Fig. 3
NPQ kinetics and xanthophyll cycle activity in wild type and mutant strains. Strains were concentrated to a chlorophyll a amount of 10 mg L−1. a NPQ capacity of wild type (four biological replicates (BR)), x1KO_1a (four BR), and x1KO_1a supplemented lines x1KO + x2a (three BR), x1KO + x3a (four BR) and x1KO + x4a (three BR) during 10 min exposure to 1700 µmol photons m−2 s−1 (white bar), followed by 18 min of low light (gray bar). Red points indicate samples that had been incubated with DTT prior to high light exposure in order to prevent diatoxanthin formation; b pool size of diadinoxanthin + diatoxanthin (Dd + Dt) per chlorophyll a and de-epoxidation state (DES) following 10 min illumination with 1700 µmol photons m−2 s−1 without and with prior application of DTT. Three BR were measured. Source data are provided as a Source Data file
