Figure 6.
Activity of glutathione-S-transferase (GST, A) in U. lactuca cultivated without anthracene (open circles) and with 5 μM of ANT (black circles) for 0–72 h. The activity of GST is expressed as micromole per gram of fresh tissue (FT). Relative level of GST transcripts (B) in the alga cultivated with 5 μM of ANT (black circles). The relative level of GST transcripts is expressed as 2−ΔΔCT. Symbols represent mean values of three independent experiments SD. Letters indicate significant differences among experiments (P < 0.05).