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Non-photochemical fluorescence quenching in Chromera velia is enabled by fast violaxanthin de-epoxidation
E. Kotabová, R. Kaňa, J. Jarešová, O. Prášil,
Jazyk angličtina Země Nizozemsko
Typ dokumentu časopisecké články, práce podpořená grantem
NLK
Free Medical Journals
od 1968 do 2015
Wiley Free Content
od 1997 do Před 1 rokem
Elsevier Open Access Journals
od 1968-07-01 do 2015-12-21
Elsevier Open Archive Journals
od 1968-07-01 do Před 1 rokem
- MeSH
- Chlorophyta fyziologie MeSH
- epoxidové sloučeniny metabolismus MeSH
- fluorescence MeSH
- fotosyntéza MeSH
- fotosystém II - proteinový komplex metabolismus MeSH
- xanthofyly metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Non-photochemical quenching (NPQ) is a mechanism protecting photosynthetic organisms against excessive irradiation. Here, we analyze a unique NPQ mechanism in the alga Chromera velia, a recently discovered close relative of apicomplexan parasites. NPQ in C. velia is enabled by an operative and fast violaxanthin de-epoxidation to zeaxanthin without accumulation of antheraxanthin. In C. velia violaxanthin also serves as a main light-harvesting pigment. Therefore, in C. velia violaxanthin acts as a key factor in both light harvesting and photoprotection. This is in contrast to a similar alga, Nannochloropsis limnetica, where violaxanthin has only light-harvesting function.
Citace poskytuje Crossref.org
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- $a Non-photochemical quenching (NPQ) is a mechanism protecting photosynthetic organisms against excessive irradiation. Here, we analyze a unique NPQ mechanism in the alga Chromera velia, a recently discovered close relative of apicomplexan parasites. NPQ in C. velia is enabled by an operative and fast violaxanthin de-epoxidation to zeaxanthin without accumulation of antheraxanthin. In C. velia violaxanthin also serves as a main light-harvesting pigment. Therefore, in C. velia violaxanthin acts as a key factor in both light harvesting and photoprotection. This is in contrast to a similar alga, Nannochloropsis limnetica, where violaxanthin has only light-harvesting function.
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