Fig. 4From: Identification of alcohol stress tolerance genes of Synechocystis sp. PCC 6803 using adaptive laboratory evolutionSpecific growth rates of the ∆mcpA/∆envD and ∆hik43/∆envD strains under different concentrations of isobutanol. The asterisks indicate significant differences between the parental and the other strains (t test, P < 0.05). The specific growth rate was calculated from an OD730 of 0 and 48 h of each batch culture. Error bars represent standard deviations of three replicatesBack to article page