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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Photosynthesis and Photobiology
Volume 15 - 2024 | doi: 10.3389/fpls.2024.1322261
This article is part of the Research Topic Photosynthesis Under Abiotic Stress View all 3 articles

Rewiring of primary metabolism for ammonium recycling under short-term low CO2 treatmentits implication for C4 evolution

Provisionally accepted
Xinguang Zhu Xinguang Zhu 1,2*Fenfen Miao Fenfen Miao 2Noor Ul Haq Noor Ul Haq 3Ming-Ju A. Lyu Ming-Ju A. Lyu 4
  • 1 University of Chinese Academy of Sciences, Beijing, China
  • 2 Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences (CAS), Shanghai, Shanghai Municipality, China
  • 3 Khushal Khan Khattak University, Karak, Khyber Pakhtunkhwa, Pakistan
  • 4 National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences (CAS), Shanghai, China

The final, formatted version of the article will be published soon.

    Low CO2 is recognized as a major environmental condition under which C4 photosynthesis evolved. So far, most researchers thought that low CO2 acts mainly as a screening condition, under which plants with relatively low CO2 compensation point can gain competitive advantage. In this study, combining physiology, transcriptomics, and metabolomics data, we provide evidences that low CO2 also induce a change in the expression of genes related to C4 metabolism, hence providing a direct linkage between low CO2 as a signaling mechanism during the evolution of C4 photosynthesis. In nature conditions inducing low physiological CO2 levels such as drought and high temperature etc are widespread, therefore, regulation of genes related to C4 photosynthesis via physiological low CO2 might participate in plant acclimation under stresses.

    Keywords: MAL: Malate, OAA: Oxaloacetate, PenP: Pentose phosphate, PGA: 3-Phosphoglycerate, PYR: Pyruvate, RuBP: Ribulose 1,5-bisphosphate, S7P: Sedoeheptulose-7-phosphate, Ser: Serine

    Received: 16 Oct 2023; Accepted: 04 Jul 2024.

    Copyright: © 2024 Zhu, Miao, Haq and Lyu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Xinguang Zhu, University of Chinese Academy of Sciences, Beijing, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.