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Growth in fluctuating light buffers plants against photorespiratory perturbations

Author

Listed:
  • Thekla von Bismarck

    (Molecular Photosynthesis, Heinrich-Heine-University Düsseldorf
    Heinrich Heine University Düsseldorf
    Max Planck Institute of Molecular Plant Physiology)

  • Philipp Wendering

    (Max Planck Institute of Molecular Plant Physiology
    University of Potsdam)

  • Leonardo Perez de Souza

    (Max Planck Institute of Molecular Plant Physiology)

  • Jeremy Ruß

    (Max Planck Institute of Molecular Plant Physiology)

  • Linnéa Strandberg

    (Max Planck Institute of Molecular Plant Physiology)

  • Elmien Heyneke

    (Max Planck Institute of Molecular Plant Physiology)

  • Berkley J. Walker

    (Michigan State University
    Michigan State University)

  • Mark A. Schöttler

    (Max Planck Institute of Molecular Plant Physiology)

  • Alisdair R. Fernie

    (Max Planck Institute of Molecular Plant Physiology)

  • Zoran Nikoloski

    (Max Planck Institute of Molecular Plant Physiology
    University of Potsdam)

  • Ute Armbruster

    (Molecular Photosynthesis, Heinrich-Heine-University Düsseldorf
    Heinrich Heine University Düsseldorf
    Max Planck Institute of Molecular Plant Physiology)

Abstract

Photorespiration (PR) is the pathway that detoxifies the product of the oxygenation reaction of Rubisco. It has been hypothesized that in dynamic light environments, PR provides a photoprotective function. To test this hypothesis, we characterized plants with varying PR enzyme activities under fluctuating and non-fluctuating light conditions. Contrasting our expectations, growth of mutants with decreased PR enzyme levels was least affected in fluctuating light compared with wild type. Results for growth, photosynthesis and metabolites combined with thermodynamics-based flux analysis revealed two main causal factors for this unanticipated finding: reduced rates of photosynthesis in fluctuating light and complex re-routing of metabolic fluxes. Only in non-fluctuating light, mutants lacking the glutamate:glyoxylate aminotransferase 1 re-routed glycolate processing to the chloroplast, resulting in photooxidative damage through H2O2 production. Our results reveal that dynamic light environments buffer plant growth and metabolism against photorespiratory perturbations.

Suggested Citation

  • Thekla von Bismarck & Philipp Wendering & Leonardo Perez de Souza & Jeremy Ruß & Linnéa Strandberg & Elmien Heyneke & Berkley J. Walker & Mark A. Schöttler & Alisdair R. Fernie & Zoran Nikoloski & Ute, 2023. "Growth in fluctuating light buffers plants against photorespiratory perturbations," Nature Communications, Nature, vol. 14(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42648-x
    DOI: 10.1038/s41467-023-42648-x
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    References listed on IDEAS

    as
    1. Ute Armbruster & L. Ruby Carrillo & Kees Venema & Lazar Pavlovic & Elisabeth Schmidtmann & Ari Kornfeld & Peter Jahns & Joseph A. Berry & David M. Kramer & Martin C. Jonikas, 2014. "Ion antiport accelerates photosynthetic acclimation in fluctuating light environments," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
    2. Stéphane Bellafiore & Frédy Barneche & Gilles Peltier & Jean-David Rochaix, 2005. "State transitions and light adaptation require chloroplast thylakoid protein kinase STN7," Nature, Nature, vol. 433(7028), pages 892-895, February.
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