The physiology of circadian rhythms in plants.

@article{Webb2003ThePO,
  title={The physiology of circadian rhythms in plants.},
  author={Alex A. R. Webb},
  journal={The New phytologist},
  year={2003},
  volume={160 2},
  pages={
          281-303
        }
}
  • A. Webb
  • Published 1 November 2003
  • Biology, Environmental Science
  • The New phytologist
Circadian rhythms regulate many aspects of plant physiology including leaf, organ and stomatal movements, growth and signalling. The genetic identity of some of the components of the core circadian oscillator has recently become known. Similarly, the photoperception and phototransduction pathways that entrain the oscillator to the day and night cycle are being determined. Less clear are the pathways by which the circadian oscillator regulates cellular physiology. Circadian oscillations in… 
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References

SHOWING 1-10 OF 124 REFERENCES
Biological clocks in Arabidopsis thaliana.
  • A. Millar
  • Environmental Science, Biology
    The New phytologist
  • 1999
TLDR
Components of the first plant circadian output pathway to be identified unequivocally will help to determine exactly how many output pathways control the various phases of overt rhythms in plants.
Circadian Rhythms Confer a Higher Level of Fitness to Arabidopsis Plants1
TLDR
It is demonstrated that CCA1-ox plants retain the ability to respond to diurnal changes in light, and two other circadian rhythm mutants, LHY-ox and elf3, have low-viability phenotypes.
The ELF3 zeitnehmer regulates light signalling to the circadian clock
TLDR
ELF3 specifically affects light input to the oscillator, similar to its function in gating CAB activation, allowing oscillator progression past a light-sensitive phase in the subjective evening, providing experimental demonstration of the zeitnehmer (‘time-taker’) concept.
The ELF4 gene controls circadian rhythms and flowering time in Arabidopsis thaliana
TLDR
The gene EARLY FLOWERING 4 (ELF4), which is involved in photoperiod perception and circadian regulation, is described, which promotes clock accuracy and is required for sustained rhythms in the absence of daily light/dark cycles.
Endogenous timekeepers in photosynthetic organisms.
  • C. Johnson
  • Biology, Environmental Science
    Annual review of physiology
  • 2001
TLDR
Genes have now been isolated from plants that are likely to encode components of the central clockwork or at least that act very close to the central mechanism.
The Circadian Clock That Controls Gene Expression in Arabidopsis Is Tissue Specific1
TLDR
The proposal that spatially separated copies of the plant circadian clock are at most weakly coupled, if not functionally independent, has apparently permitted tissue-specific specialization of circadian timing is supported.
Biological rhythms and photoperiodism in plants
TLDR
A clockwork green: circadian rhythms in photosynthetic organisms, developmental processes in insects, and photoperiodism in the blow fly, calliphora vicina.
The short-period mutant, toc1-1, alters circadian clock regulation of multiple outputs throughout development in Arabidopsis thaliana.
TLDR
A new set of circadian clock-controlled phenotypes for Arabidopsis thaliana are reported, consistent with the likelihood that TOC1 codes for an oscillator component rather than for an element of an input signaling pathway, and indicate that T OC1 acts on or within the clock independently of light input.
Critical Role for CCA1 and LHY in Maintaining Circadian Rhythmicity in Arabidopsis
Circadian dysfunction causes aberrant hypocotyl elongation patterns in Arabidopsis.
TLDR
It is demonstrated that the circadian clock controls the elongation of the Arabidopsis hypocotyl immediately upon germination, indicating that it is controlled by a similar circadian system to other rhythmic markers.
...
1
2
3
4
5
...