Fig. 5
σPSII vs Y(NPQ) from rapid light curves and the corresponding linear regression. Individual data points of all measured strains cultivated both under low light (six biological replicates each) and high light (five biological replicates each). In order to discern Lhcx and Dt-dependent qE processes from qI processes, data points where an increase of Y(NPQ) did not lead to a further downregulation of σPSII are not included in the regression calculation, but indicated in light gray. This was determined by calculating the percent change of each σPSII from its previous light step. If σPSII decreased by < 5% of the total measured decrease for that curve while Y(NPQ) increased, it was omitted. Data points above 600 µmol photons m−2 s−1 and data points with a negative Y(NPQ) were also removed. A linear regression line, the 95% confidence interval, the regression equation and the r2 are indicated. Source data are provided as a Source Data file
