RT Journal Article
SR Electronic
A1 Boenigk, Jens
A1 Beisser, Daniela
A1 Franke, Luise
A1 Klar, Lea
A1 Ilić, Maja
A1 Fink, Patrick
T1 Differences in pigment composition and concentration between phototrophic, mixotrophic, and heterotrophic Chrysophyceae
JF Fottea
YR 2023
VO 23
IS 2
SP 223
OP 234
DO 10.5507/fot.2023.001
UL https://fottea.czechphycology.cz/artkey/fot-202302-0008.php
AB The presence of distinct pigments is characteristic of different algal groups while the relative concentration of these pigments may vary with light conditions. Here we investigate the pigment pattern of 35 strains of Chrysophyceae by means of high-performance liquid chromatography. We further investigated shifts in pigment concentrations between light and dark conditions and the conservation of these pigment patterns in heterotrophic, mixotrophic, and phototrophic taxa. We did not find chlorophyll in heterotrophic strains but carotenoids were present in all taxa. In phototrophs and mixotrophs, we confirm the presence of the chlorophylls-a, c<sub>1</sub>, and c<sub>2</sub> as well as of fucoxanthin. We provide evidence for the violaxanthin cycle as the dominant xanthophyll cycle. Moreover, we found pigments of the diadinoxanthin cycle in low concentrations. While pigment concentrations were regulated depending on light availability in photosynthetic taxa, they were unaffected by light in heterotrophic taxa.