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Fig. 4 | BMC Microbiology

Fig. 4

From: A Recurrent Silent Mutation Implicates fecA in Ethanol Tolerance by Escherichia coli

Fig. 4

Comparisons of membrane permeability responses to environmental challenges. Symbols correspond to groups in Table 3. Ratios were calculated by comparing the average rate of uptake seen in Fig. 3 for an individual strain at the conditions indicated on the axis. Error bars are omitted for clarity. Solid black line indicates a slope of 1.0, thus representing no relative difference between the two environmental alterations indicated on the two axes. a Membrane permeability increase induced by ethanol exposure compared to the permeability induced by shifting culture temperature, b Permeability increase induced by temperature compared to the increase that results from the addition of ethanol and a temperature shift, c Permeability increase induced by ethanol exposure at 30 °C compared to the increase that results from the addition of ethanol and a temperature shift, d Effect of ethanol addition after a temperature shift and e Effect of temperature shift after ethanol exposure

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