Cloning, Identification, and Characterization of the rpoS-Like Sigma Factor rpoX from Vibrio alginolyticus

Figure 6

Stress survival of stationary-phase V. alginolyticus cells. Wild type (Op: closed circle; Tr: closed triangle), rpoX null mutant (Op: closed diamond; Tr: closed square), and complemented strains (Op: open circle; Tr: open triangle) were exposed to various stress conditions and the survival rate was determined as percentage of viable cells at the indicated time points. One hundred percent survival corresponds to number of viable cells prior to exposure to the indicated stress: (a) 45^∘C heat shock, (b) 30 mM H₂O₂, (c) 18% ethanol (d) and 2.5 M NaCl.

(a)

(b)

(c)

(d)