Circadian Rhythm of the Prokaryote Synechococcus sp. RF-1.

@article{Huang1990CircadianRO,
  title={Circadian Rhythm of the Prokaryote Synechococcus sp. RF-1.},
  author={T. C. Huang and Jenny Tu and T. J. Chow and T. H. H. Chen},
  journal={Plant physiology},
  year={1990},
  volume={92 2},
  pages={
          531-3
        }
}
The prokaryotic Synechococcus sp. RF-1 exhibited a nitrogen fixation circadian rhythm with characteristics remarkably similar to the circadian rhythm of eukaryotes. The rhythm had a free-running period of about 24 hours when the length of the preen-trained cycle did not differ too much from 24 hours, and it was insensitive to changes in temperature from 22 degrees C to 33 degrees C. Because the endogenous rhythm of nitrogen fixation was not affected by a phase-shift of its previous cycles, the… Expand
Biological clock in the prokaryote Synechococcus RF-1
TLDR
The prokaryote Synechococcus RF-1 exhibits circadian rhythms of nitrogen fixation and leucine uptake after being entrained in a diurnal light/dark regimen, and a “clock” consisting of a molecular complex which can respond differentially to different induction conditions is hypothesized. Expand
Circadian Rhythm of Cyanothece RF-1(Synechococcus RF-1)
Cyanothece RF-1 (Synechococcus RF-1) is a unicellular N2-fixing cyano-bacterium isolated from a rice field in Taiwan. The activity of nitrogen fixation in RF-1 revealed circadian rhythms when theExpand
Circadian rhythm mutants of the prokaryoticSynechococcus RF-1
TLDR
Synechococcus RF-1 established circadian rhythms in nitrogen fixation and leucine uptake when growing in a diurnal light/dark regimen and persisted in subsequent uniform light/light conditions, and mutants were induced by N-methyl-N′-nitro-N-nitrosoguanidine and isolated by procedures with the circadian nitrogen-fixing rhythm as a selecton marker. Expand
The itty-bitty time machine genetics of the cyanobacterial circadian clock.
TLDR
Undoubtedly, continued genetic and mutational analyses of this single-celled cyanobacterium will aid in teasing out the intricacies of the Kai-based circadian clock to advance the understanding of this system as well as other more "complex" systems. Expand
CYANOBACTERIAL CIRCADIAN RHYTHMS.
TLDR
The promise of cyanobacteria as simple models for elucidating the biological clock mechanism is being fulfilled, as mutants affected in period, rhythm generation, and rhythm amplitude, isolated through the use of real time reporters of gene expression, have implicated genes involved in these aspects of the clock. Expand
Circadian Rhythm in Amino Acid Uptake by Synechococcus RF-1.
TLDR
In the prokaryote Synechococcus RF-1, circadian changes in the uptake of l-leucine and 2-amino isobutyric acid were observed and theperiodicity of the rhythm was not affected by the introduction of 25 mm NaNO(3). Expand
The circadian clock in the prokaryote Synechococcus RF-1
TLDR
The prokaryote is structurally and functionally simpler than the eukaryote and therefore it is potentially a useful model system for studying the control mechanism of circadian rhythms, and the physiological properties of circadian rhythm have been well characterized. Expand
Principles of rhythmicity emerging from cyanobacteria
  • S. Golden
  • Medicine, Biology
  • The European journal of neuroscience
  • 2019
TLDR
The lessons learned from the S. elongatus clock underscore the power of genetics to reveal mechanisms whose natures are not known a priori, and speak to the value of collaboration to apply diverse skillsets to solve difficult biological problems. Expand
Effect of Oxygen and Temperature on the Induction of a Circadian Nitrogenase Activity Rhythm in Synechococcus RF-1
TLDR
Evidence is presented that the periodic cessation of photosynthetic CO 2 assimilation rather than O 2 evolution appears to induce an endogenous nitrogenase activity rhythm in Synechococcus RF-1, which is unable to survive exposure to -5 °C for a few hours. Expand
A cyanobacterial circadian timing mechanism.
TLDR
The mechanism of the cyanobacterial circadian clock that is emerging is based principally on the assembly and disassembly of a large complex at whose heart are the proteins KaiA, KaiB, and KaiC, which employ protein domains that are similar to those in two-component regulatory systems of bacteria. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 14 REFERENCES
A CIRCADIAN RHYTHM IN CELL DIVISION IN A PROKARYOTE, THE CYANOBACTERIUM SYNECHOCOCCUS WH7803 1
TLDR
It is reported here a clearcut circadian rhythm in cell division in a marine Synechococcus sp. Expand
Dinitrogen-fixing endogenous rhythm in Synechococcus RF-1
TLDR
Under continuous illumination this unicellular aerobic cyanobacterium fixes dinitrogen continuously at a variable and usually low rate, which appears to be the first record of an endogenous rhythm in a prokaryote. Expand
Biological Rhythms and Physiological Timing
TLDR
This chapter deals either with circadian rhythms, those in which the free-running period (under constant conditions) is of the order of 24 hr, or with others that may be related. Expand
ON THE MECHANISM OF TEMPERATURE INDEPENDENCE IN A BIOLOGICAL CLOCK.
  • J. W. Hastings, B. Sweeney
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1957
TLDR
Temperature independence constitutes support for the idea that a diurnal rhythm could be related to an accurate biological timing device, or clock, and if, in fact, the rhythms are related to a chronometer mechanism, the significance of temperature independence is clear. Expand
Strategy by which nitrogen-fixing unicellular cyanobacteria grow photoautotrophically
TLDR
Novel strains of aerobic nitrogen-fixing, unicellular marine cyanobacteria, Synechococcus spp. Expand
Endocytobiotic Coordination, Intracellular Calcium Signaling, and the Origin of Endogenous Rhythms
  • F. Kippert
  • Chemistry, Medicine
  • Annals of the New York Academy of Sciences
  • 1987
TLDR
The endosymbiotic theory may not only account for the origin of mitochondria and plastids but equally for a substantial part of the developmental potency arising in conjunction with the first eukaryotic organisms. Expand
New type of N2-fixing unicellular cyanobacterium (blue-green alga)
A new N2-fixing unicellular cyanobacterium identified as a Synechococcus sp. was isolated and purified as an axenic culture. It fixed N2 aerobically either under continuous illumination or inExpand
Acetylene reduction by nitrogen-fixing preparations from Clostridium pasteurianum.
  • M. Dilworth
  • Chemistry, Medicine
  • Biochimica et biophysica acta
  • 1966
TLDR
It is suggested that the first step in N 2 reduction is a two-electron reduction leading to a non-dissociable intermediate at the oxidation level of diimide. Expand
Circadian Rhythms and Metabolic Patterns
INTRODUCTION 1 16 CIRCADIAN METABOLIC RHYTHMS ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 1 16 Background Considerations .... ..... '. . . . . . . . . . . . .Expand
Protein measurement with the Folin phenol reagent.
TLDR
Procedures are described for measuring protein in solution or after precipitation with acids or other agents, and for the determination of as little as 0.2 gamma of protein. Expand
...
1
2
...