Non-photochemical fluorescence quenching in Chromera velia is enabled by fast violaxanthin de-epoxidation

0362742 - MBÚ 2012 RIV GB eng J - Článek v odborném periodiku
Kotabová, Eva - Kaňa, Radek - Jarešová, Jana - Prášil, Ondřej
Non-photochemical fluorescence quenching in Chromera velia is enabled by fast violaxanthin de-epoxidation.
FEBS Letters. Roč. 585, č. 12 (2011), 1941-1945. ISSN 0014-5793. E-ISSN 1873-3468
Grant CEP: GA AV ČR IAA601410907; GA ČR GP206/09/P094
Výzkumný záměr: CEZ:AV0Z50200510
Klíčová slova: Non-photochemical fluorescence quenching * Light-harvesting * Violaxanthin
Kód oboru RIV: EE - Mikrobiologie, virologie
Impakt faktor: 3.538, rok: 2011

We analyzed a unique non-photochemical quenching (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
Trvalý link: http://hdl.handle.net/11104/0198980