Figure 1.

(a) Remote effect of emissions of the PGPB Azospirillum brasilense Cd and Bacillus pumilus ES4 and the control bacterium Escherichia coli DH5α on growth of the microalgae Chlorella sorokiniana, (b) growth in the presence of the CO₂ absorbant LiOH•H₂O, 0.3 g and (c) 0.5 g. (d) Remote effect of emissions on the volume of C. sorokiniana cells, (e) Growth of the PGPB in the culture medium, and (f), Increase in pH in the medium. The control bacterium (E. coli) was used only in experiments measuring the potential effect of produced CO₂ on microalgae growth and metabolite production. Values on curves denoted by different capital letters differ significantly using one-way ANOVA combined with LSD post-hoc analysis at P < 0.05. Points at each time interval denoted by different lowercase letters differ significantly at P < 0.05 in (a–d, f) using ANOVA and in (e) using Student’s t-test).