Evidence map›Paper›PMID 20926618›Full record

ArticlePlant physiology2010

A gain-of-function mutation of Arabidopsis cryptochrome1 promotes flowering.

Vivien Exner, Cristina Alexandre, Gesa Rosenfeldt, Pietro Alfarano, Mena Nater, Amedeo Caflisch, Wilhelm Gruissem, Alfred Batschauer, Lars Hennig

Open access · hybridAbstract read
In one paragraph

Article in Plant physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.3field-weighted citation impact, top 8% 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

26 citing papers in PubMed, 49 citations in OpenAlex.

  1. Blue Light Receptor PHR2-Mediated Spectrum Antiviral Immunity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Signaling Mechanisms by Arabidopsis Cryptochromes.Frontiers in plant science · 2022
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Hyperactivity of theThe Journal of biological chemistry · 2017
    Article
  14. Article
  15. Review
  16. Arabidopsis cryptochrome 1 functions in nitrogen regulation of flowering.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  17. Article
  18. Review
  19. Plant flavoprotein photoreceptors.Plant & cell physiology · 2015
    Review
  20. Article
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

9 authors at 2 institutions in 2 countries.

Vivien ExnerDepartment of Biology and Zurich-Basel Plant Science Center, Eidgenössisch Technische Hochschule Zurich, 8129 Zurich, Switzerland.
Cristina Alexandre
Gesa Rosenfeldt
Pietro Alfarano
Mena Nater
Amedeo Caflisch
Wilhelm Gruissem
Alfred Batschauer
Lars Hennig
University of Zurich · CHSwedish University of Agricultural Sciences · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Plants use different classes of photoreceptors to collect information about their light environment. Cryptochromes are blue light photoreceptors that control deetiolation, entrain the circadian clock, and are involved in flowering time control. Here, we describe the cry1-L407F allele of Arabidopsis (Arabidopsis thaliana), which encodes a hypersensitive cryptochrome1 (cry1) protein. Plants carrying the cry1-L407F point mutation have elevated expression of CONSTANS and FLOWERING LOCUS T under short-day conditions, leading to very early flowering. These results demonstrate that not only the well-studied cry2, with an unequivocal role in flowering promotion, but also cry1 can function as an activator of the floral transition. The cry1-L407F mutants are also hypersensitive toward blue, red, and far-red light in hypocotyl growth inhibition. In addition, cry1-L407F seeds are hypersensitive to germination-inducing red light pulses, but the far-red reversibility of this response is not compromised. This demonstrates that the cry1-L407F photoreceptor can increase the sensitivity of phytochrome signaling cascades. Molecular dynamics simulation of wild-type and mutant cry1 proteins indicated that the L407F mutation considerably reduces the structural flexibility of two solvent-exposed regions of the protein, suggesting that the hypersensitivity might result from a reduced entropic penalty of binding events during downstream signal transduction. Other nonmutually exclusive potential reasons for the cry1-L407F gain of function are the location of phenylalanine-407 close to three conserved tryptophans, which could change cry1's photochemical properties, and stabilization of ATP binding, which could extend the lifetime of the signaling state of cry1.

Indexed as

FlowersPoint MutationAllelesAmino Acid SequenceArabidopsisArabidopsis ProteinsCryptochromesLightModels, MolecularMolecular Dynamics SimulationMolecular Sequence DataSequence Homology, Amino AcidArabidopsis ProteinsCRY1 protein, ArabidopsisCryptochromes

Identifiers

PMID20926618
PMCPMC2996009
OpenAlexW2104630820

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.