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).

<p>Diadinoxanthin (DD) and diatoxanthin (DT) content (in mol/100 mol Chl <i>a</i>), and the de-epoxidation state (DES) of the WT (+/− dithiothreitol, DTT) and the <i>Dde</i> transformants of <i>P. tricornutum</i> 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.