Figure 2.

Carbohydrate (orange) and protein (blue) levels of Phaeodactylum tricornutum grown at blue light (465 nm) of (a) 10 µmol absorbed photons m⁻² s⁻¹ (Q_Phar) and (b) 30 µmol absorbed photons m⁻² s⁻¹ or at red light (660 nm) of (c) 10 µmol absorbed photons m⁻² s⁻¹ and (d) 30 µmol absorbed photons m⁻² s⁻¹ in a 14 h light/10 h dark cycle. The time axes correspond to the time in the light phase. FTIR spectra were detected every 2 h and used for the calculation of the macromolecular composition (according to Wagner et al. 2010). The carbohydrate and protein levels were normalized to the values at 3 h into the light phase (t₃) (modified according to [42].