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- Stewart, Philip S., et al. Show all 4 Authors
- Environmental Science & Technology 2015 v.49 no.1 pp. 16-32
- bacteria; biocides; byproducts; corrosion; disinfection; ecosystems; energy; environmental assessment; equipment; glutaraldehyde; human health; hydrogen sulfide; organic matter; quaternary ammonium compounds; risk assessment; shale; soil; temperature; toxicity
- ... Biocides are critical components of hydraulic fracturing (“fracking”) fluids used for unconventional shale gas development. Bacteria may cause bioclogging and inhibit gas extraction, produce toxic hydrogen sulfide, and induce corrosion leading to downhole equipment failure. The use of biocides such as glutaraldehyde and quaternary ammonium compounds has spurred a public concern and debate among re ...
- Stewart, Philip S., et al. Show all 7 Authors
- Journal of bacteriology 2012 v.194 no.8 pp. 2062-2073
- Pseudomonas aeruginosa; bacteria; biofilm; ciprofloxacin; environmental factors; essential genes; gene expression; green fluorescent protein; hypoxia; messenger RNA; microarray technology; propidium; ribosomal RNA; ribosomal proteins; ribosomes; stress response; tobramycin; transcriptome
- ... Bacteria growing in biofilms are physiologically heterogeneous, due in part to their adaptation to local environmental conditions. Here, we characterized the local transcriptome responses of Pseudomonas aeruginosa growing in biofilms by using a microarray analysis of isolated biofilm subpopulations. The results demonstrated that cells at the top of the biofilms had high mRNA abundances for genes i ...
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- Stewart, Philip S., et al. Show all 9 Authors
- Proceedings of the National Academy of Sciences of the United States of America 2013 v.110 no.7 pp. 2629-2634
- Citrobacter koseri; Salmonella Typhimurium; bacteria; biofilm; cell differentiation; cellulose; ferric chloride; hydrogen peroxide; intestinal microorganisms; iron; operon; oxidative stress; oxygen; superoxide dismutase; toxicity; uropathogenic Escherichia coli
- ... Bacterial biofilm formation is a complex developmental process involving cellular differentiation and the formation of intricate 3D structures. Here we demonstrate that exposure to ferric chloride triggers rugose biofilm formation by the uropathogenic Escherichia coli strain UTI89 and by enteric bacteria Citrobacter koseri and Salmonella enterica serovar typhimurium . Two unique and separable cell ...
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