Evidence map›Paper›PMID 21803861›Full record

ArticlePlant physiology2011

Adenosine kinase contributes to cytokinin interconversion in Arabidopsis.

Sarah Schoor, Scott Farrow, Hanna Blaschke, Sanghyun Lee, Gregory Perry, Klaus von Schwartzenberg, Neil Emery, Barbara Moffatt

Abstract read
In one paragraph

Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

31 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Five unaddressed questions about cytokinin biosynthesis.Journal of experimental botany · 2025
    Review
  7. A cell wall-localized cytokinin/purine riboside nucleosidase is involved in apoplastic cytokinin metabolism inProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Relationship between the Phenylpropanoid Pathway and Dwarfism ofInternational journal of molecular sciences · 2021
    Article
  12. Review
  13. Review
  14. Nucleotide Metabolism in Plants.Plant physiology · 2020
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Cytokinin Metabolism of Pathogenic FungusFrontiers in microbiology · 2017
    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

8 authors.

Sarah SchoorDepartment of Biology, University of Waterloo, Waterloo, Ontario, Canada N2L3G1.
Scott Farrow
Hanna Blaschke
Sanghyun Lee
Gregory Perry
Klaus von Schwartzenberg
Neil Emery
Barbara Moffatt

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purine salvage enzymes have been implicated, but not proven, to be involved in the interconversion of cytokinin (CK) bases, ribosides, and nucleotides. Here, we use Arabidopsis (Arabidopsis thaliana) lines silenced in adenosine kinase (ADK) expression to understand the contributions of this enzyme activity to in vivo CK metabolism. Both small interfering RNA- and artificial microRNA-mediated silencing of ADK led to impaired root growth, small, crinkled rosette leaves, and reduced apical dominance. Further examination of ADK-deficient roots and leaves revealed their irregular cell division. Root tips had uneven arrangements of root cap cells, reduced meristem sizes, and enlarged cells in the elongation zone; rosette leaves exhibited decreased cell size but increased cell abundance. Expression patterns of the cyclinB1;1::β-glucuronidase and Arabidopsis Response Regulator5::β-glucuronidase reporters in the ADK-deficient background were consistent with altered cell division and an increase in CK activity, respectively. In vivo feeding of ADK-deficient leaves with radiolabeled CK ribosides of isopentenyladenosine and zeatin showed a decreased flux into the corresponding CK nucleotides. Comprehensive high-performance liquid chromatography-tandem mass spectrometry analysis detected significantly higher levels of active CK ribosides in both sense ADK and artificial microADK. Taken together, these metabolic and phenotypic analyses of ADK-deficient lines indicate that ADK contributes to CK homeostasis in vivo.

Indexed as

Adenosine KinaseArabidopsisArabidopsis ProteinsCyclin B1CytokininsDNA-Binding ProteinsGene Expression Regulation, PlantGlucuronidaseHomozygoteMeristemMicroRNAsPlant LeavesPlant RootsRNA InterferenceTranscription FactorsZeatinAdenosine KinaseArabidopsis ProteinsARR5 protein, ArabidopsisARR7 protein, ArabidopsisCyclin B1CytokininsDNA-Binding ProteinsGlucuronidaseMicroRNAsTranscription FactorsZeatin

Identifiers

PMID21803861
PMCPMC3192563

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.