ArticleThe Plant cell2024
Alternative electron pathways of photosynthesis power green algal CO2 capture.
Article in The Plant cell, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Light-dependent processes in algae across scales: from cellular physiology to ecological organization.Plant physiology · 2026Review
- Effects of Photosynthesis Inhibitors on HPlants (Basel, Switzerland) · 2026Review
- Siphonous green macroalgae with contrasting capacities for the energy-dependent quenching, qE, rely on different photoprotective mechanisms.Photosynthesis research · 2026Article
- Probing the power grid of C4 plants: how the cyclic electron transport fuels and protects photosynthesis.Plant physiology · 2026Article
- Article
- Regulatory logic of theFrontiers in plant science · 2026Review
- Auxenochlorella: the green algal reference we've been waiting for.The Plant cell · 2025Article
- The green algae CONature communications · 2025Article
- The thylakoid- and pyrenoid-localized phosphate transporter PHT4-9 is essential for photosynthesis in Chlamydomonas.Plant physiology · 2025Article
- With a little help from ferredoxin-NADP+ reductase: Enhancing photosynthetic cyclic electron transfer around PSI.The Plant cell · 2025Article
- Photosynthetic Electron Flows and Networks of Metabolite Trafficking to Sustain Metabolism in Photosynthetic Systems.Plants (Basel, Switzerland) · 2024Review
- Lighting the way: Compelling open questions in photosynthesis research.The Plant cell · 2024Article
- Focus on photosynthesis.The Plant cell · 2024Article
- Off the beaten pathway: Powering carbon capture with alternative photosynthetic electron transfer pathways.The Plant cell · 2024Article
Corrections and comments
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Authors and funding
10 authors.
Funding
Abstract
Microalgae contribute to about half of global net photosynthesis, which converts sunlight into the chemical energy (ATP and NADPH) used to transform CO2 into biomass. Alternative electron pathways of photosynthesis have been proposed to generate additional ATP that is required to sustain CO2 fixation. However, the relative importance of each alternative pathway remains elusive. Here, we dissect and quantify the contribution of cyclic, pseudo-cyclic, and chloroplast-to-mitochondrion electron flows for their ability to sustain net photosynthesis in the microalga Chlamydomonas reinhardtii. We show that (i) each alternative pathway can provide sufficient additional energy to sustain high CO2 fixation rates, (ii) the alternative pathways exhibit cross-compensation, and (iii) the activity of at least one of the three alternative pathways is necessary to sustain photosynthesis. We further show that all pathways have very different efficiencies at energizing CO2 fixation, with the chloroplast-mitochondrion interaction being the most efficient. Overall, our data lay bioenergetic foundations for biotechnological strategies to improve CO2 capture and fixation.
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Registered trials
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