FIGURE 1.

Correlation between photosynthetic quantum yield and H₂ production rates of C. reinhardtii WT and Stm6Glc4 during the shift from aerobiosis to anaerobiosis (induced by S-deprivation). A, quantum yield of PSII (ΦPSII) of sealed, sulfur-depleted C. reinhardtii cultures. B, total H₂ production during S-deprivation. Harvesting time points (a–e) are labeled. Each curve represents an average of at least three biological replicates. Error bars indicate standard errors. The amount of H₂ produced in the WT was set to 100%.