ArticlePlant physiology2014
The redox potential of the plastoquinone pool of the cyanobacterium Synechocystis species strain PCC 6803 is under strict homeostatic control.
Article in Plant physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 49 citations in OpenAlex.
- Estimating the redox state of the plastoquinone pool in algae and cyanobacteria via OJIP fluorescence: perspectives and limitations.Photosynthesis research · 2026Article
- Plastoquinone redox status influences carboxysome integrity via a RpaA- and reactive oxygen species-dependent regulatory network.The Plant journal : for cell and molecular biology · 2025Article
- Shedding light on blue-green photosynthesis: A wavelength-dependent mathematical model of photosynthesis in Synechocystis sp. PCC 6803.PLoS computational biology · 2024Article
- Functional consequences of modification of the photosystem I/photosystem II ratio in the cyanobacteriumJournal of bacteriology · 2024Article
- Phenazines as model low-midpoint potential electron shuttles for photosynthetic bioelectrochemical systems.Chemical science · 2021Article
- The Circadian Clock-A Molecular Tool for Survival in Cyanobacteria.Life (Basel, Switzerland) · 2020Review
- Biophotovoltaics: Green Power Generation From Sunlight and Water.Frontiers in microbiology · 2019Review
- Deletion ofApplied and environmental microbiology · 2018Article
- A Synthetic Biology Approach to Engineering Living Photovoltaics.Energy & environmental science · 2017Article
- Acclimation to High COPlant physiology · 2017Article
- Transition from exponential to linear photoautotrophic growth changes the physiology of Synechocystis sp. PCC 6803.Photosynthesis research · 2017Article
- Distinguishing the Roles of Thylakoid Respiratory Terminal Oxidases in the Cyanobacterium Synechocystis sp. PCC 6803.Plant physiology · 2016Article
- All Three Endogenous Quinone Species of Escherichia coli Are Involved in Controlling the Activity of the Aerobic/Anaerobic Response Regulator ArcA.Frontiers in microbiology · 2016Article
- Cyanobacterial Alkanes Modulate Photosynthetic Cyclic Electron Flow to Assist Growth under Cold Stress.Scientific reports · 2015Article
- Cyanobacterial Oxygenic Photosynthesis is Protected by Flavodiiron Proteins.Life (Basel, Switzerland) · 2015Review
- Comparison of the Photosynthetic Yield of Cyanobacteria and Green Algae: Different Methods Give Different Answers.PloS one · 2015Article
- Systems and photosystems: cellular limits of autotrophic productivity in cyanobacteria.Frontiers in bioengineering and biotechnology · 2015Review
- Coregulated genes link sulfide:quinone oxidoreductase and arsenic metabolism in Synechocystis sp. strain PCC6803.Journal of bacteriology · 2014Article
- Synechocystis: Not Just a Plug-Bug for CO2, but a Green E. coli.Frontiers in bioengineering and biotechnology · 2014Review
- From Photons to Product - A Quantitative Study on Electron Fluxes in Synechocystis sp. PCC 6803 Applied for Oxygenase Catalysis.Physiologia plantarumArticle
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A method is presented for rapid extraction of the total plastoquinone (PQ) pool from Synechocystis sp. strain PCC 6803 cells that preserves the in vivo plastoquinol (PQH2) to -PQ ratio. Cells were rapidly transferred into ice-cold organic solvent for instantaneous extraction of the cellular PQ plus PQH2 content. After high-performance liquid chromatography fractionation of the organic phase extract, the PQH2 content was quantitatively determined via its fluorescence emission at 330 nm. The in-cell PQH2-PQ ratio then followed from comparison of the PQH2 signal in samples as collected and in an identical sample after complete reduction with sodium borohydride. Prior to PQH2 extraction, cells from steady-state chemostat cultures were exposed to a wide range of physiological conditions, including high/low availability of inorganic carbon, and various actinic illumination conditions. Well-characterized electron-transfer inhibitors were used to generate a reduced or an oxidized PQ pool for reference. The in vivo redox state of the PQ pool was correlated with the results of pulse-amplitude modulation-based chlorophyll a fluorescence emission measurements, oxygen exchange rates, and 77 K fluorescence emission spectra. Our results show that the redox state of the PQ pool of Synechocystis sp. strain PCC 6803 is subject to strict homeostatic control (i.e. regulated between narrow limits), in contrast to the more dynamic chlorophyll a fluorescence signal.
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