Fig. 7
From: The significance of proline and glutamate on butanol chaotropic stress in Bacillus subtilis 168
Specific growth-rate inhibition percentage of B. subtilis wild-type and the recombinant strains with the overexpressed gltp or proHJ gene. Each recombinant B. subtilis strain with the overexpressed gltP (HK-GPOX) and with the overexpressed proHJ (HK′-HJOX) was challenged with 1.6 and 1.8% butanol. Cell optical density was interval measured to determine the percentage of specific growth inhibition in comparison to that of the recombinant B. subtilis strain harboring the pHK empty vector (a control). Data are means of the results from at least three individual experiments. Error bars indicate standard errors. The italic letters indicate significance level among strains at each butanol concentration (p < 0.05)