ArticlePhotosynthesis research2000
Investigation of the plastoquinone pool size and fluorescence quenching in thylakoid membranes and Photosystem II (PS II) membrane fragments.
Article in Photosynthesis research, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 53 citations in OpenAlex.
- Article
- The cytochrome bPhotosynthesis research · 2024Review
- Hydrogen Peroxide and Superoxide Anion Radical Photoproduction in PSII Preparations at Various Modifications of the Water-Oxidizing Complex.Plants (Basel, Switzerland) · 2019Article
- A comparative study of wavelength-dependent photoinactivation in photosystem II of drought-tolerant photosynthetic organisms in Antarctica and the potential risks of photoinhibition in the habitat.Annals of botany · 2018Article
- Light acclimation of shade-tolerant and light-resistant Tradescantia species: induction of chlorophyll a fluorescence and PPhotosynthesis research · 2016Article
- Induction events and short-term regulation of electron transport in chloroplasts: an overview.Photosynthesis research · 2015Review
- Critical assessment of the emission spectra of various photosystem II core complexes.Photosynthesis research · 2015Article
- Frequently asked questions about in vivo chlorophyll fluorescence: practical issues.Photosynthesis research · 2014Review
- Chlorophyll a fluorescence: beyond the limits of the Q(A) model.Photosynthesis research · 2014Review
- A model of chlorophyll a fluorescence induction kinetics with explicit description of structural constraints of individual photosystem II units.Photosynthesis research · 2013Article
- Chlorophyll a fluorescence induction: a personal perspective of the thermal phase, the J-I-P rise.Photosynthesis research · 2012Review
- Analysis of initial chlorophyll fluorescence induction kinetics in chloroplasts in terms of rate constants of donor side quenching release and electron trapping in photosystem II.Photosynthesis research · 2008Article
- Functional asymmetry of photosystem II D1 and D2 peripheral chlorophyll mutants of Chlamydomonas reinhardtii.Proceedings of the National Academy of Sciences of the United States of America · 2002Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The efficiency of oxidized endogenous plastoquinone-9 (PQ-9) as a non-photochemical quencher of chlorophyll fluorescence has been analyzed in spinach thylakoids and PS II membrane fragments isolated by Triton X-100 fractionation of grana stacks. The following results were obtained: (a) After subjection of PS II membrane fragments to ultrasonic treatment in the presence of PQ-9, the area over the induction curve of chlorophyll fluorescence owing to actinic cw light increases linearly with the PQ-9/PS II ratio in the reconstitution assay medium; (b) the difference of the maximum fluorescence levels, F(max), of the induction curves, measured in the absence and presence of DCMU, is much more pronounced in PS II membrane fragments than in thylakoids; (c) the ratio F(max)(-DCMU)/F(max)(+DCMU) increases linearly with the content of oxidized PQ-9 that is varied in the thylakoids by reoxidation of the pool after preillumination and in PS II membrane fragments by the PQ-9/PS II ratio in the reconstitution assay; (d) the reconstitution procedure leads to tight binding of PQ-9 to PS II membrane fragments, and PQ-9 cannot be replaced by other quinones; (e) the fluorescence quenching by oxidized PQ-9 persists at low temperatures, and (f) oxidized PQ-9 preferentially affects the F695 of the fluorescence emission spectrum at 77 K. Based on the results of this study the oxidized PQ-9 is inferred to act as a non-photochemical quencher via a static mechanism. Possible implications for the nature of the quenching complex are discussed.
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Registered trials
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