Figure 8.

Effect of catalase on salt- and H₂O₂-induced expression of the gpx1 promoter:uidA fusion in tobacco cells. For details, see Figure 3. Bovine liver catalase, at a concentration of 130 U mL⁻¹ was added prior to salt or H₂O₂, except when indicated by an asterisk, where catalase was added 30 min after the addition of H₂O₂. NaCl and H₂O₂ were added at 0.2 m and 10 mm, respectively. White bars, no catalase; black bars, with catalase.