Figure 4

Growth defect of the B. abortus strain expressing the aidB-yfp fusion (XDB1120). The growth of B. abortus wild-type, aidB mutant and XDB1120 (pMR-aidB-yfp) strains was followed by recording OD at 600 nm in a Bioscreen. Duplicates (1) and (2) are shown for each strain, for 2YT (left panel) or tryptic soy broth (right panel) as culture media. In both culture media, the OD₆₀₀ during stationary culture phase of the XDB1120 strain is lower compared to the wild type control.