Temperature dependence of photosynthesis and thylakoid lipid composition in the red snow alga Chlamydomonas cf. nivalis (Chlorophyceae)
Jazyk angličtina Země Velká Británie, Anglie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
24698015
DOI
10.1111/1574-6941.12299
Knihovny.cz E-zdroje
- Klíčová slova
- Chlamydomonas, electron transfer, phosphatidylglycerol, photosystem II, snow algae, temperature adaptation,
- MeSH
- chinony metabolismus MeSH
- Chlamydomonas růst a vývoj metabolismus MeSH
- fotosyntéza * MeSH
- fotosystém II (proteinový komplex) chemie metabolismus MeSH
- fyziologická adaptace MeSH
- intracelulární membrány metabolismus MeSH
- konzervovaná sekvence MeSH
- kyslík metabolismus MeSH
- lipidy MeSH
- metabolismus lipidů MeSH
- molekulární sekvence - údaje MeSH
- nízká teplota MeSH
- sekvence aminokyselin MeSH
- teplota MeSH
- termodynamika MeSH
- transport elektronů MeSH
- tylakoidy metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- chinony MeSH
- fotosystém II (proteinový komplex) MeSH
- kyslík MeSH
- lipidy MeSH
Here, we report an effect of short acclimation to a wide span of temperatures on photosynthetic electron transfer, lipid and fatty acid composition in the snow alga Chlamydomonas cf. nivalis. The growth and oxygen evolution capacity were low at 2 °C yet progressively enhanced at 10 °C and were significantly higher at temperatures from 5 to 15 °C in comparison with the mesophilic control Chlamydomonas reinhardtii. In search of the molecular mechanisms responsible for the adaptation of photosynthesis to low temperatures, we have found unprecedented high rates of QA to QB electron transfer. The thermodynamics of the process revealed the existence of an increased structural flexibility that we explain with the amino acid changes in the D1 protein combined with the physico-chemical characteristics of the thylakoid membrane composed of > 80% negatively charged phosphatidylglycerol.
Citace poskytuje Crossref.org
Phylogeny and lipid profiles of snow-algae isolated from Norwegian red-snow microbiomes
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