Figure 2. PPO is important for detoxification of phenolics by adult Drosophila.

New adults (day 1 after eclosion) of Drosophila (w¹¹¹⁸ and the PPO deletion mutants, as indicated) were fed a diet supplemented with nothing (A), l-DOPA (B), gallic acid (C), tannic acid (D) and green tea powder (E) as indicated. Living adults were counted daily, from which survival ratios were calculated. Feeding assays were repeated independently three times; in each replicate, 20 adults were fed a diet supplemented with the indicated materials. *P < 0.05; **P < 0.001; ***P < 0.0001.