Fig. 4

Comparison of photosynthetic parameters in WT and transformants employing Pulse-Amplitude-Modulation (PAM) fluorometry using cells grown under ML (90 uE) and HL (200 uE). The quantum yields at the increasing light intensity of strains cultivated under ML (a) and HL (b). Insets show close-up values of measurements with light intensity of < 300 μE. The electron-transfer rates (ETRs) with the increasing light intensity under ML (c) and HL (d). Changes in non-photo chemical quenching (NPQ) yield with the increasing light intensity under ML (e) and HL (f). Data points represent means and standard errors (n = 3). Asterisks indicate the significant differences between WT and each transformants (WT vs. NsChlb7, WT vs. NsChlb19) determined by Student’s t test (*P < 0.05, **P < 0.01, ***P < 0.001)