Is Photosynthesis‐Derived NADPH Really a Source of ²H‐Depleted Hydrogen in Plant Compounds?

Creators: Holloway‐Phillips, Meisha¹; Tcherkez, Guillaume^{2, 3}; Wieloch, Thomas^{4, 5}; Lehmann, Marco M.¹; Werner, Roland A.⁶

1. Swiss Federal Institute for Forest, Snow and Landscape Research
2. Australian National University
3. Research Institute of Horticulture and Seeds
4. Umeå Plant Science Centre
5. California Institute of Technology
6. ETH Zurich

Abstract

We provide evidence that photosynthetically produced NADPH is not the major source of ²H-depletion in carbohydrates.

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Acknowledgement

This work was supported by funding from the Swiss National Science Foundation grant 179978 (awarded to M.M.L.) and 205492 (awarded to M.M.L. which employed M.H.-P), and Formas—a Swedish Research Council for Sustainable Development grant 2022-02833 (awarded to T.W.). Many thanks to the reviewers whose constructive feedback and insights greatly improved the accessibility and accuracy of the manuscript. Thanks also to Prof. Steve Kelly for discussions on enzyme activity and distributions in C₄ species.

Conflict of Interest

Guillaume Tcherkez is an Editorial Board member of Plant, Cell & Environment and a co-author of this article. To minimize bias, they were excluded from all editorial decision-making related to the acceptance of this article for publication.

Supplemental Material

Supporting information: pce15403-sup-0001-Supplementary_Figures_submission1.docx

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