Short-term acclimation to light quality shifts.

<p>The changes in (A) the Chl <i>a</i> concentration and (B) Φ_PSII of <i>P. tricornutum</i> cultures were recorded for 10 h after the light quality shift at t₀ from BL to RL and RL to BL. Additionally, the time in the light phase is given above the plot. The asterisks depict the p-values of the respective data point compared to the steady state the cultures were shifted from at the same time point (Chl <i>a</i>) or the daily mean value when this was constant (Φ_PSII). n = 4–8 for the Chl <i>a</i> concentrations and n = 3–4 for F_V′ F_M′⁻¹. The exact values are specified in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0099727#pone.0099727.s003" target="_blank">Table S3</a>.