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Title: Carbon/Nitrogen Metabolic Balance: Lessons from Cyanobacteria

Journal Article · · Trends in Plant Science
 [1];  [2];  [3];  [4]
  1. Chinese Academy of Sciences (CAS), Wuhan (China); Aix-Marseille Univ., Marseille (France); DOE/OSTI
  2. Univ. of Science and Technology of China, Hefei (China)
  3. Oklahoma State Univ., Stillwater, OK (United States)
  4. Aix-Marseille Univ., Marseille (France)

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 oxygenase 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.

Research Organization:
Oklahoma State Univ., Stillwater, OK (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-08ER15968
OSTI ID:
1609961
Journal Information:
Trends in Plant Science, Journal Name: Trends in Plant Science Journal Issue: 12 Vol. 23; ISSN 1360-1385
Publisher:
Cell PressCopyright Statement
Country of Publication:
United States
Language:
English

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Interplay and Targetome of the Two Conserved Cyanobacterial sRNAs Yfr1 and Yfr2 in Prochlorococcus MED4 journal October 2019
Redox interference in nitrogen status via oxidative stress is mediated by 2‐oxoglutarate in cyanobacteria journal June 2019
Wasteful, essential, evolutionary stepping stone? The multiple personalities of the photorespiratory pathway journal February 2020
cyAbrB Transcriptional Regulators as Safety Devices To Inhibit Heterocyst Differentiation in Anabaena sp. Strain PCC 7120 journal May 2019
patD , a Gene Regulated by NtcA, Is Involved in the Optimization of Heterocyst Frequency in the Cyanobacterium Anabaena sp. Strain PCC 7120 journal November 2019
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