# positions[].organizations[].parent[].label
College of Agriculture and Life Sciences

# overview
My research focuses on the development and use of molecular technologies to enhance the detection and remediation of environmental contamination. This includes the detection and identification of microbial pathogens from animal, human, and natural sources and also the characterization of microbial populations and communities contributing to applied remediation processes such as the bioremediation of organic and metal contaminants.

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
United States Environmental Protection Agency

# keywords[]
Picrust (phylogenetic Investigation Of Communities By Reconstruction Of Unobserved States)

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
Reverse Transcriptase Polymerase Chain Reaction

# educationAndTraining[].organization.label
University of Arizona - (Tucson, Arizona, United States)

# publications[].label
Effects of repeated glyphosate applications on soil microbial community composition and the mineralization of glyphosate.

# publications[].label
Comparison of mixed-acid fermentations inoculated with six different mixed cultures.

# publications[].label
Elevated Incidences of Antimicrobial Resistance and Multidrug Resistance in the Maumee River (Ohio, USA), a Major Tributary of Lake Erie.

# publications[].label
Effect of selected herbicides on growth and hydrocarbon content of Botryococcus braunii (Race B)

# publications[].label
Pilot-scale in situ bioremedation of uranium in a highly contaminated aquifer. 2. Reduction of u(VI) and geochemical control of u(VI) bioavailability.

# publications[].label
Differential impacts of brassicaceous and nonbrassicaceous oilseed meals on soil bacterial and fungal communities.

# publications[].label
Dynamics of Microbial Community Composition and Function during In Situ Bioremediation of a Uranium-Contaminated Aquifer (vol 77, pg 3860, 2011)

# publications[].label
Pyrene and Phenanthrene Influence on Soil Microbial Populations

# publications[].label
Impacts of Heronries on Water Quality as Evaluated through Escherichia coli and Fecal Sterol Analyses.

# publications[].label
Structure and dynamics of the microbial communities underlying the carboxylate platform for biofuel production.

# publications[].label
Microbial communities in rice rhizosphere altered by intermittent and continuous flooding in fields with long-term arsenic application

# publications[].label
Increased Antimicrobial and Multidrug Resistance Downstream of Wastewater Treatment Plants in an Urban Watershed.

# publications[].label
Inhibition of the germination and growth of Phymatotrichopsis omnivora (cotton root rot) by oilseed meals and isothiocyanates

# publications[].label
EFFECTS OF AGRICULTURAL MANAGEMENT, LAND USE, AND WATERSHED SCALE ON E-COLI CONCENTRATIONS IN RUNOFF AND STREAMFLOW

# publications[].label
Real-time PCR quantification of a green fluorescent protein-labeled, genetically engineered Pseudomonas putida strain during 2-chlorobenzoate degradation in soil.

# publications[].label
Bacterial metataxonomic profile and putative functional behavior associated with C and N cycle processes remain altered for decades after forest harvest

# publications[].label
Microarray-based analysis of microbial community RNAs by whole-community RNA amplification.

# publications[].label
Mineralisation of atrazine, metolachlor and their respective metabolites in vegetated filter strip and cultivated soil.

# publications[].label
Forest harvest intensity and soil depth alter inorganic nitrogen pool sizes and ammonia oxidizer community composition

# publications[].label
Forest organic matter removal leads to long-term reductions in bacterial and fungal abundance

# publications[].label
Detection and Characterization of Uncultivated Microorganisms Using Microarrays

# publications[].label
In situ bioreduction of uranium (VI) to submicromolar levels and reoxidation by dissolved oxygen.

# publications[].label
Nonriparian Shade as a Water Quality Best Management Practice for Grazing-Lands: A Case Study

# publications[].label
Oilseed Meal Effects on the Emergence and Survival of Crop and Weed Species

# publications[].label
Within-House Spatial Distribution of Fecal Indicator Bacteria in Poultry Litter.

# publications[].label
Plant enhancement of indigenous soil micro-organisms: a low-cost treatment of contaminated soils

# publications[].label
Arsenic speciation: HPLC followed by ICP-MS or INAA

# publications[].label
New Approaches for Bioaugmentation as a Remediation Technology

# publications[].label
Escherichia coli Concentration as a Function of Stream Order and Watershed Size.

# publications[].label
GeoChip 3.0 as a high-throughput tool for analyzing microbial community composition, structure and functional activity.

# publications[].label
GeoChip: a comprehensive microarray for investigating biogeochemical, ecological and environmental processes.

# publications[].label
Characterization of tetracycline-resistant bacteria in an urbanizing subtropical watershed.

# publications[].label
Diesel degrading bacterial endophytes with plant growth promoting potential isolated from a petroleum storage facility.

# publications[].label
Organic matter removal associated with forest harvest leads to decade scale alterations in soil fungal communities and functional guilds

# publications[].label
Vegetated treatment area (VTAs) efficiencies for E. coli and nutrient removal on small-scale swine operations

# publications[].label
Nutrient loading impacts on culturable E.coli and other heterotrophic bacteria fate in simulated stream mesocosms.

# publications[].label
The role of cell bioaugmentation and gene bioaugmentation in the remediation of co-contaminated soils.

# publications[].label
Microarray applications in microbial ecology research.

# publications[].label
Microbial communities biostimulated by ethanol during uranium (VI) bioremediation in contaminated sediment as shown by stable isotope probing

# publications[].label
Impact of enumeration method on diversity of Escherichiacoli genotypes isolated from surface water.

# publications[].label
Niche Differentiation of Arsenic-Transforming Microbial Groups in the Rice Rhizosphere Compartments as Impacted by Water Management and Soil-Arsenic Concentrations.

# publications[].label
Changes in bacterial community structure correlate with initial operating conditions of a field-scale denitrifying fluidized bed reactor.

# publications[].label
Soil bacterial and fungal communities respond differently to various isothiocyanates added for biofumigation.

# publications[].label
Effect of selected herbicides on growth and lipid content of Nannochloris oculata

# publications[].label
ASSESSMENT OF CATTLE GRAZING EFFECTS ON E. COLI RUNOFF

# publications[].label
Escherichia coli Regrowth in Disinfected Sewage Effluent: Effect of DOC and Nutrients on Regrowth in Laboratory Incubations and Urban Streams

# publications[].label
Microbial Diversity and Interactions in Natural Ecosystems

# publications[].label
Bioinformation and Omic Approaches for Characterization of Environmental Microorganisms

# publications[].label
Soil microbial population dynamics following bioaugmentation with a 3-chlorobenzoate-degrading bacterial culture. Bioaugmentation effects on soil microorganisms.

# publications[].label
Isolation and characterization of four gram-positive nickel-tolerant microorganisms from contaminated sediments.

# publications[].label
Significant association between sulfate-reducing bacteria and uranium-reducing microbial communities as revealed by a combined massively parallel sequencing-indicator species approach.

# publications[].label
Selective enrichment of a pyrene degrader population and enhanced pyrene degradation in Bermuda grass rhizosphere

# publications[].label
Fungal Community Structural and Microbial Functional Pattern Changes After Soil Amendments by Oilseed Meals of Jatropha curcas and Camelina sativa: A Microcosm Study.

# publications[].label
Impact of Indian Mustard (Brassica juncea) and Flax (Linum usitatissimum) Seed Meal Applications on Soil Carbon, Nitrogen, and Microbial Dynamics

# publications[].label
Microbial community composition and dynamics in a semi-industrial-scale facility operating under the MixAlco bioconversion platform.

# publications[].label
Whole genome sequence analysis reveals high genetic variation of newly isolated Acidithiobacillus ferrooxidans IO-2C.

# publications[].label
Soil Bacterial Community Was Changed after Brassicaceous Seed Meal Application for Suppression of Fusarium Wilt on Pepper.

# publications[].label
Comparison of 2,4-dichlorophenoxyacetic acid degradation and plasmid transfer in soil resulting from bioaugmentation with two different pJP4 donors.

# publications[].label
Mycorrhizal colonization and microbial community structure in the rhizosphere of annual ryegrass grown in pyreneamended soils

# publications[].label
Responses of microbial community functional structures to pilot-scale uranium in situ bioremediation.

# publications[].label
AGRO 161-Sustainable bioenergy crop production: Water and wind challenges

# publications[].label
Effects of field storage method on E. coli concentrations measured in storm water runoff.

# publications[].label
Detection and quantification of Geobacter lovleyi strain SZ: implications for bioremediation at tetrachloroethene- and uranium-impacted sites.

# publications[].label
Characterization of Co(III) EDTA-Reducing Bacteria in Metal- and Radionuclide-Contaminated Groundwater

# publications[].label
Dynamics of microbial community composition and function during in situ bioremediation of a uranium-contaminated aquifer.

# publications[].label
Functional establishment of introduced chlorobenzoate degraders following bioaugmentation with newly activated soil. Enhanced contaminant remediation via activated soil bioaugmentation.

# publications[].label
Microbial communities in contaminated sediments, associated with bioremediation of uranium to submicromolar levels.

# publications[].label
Hill number as a bacterial diversity measure framework with high-throughput sequence data.

# publications[].label
Impact of brassicaceous seed meals on the composition of the soil fungal community and the incidence of Fusarium wilt on chili pepper

# publications[].label
A geographical approach to tracking Escherichia coli and other water quality constituents in a Texas coastal plains watershed.

# publications[].label
Chapter 31 Global Emerging Microbial Issues in the Anthropocene Era

# publications[].label
Biodegradation of phenol and benzene by endophytic bacterial strains isolated from refinery wastewater-fed Cannabis sativa.

# publications[].label
Hurricane Harvey Impacts on Water Quality and Microbial Communities in Houston, TX Waterbodies.

# publications[].label
Design and Use of Functional Gene Microarrays (FGAs) for the Characterization of Microbial Communities

# publications[].label
Impact of poultry litter application and land use on E. coli runoff from small agricultural watersheds

# publications[].label
Effects of chlorination and ultraviolet light on environmental tetracycline-resistant bacteria and tet(W) in water

# publications[].label
Human Health Risks Associated with Recreational Waters: Preliminary Approach of Integrating Quantitative Microbial Risk Assessment with Microbial Source Tracking

# publications[].label
Evaluating the performance of carboxylate platform fermentations across diverse inocula originating as sediments from extreme environments.

# publications[].label
Nitrous Oxide Consumption Potential in a Semi-Arid Agricultural System: Effects of Conservation Soil Management and Nitrogen Timing on nosZ Mediated N2O Consumption

# publications[].label
Chlorobenzoate-degrading bacteria in similar pristine soils exhibit different community structures and population dynamics in response to anthropogenic 2-, 3-, and 4-chlorobenzoate levels.

# publications[].label
Shifts in microbial community structure along an ecological gradient of hypersaline soils and sediments.

# publications[].label
Water management impacts on arsenic speciation and iron-reducing bacteria in contrasting rice-rhizosphere compartments.

# publications[].label
Metagenomic insights into evolution of a heavy metal-contaminated groundwater microbial community.

# publications[].label
Erratum: Bacterial community succession during in situ uranium bioremediation: spatial similarities along controlled flow paths

# publications[].label
Effects of Dairy Manure Management Practices on E. coli Concentration and Diversity

# publications[].label
Mesophilic and thermophilic conditions select for unique but highly parallel microbial communities to perform carboxylate platform biomass conversion.

# publications[].label
Soil microbial community, C, N, and P responses to long-term tillage and crop rotation

# publications[].label
Grazing Effects on Bovine-Associated and Background Fecal Indicator Bacteria Levels in Edge-of-Field Runoff

# publications[].label
Elucidating the Effects of Land Cover and Usage on Background Escherichia coli Sources in Edge-of-Field Runoff

# publications[].label
Investigation of intermittent air exposure on four-stage and one-stage anaerobic semi-continuous mixed-acid fermentations.

# publications[].label
Black Box Chimera Check (B2C2): a Windows-Based Software for Batch Depletion of Chimeras from Bacterial 16S rRNA Gene Datasets.

# publications[].label
Total Grain-Arsenic and Arsenic-Species Concentrations in Diverse Rice Cultivars under Flooded Conditions

# publications[].label
ENVIRONMENTAL IMPACTS OF IN-HOUSE WINDROW COMPOSTING OF BROILER LITTER PRIOR TO LAND APPLICATION IN SUBTROPICAL/SEMI-ARID CONDITIONS

# publications[].publisher
American Society of Agricultural and Biological Engineers (ASABE)

# publications[].label
Bacterial community succession during in situ uranium bioremediation: spatial similarities along controlled flow paths.

# researcherOn[].label
Collaborative Research: RAPID: Characterization of Microbial Community Structure and Fecal Contamination of Floodwaters Generated by Hurricane Harvey

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# researcherOn[].label
Beneficial Use of Residuals to Improve Soil Health and Protect Public, and Ecosystem Health

# researcherOn[].awardedBy.label
National Institute of Food and Agriculture - (Washington D.C., District of Columbia, United States)

# streetAddress
Texas A&M University; Soil & Crop Science; 2474 TAMU

# organizations[]
College of Agriculture and Life Sciences

# schools[]
College of Agriculture and Life Sciences

# inTheNews[].label
Deadly Amoeba In Texas Water Supply Raises Concerns

# etdChairOf[].label
Pillai, Tushara Raghvan (2009-12). Variability of Grain Arsenic Concentration and Speciation in Rice (Oryza sativa L.). Doctoral Dissertation.

# etdChairOf[].label
Holgate, Leon Carl (2010-05). Irrigation Water Source: Effect on Soil Nutrient Dynamics and Microbial Community Composition. Master's Thesis.

# etdChairOf[].label
Martin, Emily C (2013-05). Bacterial Source Tracking in Impaired Watersheds:  Evaluation of Culture-Dependent and -Independent Methods for Increased Source Specificity and Improved Management. Doctoral Dissertation.

# etdChairOf[].label
Ozal, Onder (2018-05). Impact of Winter Cover Crops and Tillage on Soil Microbial Populations and Mycorrhizal Colonization in Dryland Cotton. Master's Thesis.

# etdChairOf[].label
Howard, Keya J. (2016-12). Effects of Dairy Manure Management Systems and Wastewater Disinfection Processes on E. coli Phylotype Distribution. Doctoral Dissertation.

# etdChairOf[].label
Hu, Ping (2012-07). Effects of Oilseed Meals and Isothiocyanates (ITCS) on Phymatotrichopsis omnivora (Cotton Root Rot) and Soil Microbial Communities. Doctoral Dissertation.

# etdChairOf[].label
Somenahally, Anil Kumar C. (2010-12). Impact of Two Water Management Systems on Arsenic Speciation and Microbial Populations in Rice Rhizosphere. Doctoral Dissertation.

# etdChairOf[].label
Romero, Madahy B (2014-08). Extraction, Degradation, and Microbial Respiration Effects of Mesotrione in Selected Texas Soils. Doctoral Dissertation.

# etdChairOf[].label
Rothlisberger, Katie Lynn (2012-02). Effects of Oilseed Meals on the Germination, Growth, and Survival of Crop and Weed Species. Master's Thesis.

# etdChairOf[].label
Caster, Stephen (2009-05). Environmental and Microbiological Characteristics of Managed Urban Turfgrass Systems. Master's Thesis.

# etdChairOf[].label
Kantola, Ilsa Beth (2012-07). Biogeochemistry of Woody Plant Invasion: Phosphorus Cycling and Microbial Community Composition. Doctoral Dissertation.

# etdChairOf[].label
Mushinski, Ryan Michael (2017-05). Decade-Scale Influences of Organic Matter Removal on Forest Soil Biogeochemistry and Microbial Ecology. Doctoral Dissertation.

# etdChairOf[].label
Harclerode, Cara (2009-12). A Geographical Approach to Tracking Escherichia coli and Nutrients in a Texas Coastal Plains Watershed. Master's Thesis.

# etdChairOf[].label
Sousa, Brittany Nicole (2017-02). Biological and Photocatalytic Degradation of Mycotoxins in Corn for Use in Bio-Fuel Production. Master's Thesis.

# etdChairOf[].label
Storlien, Joseph Orgean (2013-06). The Carbon Footprint of Bioenergy Sorghum Production in Central Texas: Production Implications on Greenhouse Gas Emissions, Carbon Cycling, and Life Cycle Analysis. Doctoral Dissertation.

# etdChairOf[].label
Igwe, Alexandria N (2015-09). Phytoremediation of Hydrocarbon-Contaminated Soil Using Phenolic-Exuding Horticultural Plants. Master's Thesis.

# etdChairOf[].label
Clary, Calvin Russell (2013-12). Assessing the Effectiveness of Water Quality Best Management Practices for Grazing-Lands. Master's Thesis.

# etdChairOf[].label
Ng, Justin (2012-10). Recovery of Carbon and Nitrogen Cycling and Microbial Community Functionality in a Post-Lignite Mining Rehabilitation Chronosequence in East Texas. Doctoral Dissertation.

# etdChairOf[].label
Dermody, Christopher Lee (2018-10). Uptake and Translocation of Polycyclic Aromatic Hydrocarbons by Plants in Soils. Master's Thesis.