ArticlePlant physiology2006
CO2 sensing at ocean surface mediated by cAMP in a marine diatom.
Article in Plant physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 51 citations in OpenAlex.
- Functional characterization of lactate metabolism and its key regulatory genes reveals lactate-mediated modulation of carbon and nitrogen metabolism in Phaeodactylum tricornutum.Microbial cell factories · 2025Article
- Low-CO2-inducible bestrophins outside the pyrenoid sustain high photosynthetic efficacy in diatoms.Plant physiology · 2024Article
- Temperature sensitivity of carbon concentrating mechanisms in the diatom Phaeodactylum tricornutum.Photosynthesis research · 2023Article
- Elucidation and genetic intervention of COJournal of biosciences · 2020Article
- Regulation of Carbon Metabolism by Environmental Conditions: A Perspective From Diatoms and Other Chromalveolates.Frontiers in plant science · 2020Review
- Mechanisms of carbon dioxide acquisition and COPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017Review
- Evolutionarily distinct strategies for the acquisition of inorganic carbon from seawater in marine diatoms.Journal of experimental botany · 2017Article
- Light and CO2/cAMP Signal Cross Talk on the Promoter Elements of Chloroplastic β-Carbonic Anhydrase Genes in the Marine Diatom Phaeodactylum tricornutum.Plant physiology · 2016Article
- A chloroplast pump model for the CO2 concentrating mechanism in the diatom Phaeodactylum tricornutum.Photosynthesis research · 2014Article
- Identification of G protein-coupled receptor signaling pathway proteins in marine diatoms using comparative genomics.BMC genomics · 2013Article
- Redox regulation of carbonic anhydrases via thioredoxin in chloroplast of the marine diatom Phaeodactylum tricornutum.The Journal of biological chemistry · 2012Article
- CO(2)-cAMP-responsive cis-elements targeted by a transcription factor with CREB/ATF-like basic zipper domain in the marine diatom Phaeodactylum tricornutum.Plant physiology · 2012Article
- Recent progresses on the genetic basis of the regulation of CO2 acquisition systems in response to CO2 concentration.Photosynthesis research · 2011Review
- Digital expression profiling of novel diatom transcripts provides insight into their biological functions.Genome biology · 2010Article
- Article
- A model for carbohydrate metabolism in the diatom Phaeodactylum tricornutum deduced from comparative whole genome analysis.PloS one · 2008Article
- Acclimation to singlet oxygen stress in Chlamydomonas reinhardtii.Eukaryotic cell · 2007Article
- Sensing of Elevating CO(2) in a Marine Diatom: Molecular Mechanisms and Implications.Plant signaling & behavior · 2007Article
- Carbon acquisition by diatoms.Photosynthesis researchReview
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
Marine diatoms are known to be responsible for about a quarter of global primary production and their photosynthesis is sustained by inorganic carbon-concentrating mechanisms and/or C(4) metabolism. Activities of the inorganic carbon-concentrating mechanism are attenuated under enriched [CO(2)]; however, impacts of this factor on primary productivity and the molecular mechanisms of CO(2) responses in marine diatoms are unknown. In this study, transgenic cells were generated of the marine diatom Phaeodactylum tricornutum by the introduction of a beta-glucuronidase reporter gene under the control of an intrinsic CO(2)-responsive promoter, which is the sequence between -80 to +61 relative to the transcription start site of a chloroplastic-carbonic anhydrase gene, ptca1, obtained from P. tricornutum. The activity of the ptca1 promoter was effectively repressed in air-level CO(2) by treating cells with a 1.0 mm cAMP analog, dibutyryl cAMP, or a cAMP phosphodiesterase inhibitor, 3-isobutyl-1-methylxanthine. Deletion of the intrinsic cAMP-response element from the ptca1 promoter caused a lack of repression of the reporter gene uidA, even under elevated [CO(2)] and a null phenotype to the strong repressive effects of dibutyryl cAMP and 3-isobutyl-1-methylxanthine on the ptca1 promoter. Deletion of the cAMP-response element was also shown to cause derepression of the uidA reporter gene in the dark. These results indicate that the cytosolic cAMP level increases under elevated [CO(2)] and represses the ptca1 promoter. This strongly suggests the participation of cAMP metabolism, presumably at the cytosolic level, in controlling CO(2)-acquisition systems under elevated [CO(2)] at the ocean surface in a marine diatom.
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Registered trials
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