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Phosphorylation of plasma membrane H+-ATPase Thr881 participates in light-induced stomatal opening

Author

Listed:
  • Yuki Hayashi

    (Nagoya University)

  • Kohei Fukatsu

    (Nagoya University)

  • Koji Takahashi

    (Nagoya University
    Nagoya University)

  • Satoru N. Kinoshita

    (Nagoya University)

  • Kyohei Kato

    (Nagoya University)

  • Taku Sakakibara

    (Nagoya University)

  • Keiko Kuwata

    (Nagoya University)

  • Toshinori Kinoshita

    (Nagoya University
    Nagoya University)

Abstract

Plasma membrane (PM) H+-ATPase is crucial for light-induced stomatal opening and phosphorylation of a penultimate residue, Thr948 (pen-Thr, numbering according to Arabidopsis AHA1) is required for enzyme activation. In this study, a comprehensive phosphoproteomic analysis using guard cell protoplasts from Vicia faba shows that both red and blue light increase the phosphorylation of Thr881, of PM H+-ATPase. Light-induced stomatal opening and the blue light-induced increase in stomatal conductance are reduced in transgenic Arabidopsis plants expressing mutant AHA1-T881A in aha1–9, whereas the blue light-induced phosphorylation of pen-Thr is unaffected. Auxin and photosynthetically active radiation induce the phosphorylation of both Thr881 and pen-Thr in etiolated seedlings and leaves, respectively. The dephosphorylation of phosphorylated Thr881 and pen-Thr are mediated by type 2 C protein phosphatase clade D isoforms. Taken together, Thr881 phosphorylation, in addition of the pen-Thr phosphorylation, are important for PM H+-ATPase function during physiological responses, such as light-induced stomatal opening in Arabidopsis thaliana.

Suggested Citation

  • Yuki Hayashi & Kohei Fukatsu & Koji Takahashi & Satoru N. Kinoshita & Kyohei Kato & Taku Sakakibara & Keiko Kuwata & Toshinori Kinoshita, 2024. "Phosphorylation of plasma membrane H+-ATPase Thr881 participates in light-induced stomatal opening," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45248-5
    DOI: 10.1038/s41467-024-45248-5
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    References listed on IDEAS

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    1. Maoxing Zhang & Yin Wang & Xi Chen & Feiyun Xu & Ming Ding & Wenxiu Ye & Yuya Kawai & Yosuke Toda & Yuki Hayashi & Takamasa Suzuki & Houqing Zeng & Liang Xiao & Xin Xiao & Jin Xu & Shiwei Guo & Feng Y, 2021. "Plasma membrane H+-ATPase overexpression increases rice yield via simultaneous enhancement of nutrient uptake and photosynthesis," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    2. Toshinori Kinoshita & Michio Doi & Noriyuki Suetsugu & Takatoshi Kagawa & Masamitsu Wada & Ken-ichiro Shimazaki, 2001. "phot1 and phot2 mediate blue light regulation of stomatal opening," Nature, Nature, vol. 414(6864), pages 656-660, December.
    3. Murukarthick Jayakodi & Agnieszka A. Golicz & Jonathan Kreplak & Lavinia I. Fechete & Deepti Angra & Petr Bednář & Elesandro Bornhofen & Hailin Zhang & Raphaël Boussageon & Sukhjiwan Kaur & Kwok Cheun, 2023. "The giant diploid faba genome unlocks variation in a global protein crop," Nature, Nature, vol. 615(7953), pages 652-659, March.
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