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You searched for: Author "Bryan J. Cottrell" Remove constraint Author: "Bryan J. Cottrell"
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1. Stx1 prophage excision in Escherichia coli strain PA20 confers strong curli and biofilm formation by restoring native m1ra

Author:
Bryan J. Cottrell,   et al.   ; Gaylen A. Uhlich; Chin-Yi Chen; Christopher S. Hofmann; Xianghe Yan; Ly Nguyen;     Show all 6 Authors
Source:
FEMS Microbiology Letters 2016 v.363 no.13 pp. 1-8
ISSN:
0378-1097
Subject:
Escherichia coli O157; biofilm; fimbriae; lysogeny; mutation; phenotype; regulator genes; transcriptomics
Abstract:
... Prophage insertions in Escherichia coli O157:H7 mlrA contribute to the low expression of curli fimbriae and biofilm observed in many clinical isolates. Varying levels of CsgD-dependent curli/biofilm expression are restored to strains bearing prophage insertions in mlrA by mutation of regulatory genes affecting csgD . Our previous study identified strong biofilm- and curli-producing variants in O15 ...
Handle:
10113/5852150
DOI:
10.1093/femsle/fnw123

2. Growth media and temperature effects on biofilm formation by serotype O157:H7 and non-O157 Shiga toxin-producing Escherichia coli

Author:
Bryan J. Cottrell,   et al.   ; Gaylen A. Uhlich; Chin-Yi Chen; Ly-Huong Nguyen;     Show all 4 Authors
Source:
FEMS Microbiology Letters 2014 v.354 no.2 pp. 133-141
ISSN:
0378-1097
Subject:
Escherichia coli O157; agar; biofilm; cellulose; culture media; dyes; fimbriae; genes; microbial growth; phenotype; serotypes; temperature; virulent strains
Abstract:
... Biofilm formation in most Escherichia coli strains is dependent on curli fimbriae and cellulose, and the production of both varies widely among pathogenic strains. Curli and cellulose production by colonies growing on agar are often identified by their affinity for Congo red dye (CR). However, media composition and incubation temperature can affect dye affinity and impose limitations on red phenot ...
Handle:
10113/59637
DOI:
10.1111/1574-6968.12439
PubMed:
24702283

3. Phenotypic and Genotypic Characterization of Biofilm Forming Capabilities in Non-O157 Shiga Toxin-Producing Escherichia coli Strains

Author:
Bryan J. Cottrell,   et al.   ; Chin-Yi Chen; Christopher S. Hofmann; Terence P. Strobaugh Jr; George C. Paoli; Ly-Huong Nguyen; Xianghe Yan; Gaylen A. Uhlich; Mark Alexander Webber;     Show all 9 Authors
Source:
PloS one v.8 no.12 pp. -
ISSN:
1932-6203
Subject:
Escherichia coli O157; antibiotics; bacteria; biofilm; mutation; oxidative stress; pathogen survival; regulator genes; serotypes; starvation
Abstract:
... The biofilm life style helps bacteria resist oxidative stress, desiccation, antibiotic treatment, and starvation. Biofilm formation involves a complex regulatory gene network controlled by various environmental signals. It was previously shown that prophage insertions in mlrA and heterogeneous mutations in rpoS constituted major obstacles limiting biofilm formation and the expression of extracellu ...
DOI:
10.1371/journal.pone.0084863
PubMed:
24386426
PubMed Central:
PMC3874044