Molecular basis of chromatic adaptation in pennate diatom Phaeodactylum tricornutum
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
25748970
DOI
10.1016/j.bbabio.2015.02.016
PII: S0005-2728(15)00047-X
Knihovny.cz E-zdroje
- Klíčová slova
- Chromatic adaptation, Diatom, Heterokonta, Light harvesting antenna, Phaeodactylum tricornutum, Red-shifted antenna complex,
- MeSH
- barva * MeSH
- chlorofyl a MeSH
- chlorofyl metabolismus MeSH
- fluorescence * MeSH
- fluorescenční spektrometrie MeSH
- fotosystém II - proteinový komplex metabolismus MeSH
- fylogeneze MeSH
- fyziologická adaptace * MeSH
- hmotnostní spektrometrie s elektrosprejovou ionizací MeSH
- rozsivky fyziologie MeSH
- světlo MeSH
- světlosběrné proteinové komplexy metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- chlorofyl a MeSH
- chlorofyl MeSH
- fotosystém II - proteinový komplex MeSH
- světlosběrné proteinové komplexy MeSH
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.
Citace poskytuje Crossref.org
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