ArticleProceedings of the National Academy of Sciences of the United States of America2012
Thylakoid potassium channel is required for efficient photosynthesis in cyanobacteria.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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Who cites it
30 citing papers in PubMed, 67 citations in OpenAlex.
- Electron transport reactions of cyanobacterial photosynthesis and state-of-the-art in vivo measurement techniques.Plant physiology · 2026Review
- An ancestral glutamate receptor mediates cell volume regulation during high KThe Journal of biological chemistry · 2026Article
- The Link between Oxygen and Basement Membranes.Reviews of physiology, biochemistry and pharmacology · 2025Review
- Dissecting genomic regions and underlying candidate genes in groundnut MAGIC population for drought tolerance.BMC plant biology · 2024Article
- MgPhotosynthesis research · 2024Article
- Development of a Biotechnology Platform for the Fast-Growing CyanobacteriumBiomolecules · 2022Article
- Cyclic Electron Flow-Coupled Proton Pumping inMicroorganisms · 2022Article
- Cyanobacteria as Candidates to Support Mars Colonization: Growth and Biofertilization Potential Using Mars Regolith as a Resource.Frontiers in microbiology · 2022Article
- Current knowledge and recent advances in understanding metabolism of the model cyanobacterium Synechocystis sp. PCC 6803.Bioscience reports · 2020Review
- Opposing Pressures of Speed and Efficiency Guide the Evolution of Molecular Machines.Molecular biology and evolution · 2019Article
- Probing the electric field across thylakoid membranes in cyanobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Evidence for potassium transport activity of Arabidopsis KEA1-KEA6.Scientific reports · 2019Article
- Photosynthesis in Arabidopsis Is Unaffected by the Function of the Vacuolar KPlant physiology · 2019Article
- Microbially induced potassium enrichment in Paleoproterozoic shales and implications for reverse weathering on early Earth.Nature communications · 2019Article
- Optimization of ATP Synthase c-Rings for Oxygenic Photosynthesis.Frontiers in plant science · 2019Article
- High-throughput interaction screens illuminate the role of c-di-AMP in cyanobacterial nighttime survival.PLoS genetics · 2018Article
- Dissecting the Native Architecture and Dynamics of Cyanobacterial Photosynthetic Machinery.Molecular plant · 2017Article
- A bestrophin-like protein modulates the proton motive force across the thylakoid membrane in Arabidopsis.Journal of integrative plant biology · 2016Article
- Anionic metabolite biosynthesis enhanced by potassium under dark, anaerobic conditions in cyanobacteria.Scientific reports · 2016Article
- A voltage-dependent chloride channel fine-tunes photosynthesis in plants.Nature communications · 2016Article
Corrections and comments
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Authors and funding
10 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A potassium channel (SynK) of the cyanobacterium Synechocystis sp. PCC 6803, a photoheterotrophic model organism for the study of photosynthesis, has been recently identified and demonstrated to function as a potassium selective channel when expressed in a heterologous system and to be located predominantly to the thylakoid membrane in cyanobacteria. To study its physiological role, a SynK-less knockout mutant was generated and characterized. Fluorimetric experiments indicated that SynK-less cyanobacteria cannot build up a proton gradient as efficiently as WT organisms, suggesting that SynK might be involved in the regulation of the electric component of the proton motive force. Accordingly, measurements of flash-induced cytochrome b(6)f turnover and respiration pointed to a reduced generation of ΔpH and to an altered linear electron transport in mutant cells. The lack of the channel did not cause an altered membrane organization, but decreased growth and modified the photosystem II/photosystem I ratio at high light intensities because of enhanced photosensitivity. These data shed light on the function of a prokaryotic potassium channel and reports evidence, by means of a genetic approach, on the requirement of a thylakoid ion channel for optimal photosynthesis.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.