Fig. 2
Effects of high temperature and different CO2 concentrations on the growth and photosynthetic rates of the wild type and mutants 283 and 359 of Chlorella vulgaris ESP-31. a The growth performance under different CO2 concentrations (5 and 25% CO2/air) at 40 °C. b Biomass productivity. c Net photosynthesis rates. (D) Maximum PSII activity. A 50-mL culture of each strain aerated with different CO2 (0.1 vvm) was grown in BG-11 at 40 °C under 12 h light–dark (light intensity 150 μmol m−2 s−1) conditions for 4 days. Data shown are the means (along with the standard deviations) of at least two independent experiments