Journal
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Volume 74, Issue 2, Pages 535-539Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.02271-07
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The gene expression profiles of Escherichia coli strains grown anaerobically with or without Acacia mearnsii (black wattle) extract were compared to identify tannin resistance strategies. The cell envelope stress protein gene spy and the multidrug transporter-encoding operon mdtABCD, both under the control of the BaeSR two-component regulatory system, were significantly up-regulated in the presence of tannins. BaeSR mutants were more tannin sensitive than their wild-type counterparts.
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