FliZ and RcsBC affect hilA expression through HilD. (A) The hilA-lacZ fusion strains with mutations indicated below the graph contained pWKS30 or pFliZ. WT, wild type. The strains used were JS798 to JS807. (B) The hilA-lacZ fusion strains contained deletions of genes indicated below the graph. The strains used were JS749, JS778, JS782, JS792, JS808, and JS809.