FIG 3.

Phenotypes of the ΔcsrA mutant. (A) Twitching motility. (B) Growth of wild type (black symbols) or the ΔcsrA mutant (red symbols) in M9-succinate in the absence (closed symbols) or presence (open symbols) of 0.5% ethanol. The data shown are representative of each strain and condition. (C) Crystal violet staining of biofilms from wild type, ΔcsrA mutant, ΔcsrA mutant with empty vector, and ΔcsrA mutant with pAB2750. (D) Catalase activity of wild type, ΔcsrA mutant, ΔcsrA mutant with empty vector, and ΔcsrA mutant with pAB2750.