ArticleProceedings of the National Academy of Sciences of the United States of America2010
Sigma factor phosphorylation in the photosynthetic control of photosystem stoichiometry.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
52 citing papers in PubMed, 98 citations in OpenAlex.
- Elongator complex differentially regulates transcription and translation in the hypocotyl and cotyledons during early light-dependent Arabidopsis development.Plant & cell physiology · 2026Article
- Genome-Wide Identification of Sigma Factors inInternational journal of molecular sciences · 2026Article
- Inorganic carbon levels regulate growth via SigC signaling cascade in cyanobacteria.The New phytologist · 2025Article
- Metabolism in Sync: The Circadian Clock, a Central Hub for Light-Driven Chloroplastic and Mitochondrial Entrainment.Plants (Basel, Switzerland) · 2025Review
- Circadian and environmental signal integration in a natural population ofProceedings of the National Academy of Sciences of the United States of America · 2024Article
- Chloroplast gene expression: Recent advances and perspectives.Plant communications · 2023Review
- Low-temperature and circadian signals are integrated by the sigma factor SIG5.Nature plants · 2023Article
- Circadian regulation of the transcriptome in a complex polyploid crop.PLoS biology · 2022Article
- Photosystem stoichiometry adjustment is a photoreceptor-mediated process in Arabidopsis.Scientific reports · 2022Article
- Retrograde and anterograde signaling in the crosstalk between chloroplast and nucleus.Frontiers in plant science · 2022Review
- A photosynthesis operon in the chloroplast genome drives speciation in evening primroses.The Plant cell · 2021Article
- Identification of biological pathway and process regulators using sparse partial least squares and triple-gene mutual interaction.Scientific reports · 2021Article
- Regulation of Phaeodactylum plastid gene transcription by redox, light, and circadian signals.Photosynthesis research · 2021Article
- Plastid Gene Transcription: An Update on Promoters and RNA Polymerases.Methods in molecular biology (Clifton, N.J.) · 2021Article
- Maize ANT1 modulates vascular development, chloroplast development, photosynthesis, and plant growth.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- The plastid transcription machinery and its coordination with the expression of nuclear genome: Plastid-Encoded Polymerase, Nuclear-Encoded Polymerase and the Genomes Uncoupled 1-mediated retrograde communication.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020Review
- Light-responsive expression atlas reveals the effects of light quality and intensity in Kalanchoë fedtschenkoi, a plant with crassulacean acid metabolism.GigaScience · 2020Article
- Sigma factor 1 in chloroplast gene transcription and photosynthetic light acclimation.Journal of experimental botany · 2020Article
- Photosynthesis in a Changing Global Climate: Scaling Up and Scaling Down in Crops.Frontiers in plant science · 2020Review
- PhaeoNet: A Holistic RNAseq-Based Portrait of Transcriptional Coordination in the Model DiatomFrontiers in plant science · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
An imbalance in photosynthetic electron transfer is thought to be redressed by photosynthetic control of the rate of expression of genes encoding apoproteins of photosystem (PS)-I and PS-II in response to the redox state of plastoquinone (PQ), which is a connecting electron carrier. PS stoichiometry is then adjusted to enhance photosynthetic efficiency. In prokaryotes, sigma factors are well known for their participation in the control of RNA polymerase activity in transcription, whereas there have been no reports concerning their association with redox regulation. We have found that the phosphorylation of SIG1, the major sigma factor (SIG), is regulated by redox signals and selectively inhibits the transcription of the psaA gene, which encodes a PS-I protein. We produced transgenic Arabidopsis plants with or without the putative phosphorylation sites for SIG1 and demonstrated through in vivo labeling that Thr-170 was involved in the phosphorylation. We analyzed the in vivo and in vitro transcriptional responses of the transgenic Arabidopsis plants to the redox status in regard to involvement of the phosphorylation site. We revealed an enhanced phosphorylation of SIG1 under oxidative conditions of PQ in a form associated with the molecular mass of the holoenzyme. Phosphorylation of SIG1 proved crucial through a change in the promoter specificity for sustaining balanced expression of components in PS-I and PS-II and was responsible for harmonious electron flow to maintain photosynthetic efficiency.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.