The expression of hrpA or hrpN of Dickeya dadantii 3937 (Ech3937), gacA mutant Ech137, iaaM mutant Ech138, rsmB mutant 148 and gacS mutant Ech149 in MM and MM supplemented with 0.1 mM OCA (MMOCA).

aThe promoter activities were compared at 6, 12, and 24 h of bacterial growth. The fluorescence intensities were collected, including average GFP fluorescence intensity of total bacterial cells (Total), average GFP fluorescence intensity of GFP expressing bacterial cells (GFP+), and the percentage of GFP expressing bacterial cells of the total bacterial cells (GFP+%).bValues are a representative of at least two experiments with similar results. Three replicates were used in this experiment. The value is present as the average of three replicates with standard deviation (SD).