ArticlePlant physiology2022
True oxygen reduction capacity during photosynthetic electron transfer in thylakoids and intact leaves.
Article in Plant physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 35 citations in OpenAlex.
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- Topping influences crop photosynthesis and alters the absorption and redistribution of nutrients: a case study of tobacco.Frontiers in plant science · 2025Article
- Hypericum Perforatum-Derived Exosomes-Like Nanovesicles: A Novel Natural Photosensitizer for Effective Tumor Photodynamic Therapy.International journal of nanomedicine · 2025Article
- Differential FeS cluster photodamage plays a critical role in regulating excess electron flow through photosystem I.Nature plants · 2024Article
- Measurement of OMethods in molecular biology (Clifton, N.J.) · 2024Article
- Measurements of Oxygen Evolution in Photosynthesis.Methods in molecular biology (Clifton, N.J.) · 2024Article
- PSI Photoinhibition and Changing COAntioxidants (Basel, Switzerland) · 2023Article
- How do barley plants with impaired photosynthetic light acclimation survive under high-light stress?Planta · 2023Article
- Honoring two stalwarts of photosynthesis research: Eva-Mari Aro and Govindjee.Photosynthesis research · 2023Article
- Flavodiiron-mediated ONature communications · 2023Article
- Plants acclimate to Photosystem I photoinhibition by readjusting the photosynthetic machinery.Plant, cell & environment · 2022Article
- ROS production and signalling in chloroplasts: cornerstones and evolving concepts.The Plant journal : for cell and molecular biology · 2022Review
- A Mitochondrially Related Plastidial Transporter Regulates Photosynthesis in the Diatom Phaeodactylum tricornutum.Physiologia plantarumArticle
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Reactive oxygen species (ROS) are generated in electron transport processes of living organisms in oxygenic environments. Chloroplasts are plant bioenergetics hubs where imbalances between photosynthetic inputs and outputs drive ROS generation upon changing environmental conditions. Plants have harnessed various site-specific thylakoid membrane ROS products into environmental sensory signals. Our current understanding of ROS production in thylakoids suggests that oxygen (O2) reduction takes place at numerous components of the photosynthetic electron transfer chain (PETC). To refine models of site-specific O2 reduction capacity of various PETC components in isolated thylakoids of Arabidopsis thaliana, we quantified the stoichiometry of oxygen production and consumption reactions associated with hydrogen peroxide (H2O2) accumulation using membrane inlet mass spectrometry and specific inhibitors. Combined with P700 spectroscopy and electron paramagnetic resonance spin trapping, we demonstrate that electron flow to photosystem I (PSI) is essential for H2O2 accumulation during the photosynthetic linear electron transport process. Further leaf disc measurements provided clues that H2O2 from PETC has a potential of increasing mitochondrial respiration and CO2 release. Based on gas exchange analyses in control, site-specific inhibitor-, methyl viologen-, and catalase-treated thylakoids, we provide compelling evidence of no contribution of plastoquinone pool or cytochrome b6f to chloroplastic H2O2 accumulation. The putative production of H2O2 in any PETC location other than PSI is rapidly quenched and therefore cannot function in H2O2 translocation to another cellular location or in signaling.
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