Evidence map›Paper›PMID 19218364›Full record

ArticlePlant physiology2009

CIRCADIAN CLOCK ASSOCIATED1 and LATE ELONGATED HYPOCOTYL function synergistically in the circadian clock of Arabidopsis.

Sheen X Lu, Stephen M Knowles, Christos Andronis, May S Ong, Elaine M Tobin

Open access · hybridAbstract read
In one paragraph

Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers.

0numbers the graph read from it
0cells of the map it votes in
116citing papers in PubMed
15.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

116 citing papers in PubMed, 235 citations in OpenAlex.

  1. Article
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  4. Review
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  6. Review
  7. Review
  8. Clock protein LHY targetsScience advances · 2024
    Article
  9. Article
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  11. Article
  12. Review
  13. Light controls mesophyll-specific post-transcriptional splicing of photoregulatory genes by AtPRMT5.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  14. Article
  15. Article
  16. Review
  17. Review
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  20. Article

56 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Sheen X LuDepartment of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, California 90095.
Stephen M Knowles
Christos Andronis
May S Ong
Elaine M Tobin
University of California, Los Angeles · US

Funding

Understanding the basis of circadian rhythms in the model system ArabidopsisR01GM023167 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI TOBIN, ELAINE MUNSEY · 1985 to 2010
$4.0M
NIGMS NIH HHS GM23167NIGMS NIH HHS R01 GM023167
6 · The paper itself

Abstract

The circadian clock is an endogenous mechanism that coordinates biological processes with daily and seasonal changes in the environment. Heterodimerization of central clock components is an important way of controlling clock function in several different circadian systems. CIRCADIAN CLOCK ASSOCIATED1 (CCA1) and LATE ELONGATED HYPOCOTYL (LHY) are Myb-related proteins that function in or close to the central oscillator in Arabidopsis (Arabidopsis thaliana). Single mutants of cca1 and lhy have a phenotype of short-period rhythms. cca1 lhy double mutants show an even shorter period phenotype than the cca1 single mutant, suggesting that CCA1 and LHY are only partially functionally redundant. To determine whether CCA1 and LHY act in parallel or synergistically in the circadian clock, we examined their expression in both light-grown and etiolated seedlings. We have shown that LHY and CCA1 bind to the same region of the promoter of a Light-harvesting chlorophyll a/b protein (Lhcb, also known as CAB). CCA1 and LHY can form homodimers, and they also colocalize in the nucleus and heterodimerize in vitro and in vivo. In Arabidopsis, CCA1 and LHY physically interact in a manner independent of photoperiod. Moreover, results from gel filtration chromatography indicate that CCA1 and LHY are present in the same large complex in plants. Taken together, these results imply that CCA1 and LHY function synergistically in regulating circadian rhythms of Arabidopsis.

Indexed as

ArabidopsisArabidopsis ProteinsBase SequenceBiological ClocksCell NucleusChlorophyll Binding ProteinsCircadian RhythmDNA-Binding ProteinsGene Expression Regulation, PlantLight-Harvesting Protein ComplexesMolecular Sequence DataMutationPhenotypePhotosystem I Protein ComplexPromoter Regions, GeneticProtein BindingArabidopsis ProteinsCCA1 protein, ArabidopsisChlorophyll Binding ProteinsDNA-Binding ProteinsLHY protein, ArabidopsisLight-Harvesting Protein ComplexesPhotosystem I Protein ComplexTranscription Factors

Identifiers

PMID19218364
PMCPMC2689956
OpenAlexW2146720068

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.