Fig. 4: Non-photochemical quenching (NPQ) responses of high light acclimated cell cultures.

Replicate cultures were sampled and treated with inhibitors reported to interfere with different NPQ mechanisms including (A) octyl gallate (OG) and (B) antimycin A (AA). Data points are presented as mean values ± SD of biological replicate cultures (n = 3). Asterisks indicate significant differences between inhibitor treated NPQ measures and untreated control values as determined by a two-sided T-test, with p-values displayed above each significantly different comparison (p < 0.05) and insignificant p-values omitted.