Fig. 2.

Pigment content in one-day diatom culture illuminated with 1250 μmol photons m⁻² s⁻¹ for 5 h. Phaeodactylum tricornutum was cultivated at 15 °C, under white fluorescent light (100 μmol photons m⁻² s⁻¹) in a 16/8 h day/night photoperiod. Samples were collected every hour. Pigment content was determined by HPLC and expressed as a percentage value. The data are means of three replicates; a sample marked with an asterisk is mean of seven replicates. Statistical data are given in Table A.1 in Supplementary Material