The growth rates and intracellular NADP+ levels in the GT and NadBox strains under photoautotrophic conditions where photon flux density is 50 μmol photons m−2 s−1. A) Growth curves of the GT and NadBox strains. Statistically significant differences between OD730 of the GT and NadBox strains were examined by performing Welch's t-test and these are represented by asterisks (**P < 0.005). B) Intracellular NADP+ levels in the GT and NadBox strains. The data represent relative values, and the values in the GT strain after photoautotrophic cultivation represent 100%. Statistically significant difference was examined by performing Welch's t-test and is represented by an asterisk (*P < 0.05). All data in Fig. 7 represent the mean ± Sd based on 4 independent measurements.
