Pigments and photosynthetic properties of WT and the Dde transformants of Phaeodactylum tricornutum.

Pigment content (in mol/100 mol Chl a) and photosynthetic properties of the WT and the Dde transformants of P. tricornutum cells grown under low light (45 µmol photons⋅m−2⋅s−1). Chl a is given in pg cell−1, DD: diadinoxanthin, Fv/Fm: the maximum photosynthetic efficiency of photosystem (PS) II, rETRmax: is the relative maximal rate of linear electron transport (µmol photons⋅m−2⋅s−1), α: the maximum light used efficiency (in µmol photons⋅m−2⋅s−1), Em: the light intensity needed to reach rETRmax in µmol photons⋅m−2⋅s−1, μ: the growth rate in d−1. Values are averages, ± SD of seven to nine measurements for the pigment data (except Chl a, three measurements) and three to four measurements for the other data.