ArticlePhotosynthesis research2005
Storage of light-driven transthylakoid proton motive force as an electric field (Deltapsi) under steady-state conditions in intact cells of Chlamydomonas reinhardtii.
Article in Photosynthesis research, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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Who cites it
24 citing papers in PubMed, 55 citations in OpenAlex.
- Chloroplast ATP synthase: From structure to engineering.The Plant cell · 2024Review
- Regulation of Microalgal Photosynthetic Electron Transfer.Plants (Basel, Switzerland) · 2024Review
- Chloroplast phosphate transporter CrPHT4-7 regulates phosphate homeostasis and photosynthesis in Chlamydomonas.Plant physiology · 2024Article
- Impact of engineering the ATP synthase rotor ring on photosynthesis in tobacco chloroplasts.Plant physiology · 2023Article
- Flavodiiron proteins enhance the rate of CO2 assimilation in Arabidopsis under fluctuating light intensity.Plant physiology · 2022Article
- Analyzing the effect of ion binding to the membrane-surface on regulating the light-induced transthylakoid electric potential (ΔΨFrontiers in plant science · 2022Article
- Modification of Activity of the Thylakoid HPlant physiology · 2019Article
- Analyzing both the fast and the slow phases of chlorophyll a fluorescence and P700 absorbance changes in dark-adapted and preilluminated pea leaves using a Thylakoid Membrane model.Photosynthesis research · 2019Article
- Optimization of ATP Synthase c-Rings for Oxygenic Photosynthesis.Frontiers in plant science · 2019Article
- M-type thioredoxins are involved in the xanthophyll cycle and proton motive force to alter NPQ under low-light conditions in Arabidopsis.Plant cell reports · 2018Article
- Hacking the thylakoid proton motive force for improved photosynthesis: modulating ion flux rates that control proton motive force partitioning into ΔPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017Review
- The Liverwort,Plant physiology · 2017Article
- Thylakoid membrane model of the Chl a fluorescence transient and P700 induction kinetics in plant leaves.Photosynthesis research · 2016Article
- Identification of pH-sensing Sites in the Light Harvesting Complex Stress-related 3 Protein Essential for Triggering Non-photochemical Quenching in Chlamydomonas reinhardtii.The Journal of biological chemistry · 2016Article
- Induction events and short-term regulation of electron transport in chloroplasts: an overview.Photosynthesis research · 2015Review
- Modeling of the redox state dynamics in photosystem II of Chlorella pyrenoidosa Chick cells and leaves of spinach and Arabidopsis thaliana from single flash-induced fluorescence quantum yield changes on the 100 ns-10 s time scale.Photosynthesis research · 2015Article
- pH-dependent regulation of electron transport and ATP synthesis in chloroplasts.Photosynthesis research · 2013Review
- Thylakoid potassium channel is required for efficient photosynthesis in cyanobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2012Article
- Acclimation of Chlamydomonas reinhardtii to different growth irradiances.The Journal of biological chemistry · 2012Article
- Inorganic carbon acquisition by eukaryotic algae: four current questions.Photosynthesis research · 2010Review
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Proton motive force (pmf) is physiologically stored as either a DeltapH or a membrane potential (Deltapsi) across bacterial and mitochondrial energetic membranes. In the case of chloroplasts, previous work (Cruz et al. 2001, Biochemistry 40: 1226-1237) indicates that Deltapsi is a significant fraction of pmf, in vivo, and in vitro as long as the activities of counterions are relatively low. Kinetic analysis of light-induced changes in the electrochromic shift (ECS) in intact leaves was consistent with these observations. In this work, we took advantage of the spectroscopic properties of the green alga, Chlamydomonas reinhardtii, to demonstrate that light-driven Deltapsi was stored in vivo over the hours time scale. Analysis of the light-induced ECS kinetics suggested that the steady-state Deltapsi in 400 micromol photons m(-2) s(-1) red light was between 20 and 90 mV and that this represented about 60% of the light-induced increase in pmf. By extrapolation, it was surmised that about half of total (basal and light-induced) pmf is held as Deltapsi. It is hypothesized that Deltapsi is stabilized either by maintaining low chloroplast ionic strength or by active membrane ion transporters. In addition to the strong implications for regulation of photosynthesis by the xanthophyll cycle, these results imply that pmf partitioning is important across a wide range of species.
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