Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10795777 | Biochimica et Biophysica Acta (BBA) - Bioenergetics | 2014 | 8 Pages |
Abstract
Diatoms are characterized by very efficient photoprotective mechanisms where the excess energy is dissipated as heat in the main antenna system constituted by fucoxanthin-chlorophyll (Chl) protein complexes (FCPs). We performed Stark fluorescence spectroscopy on FCPs in their light-harvesting and energy dissipating states. Our results show that two distinct emitting bands are created upon induction of energy dissipation in FCPa and possibly in FCPb. More specifically one band is characterized by broad red shifted emission above 700Â nm and bears strong similarity with a red shifted band that we detected in the dissipative state of the major light-harvesting complex II (LHCII) of plants [26]. We discuss the results in the light of different mechanisms proposed to be responsible for photosynthetic photoprotection.
Keywords
Related Topics
Life Sciences
Agricultural and Biological Sciences
Plant Science
Authors
Md. Wahadoszamen, Artur Ghazaryan, Hande E. Cingil, Anjue Mane Ara, Claudia Büchel, Rienk van Grondelle, Rudi Berera,