Molecular basis of chromatic adaptation in pennate diatom Phaeodactylum tricornutum

0443167 - BC 2016 RIV NL eng J - Journal Article
Herbstová, Miroslava - Bína, David - Koník, P. - Gardian, Zdenko - Vácha, František - Litvín, Radek
Molecular basis of chromatic adaptation in pennate diatom Phaeodactylum tricornutum.
Biochimica Et Biophysica Acta-Bioenergetics. Roč. 1847, 6-7 (2015), s. 534-543. ISSN 0005-2728. E-ISSN 1879-2650
R&D Projects: GA ČR GBP501/12/G055
Institutional support: RVO:60077344
Keywords : Chromatic adaptation * Diatom * Heterokonta * Light harvesting antenna
Subject RIV: CE - Biochemistry
Impact factor: 4.864, year: 2015

Abstract The remarkable adaptability of diatoms living in a highly variable environment assures their prominence among marine primary producers. The present study integrates biochemical, biophysical and genomic data to bring new insights into the molecular mechanism of chromatic adaptation of pennate diatoms in model species Phaeodactylum tricornutum, a marine eukaryote alga possessing the capability to shift its absorption up to ~ 700 nm as a consequence of incident light enhanced in the red component. Presence of these low energy spectral forms of Chl a is manifested by room temperature fluorescence emission maximum at 710 nm (F710). Here we report a successful isolation of the supramolecular protein complex emitting F710 and identify a member of the Fucoxanthin Chlorophyll a/c binding Protein family, Lhcf15, as its key building block. This red-shifted antenna complex of P. tricornutum appears to be functionally connected to photosystem II.
Permanent Link: http://hdl.handle.net/11104/0245912