Whole-Community RNA Amplification

    Gao H, Yang Z, Gentry T, Wu L, Schadt C, Zhou J

    Applied and Environmental Microbiology (2006)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Mycorrhizal and Dark-Septate Fungi in Plant Roots above 4270 Meters Elevation in the Andes and Rocky Mountains

    Schmidt S, Sobieniak L, Kageyama S, Halloy S, Schadt C

    Arctic Antarctic and Alpine Research (2008)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Microarray Applications in Microbial Ecology Research

    Gentry T, Wickham G, Schadt C, He Z, Zhou J

    Microbial Ecology (2006)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.
  • Spatial scaling of functional gene diversity across various microbial taxa

    Zhou J, Kang S, Schadt C, Garten Jr. C

    Proceedings of the National Academy of Sciences (2008)

    • -- Readers Readers not available. This publication is not currently accessible in the Mendeley catalog.

Professional experience

Senior Staff Scientist

Oak Ridge National Laboratory

January 2012 - Present

Associate Professor (Joint Appointment)

University of Tennessee

June 2011 - Present

Staff Scientist

Oak Ridge National Laboratory

January 2007 - January 2012 (5 years)

Adjunct Professor

University of Tennessee

January 2007 - June 2010 (3 years 5 months)

Associate Staff Scientist

Oak Ridge National Laboratory

January 2005 - December 2006 (1 year 11 months)

Postdoctoral Associate

Oak Ridge National Laboratory

March 2003 - December 2004 (1 year 9 months)

Postdoctoral Associate

University of Colorado

May 2002 - February 2003 (9 months)

Education history

University of Colorado

Ph. D.

September 1996 - May 2002 (5 years 8 months)

University of Washington

B.S.

September 1991 - March 1996 (4 years 6 months)