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Article Dans Une Revue Trends in Plant Science Année : 2018

Carbon/Nitrogen Metabolic Balance: Lessons from Cyanobacteria

Résumé

Carbon and nitrogen are the two most abundant nutrient elements for all living organisms, and their metabolism is tightly coupled. What are the signaling mechanisms that cells use to sense and control the carbon/nitrogen (C/N) metabolic balance following environmental changes? Based on studies in cyanobacteria, it was found that 2-phosphoglycolate derived from the oxygen-ase activity of Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase) and 2-oxoglutarate from the Krebs cycle act as the carbon-and nitrogen-starvation signals, respectively, and their concentration ratio likely reflects the status of the C/N metabolic balance. We will present and discuss the regulatory principles underlying the signaling mechanisms, which are likely to be conserved in other photosynthetic organisms. These concepts may also contribute to developments in the field of biofuel engineering or improvements in crop productivity.

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Bactériologie
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Dates et versions

hal-02992919 , version 1 (18-11-2020)

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Cheng-Cai Zhang, Cong-Zhao Zhou, Robert L Burnap, Ling Peng. Carbon/Nitrogen Metabolic Balance: Lessons from Cyanobacteria. Trends in Plant Science, 2018, 23 (12), pp.1116 - 1130. ⟨10.1016/j.tplants.2018.09.008⟩. ⟨hal-02992919⟩
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