Molecular basis of chromatic adaptation in pennate diatom Phaeodactylum tricornutum

Biochimica Et Biophysica Acta
Miroslava HerbstovaRadek Litvín

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. Phylogenetic analyses do not support relation of Lhcf15 of P. tricornutum to other known red-shifted antenna proteins thus indicating a case of convergent evolutionary adaptation towards survival in shaded environments.

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Citations

Aug 4, 2016·Photosynthesis Research·David BínaRadek Litvín
Feb 26, 2016·Photosynthesis Research·Radek LitvínZdenko Gardian
Oct 16, 2016·Biochimica Et Biophysica Acta. Bioenergetics·Erica BelgioOndřej Prášil
Jan 10, 2019·PloS One·Gunvor Bjerkelund RøkkeMartin F Hohmann-Marriott
Sep 8, 2017·Science Advances·Weiqi FuKourosh Salehi-Ashtiani
Jul 15, 2018·Photosynthesis Research·Simona StreckaiteManuel J Llansola-Portoles
Jul 17, 2018·Photosynthesis Research·Allen K Derks, Doug Bruce
Oct 18, 2020·Journal of Experimental Botany·Vasco Giovagnetti, Alexander V Ruban
Jan 3, 2021·Photosynthesis Research·Gilbert E KayanjaSujith Puthiyaveetil
Nov 12, 2018·Biochimica Et Biophysica Acta. Bioenergetics·David BínaTomáš Polívka
Jun 4, 2019·Biochimica Et Biophysica Acta. Bioenergetics·Claudia Büchel
Aug 20, 2019·The Journal of Physical Chemistry Letters·Yoshifumi UenoSeiji Akimoto

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