Evidence map›Paper›PMID 8978683›Full record

ArticleThe EMBO journal1996

A novel chloride channel in Vicia faba guard cell vacuoles activated by the serine/threonine kinase, CDPK.

Z M Pei, J M Ward, J F Harper, J I Schroeder

Open access · greenAbstract readComparative Study
In one paragraph

Article in The EMBO journal, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
13.9field-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

48 citing papers in PubMed, 162 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. A vacuolar phosphate transporter essential for phosphate homeostasis in Arabidopsis.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  9. Article
  10. Article
  11. 14-3-3 Proteins in Guard Cell Signaling.Frontiers in plant science · 2015
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. CDPKs in immune and stress signaling.Trends in plant science · 2013
    Review
  18. Article
  19. Article
  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

4 authors at 1 institution in 1 country.

Z M PeiDepartment of Biology and Center for Molecular Genetics, University of California, San Diego, La Jolla 92093-0116, USA.
J M Ward
J F Harper
J I Schroeder
University of California San Diego · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Calcium-Dependent Protein Kinases (CDPKs) in higher plants contain a C-terminal calmodulin-like regulatory domain. Little is known regarding physiological CDPK targets. Both kinase activity and multiple Ca2+-dependent signaling pathways have been implicated in the control of stomatal guard cell movements. To determine whether CDPK or other protein kinases could have a role in guard cell signaling, purified and recombinant kinases were applied to Vicia faba guard cell vacuoles during patch-clamp experiments. CDPK activated novel vacuolar chloride (VCL) and malate conductances in guard cells. Activation was dependent on both Ca2+ and ATP. Furthermore, VCL activation occurred in the absence of Ca2+ using a Ca2+-independent, constitutively active, CDPK* mutant. Protein kinase A showed weaker activation (22% as compared with CDPK). Current reversals in whole vacuole recordings shifted with the Nernst potential for Cl-and vanished in glutamate. Single channel recordings showed a CDPK-activated 34 +/- 5 pS Cl- channel. VCL channels were activated at physiological potentials enabling Cl- uptake into vacuoles. VCL channels may provide a previously unidentified, but necessary, pathway for anion uptake into vacuoles required for stomatal opening. CDPK-activated VCL currents were also observed in red beet vacuoles suggesting that these channels may provide a more general mechanism for kinase-dependent anion uptake.

Indexed as

Plants, MedicinalAdenosine TriphosphateCalciumCell MovementChloride ChannelsCytosolFabaceaeKineticsMembrane PotentialsPatch-Clamp TechniquesProtein Serine-Threonine KinasesSpecies SpecificityVacuolesVegetablesAdenosine TriphosphateCalciumChloride ChannelsProtein Serine-Threonine KinasesNon-programmatic

Identifiers

PMID8978683
PMCPMC452481
OpenAlexW144778061

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.