ArticleProceedings of the National Academy of Sciences of the United States of America2015
Detecting long-term metabolic shifts using isotopomers: CO2-driven suppression of photorespiration in C3 plants over the 20th century.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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23 citing papers in PubMed, 114 citations in OpenAlex.
- Intra-annual transfer of hydrogen and oxygen isotopic signals from water and sugar precursors to tree rings: Processes and mechanisms.The New phytologist · 2026Article
- An Efficient Solid Phase Extraction Method for Purification and Analysis of Compound-Specific Plant Sugar Stable Hydrogen Isotope Values.Rapid communications in mass spectrometry : RCM · 2026Article
- Centennial-scale atmospheric COThe New phytologist · 2025Article
- Review
- Isotopic clumping in wood as a proxy for photorespiration in trees.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- The enhancement of photosynthetic performance, water use efficiency and potato yield under elevated COFrontiers in plant science · 2023Article
- High atmospheric COThe New phytologist · 2022Article
- Anaplerotic flux into the Calvin-Benson cycle: hydrogen isotope evidence for in vivo occurrence in CThe New phytologist · 2022Article
- Metabolism is a major driver of hydrogen isotope fractionation recorded in tree-ring glucose of Pinus nigra.The New phytologist · 2022Article
- COProceedings of the National Academy of Sciences of the United States of America · 2022Article
- A high-temperature water vapor equilibration method to determine non-exchangeable hydrogen isotope ratios of sugar, starch and cellulose.Plant, cell & environment · 2022Article
- Global COScientific reports · 2021Article
- Article
- Improving the Rice Photosynthetic Efficiency and Yield by EditingInternational journal of molecular sciences · 2021Article
- Biotechnological strategies for improved photosynthesis in a future of elevated atmospheric COPlanta · 2019Review
- Influence of starch deficiency on photosynthetic and post-photosynthetic carbon isotope fractionations.Journal of experimental botany · 2019Article
- Decadal biomass increment in early secondary succession woody ecosystems is increased by CONature communications · 2019Article
- Article
- Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in WoundedFrontiers in plant science · 2019Article
- Growth at Elevated COPlant physiology · 2018Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Terrestrial vegetation currently absorbs approximately a third of anthropogenic CO2 emissions, mitigating the rise of atmospheric CO2. However, terrestrial net primary production is highly sensitive to atmospheric CO2 levels and associated climatic changes. In C3 plants, which dominate terrestrial vegetation, net photosynthesis depends on the ratio between photorespiration and gross photosynthesis. This metabolic flux ratio depends strongly on CO2 levels, but changes in this ratio over the past CO2 rise have not been analyzed experimentally. Combining CO2 manipulation experiments and deuterium NMR, we first establish that the intramolecular deuterium distribution (deuterium isotopomers) of photosynthetic C3 glucose contains a signal of the photorespiration/photosynthesis ratio. By tracing this isotopomer signal in herbarium samples of natural C3 vascular plant species, crops, and a Sphagnum moss species, we detect a consistent reduction in the photorespiration/photosynthesis ratio in response to the ∼100-ppm CO2 increase between ∼1900 and 2013. No difference was detected in the isotopomer trends between beet sugar samples covering the 20th century and CO2 manipulation experiments, suggesting that photosynthetic metabolism in sugar beet has not acclimated to increasing CO2 over >100 y. This provides observational evidence that the reduction of the photorespiration/photosynthesis ratio was ca. 25%. The Sphagnum results are consistent with the observed positive correlations between peat accumulation rates and photosynthetic rates over the Northern Hemisphere. Our results establish that isotopomers of plant archives contain metabolic information covering centuries. Our data provide direct quantitative information on the "CO2 fertilization" effect over decades, thus addressing a major uncertainty in Earth system models.
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