On the relationship between the non-photochemical quenching of the chlorophyll fluorescence and the Photosystem II light harvesting efficiency. A repetitive flash fluorescence induction study

0170544 - UEK-B 20013003 RIV NL eng J - Journal Article
Koblížek, Michal - Kaftan, David - Nedbal, Ladislav
On the relationship between the non-photochemical quenching of the chlorophyll fluorescence and the Photosystem II light harvesting efficiency. A repetitive flash fluorescence induction study.
Photosynthesis Research. Roč. 68, č. 2 (2001), s. 141-152. ISSN 0166-8595. E-ISSN 1573-5079
Institutional research plan: CEZ:AV0Z6087904
Keywords : Light adaptation * non-photochemical quenching * Phaeodactylum tricornutum
Subject RIV: BO - Biophysics
Impact factor: 1.739, year: 2001

Plants respond to excess light by a photoprotective reduction of the light harvesting efficiency. The notion that the non-photochemical quenching of chlorophyll fluorescence can be reliably used as an indicator of the photoprotection is put to a test here. The technique of the repetitive flash fluorescence induction is employed to measure in parallel the non-photochemical quenching of the maximum fluorescence and the functional cross-section (Phi (PS II)) which is a product of the photosystem II optical cross-section a(PS II) and of its photochemical yield Phi (PS II) (sigma (PS II) = a(PS II) Phi (PS II)). The quenching is measured for both, the maximum fluorescence found in a single-turnover flash (F-M(ST)) and in a multiple turnover light pulse (FF-M(MT)).
Permanent Link: http://hdl.handle.net/11104/0067628