Diadinoxanthin and diatoxanthin (DD and DT) content and de-epoxidation state (DES) of the WT and <i>Dde</i> transformants of <i>Phaeodactylum tricornutum</i> grown under low light (LL).

Diadinoxanthin (DD) and diatoxanthin (DT) content (in mol/100 mol Chl a), and the de-epoxidation state (DES) of the WT (+/− dithiothreitol, DTT) and the Dde transformants of P. tricornutum cells (LL grown) after a 5 min 450 µmol photons⋅m−2⋅s−1 light treatment. DES (in%) = DT/(DD+DT) × 100. Values are averages ± SD of three to five measurements.