Evidence map›Paper›PMID 21258004›Full record

ArticleThe Plant cell2011

Cell-specific vacuolar calcium storage mediated by CAX1 regulates apoplastic calcium concentration, gas exchange, and plant productivity in Arabidopsis.

Simon J Conn, Matthew Gilliham, Asmini Athman, Andreas W Schreiber, Ute Baumann, Isabel Moller, Ning-Hui Cheng, Matthew A Stancombe, Kendal D Hirschi, Alex A R Webb and 4 more

Open access · hybridAbstract read
In one paragraph

Article in The Plant cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 104 papers.

0numbers the graph read from it
0cells of the map it votes in
104citing papers in PubMed
24.6field-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

104 citing papers in PubMed, 247 citations in OpenAlex.

  1. Plants (Basel, Switzerland) · 2026
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  3. Evolution and diversification of CaBMC plant biology · 2025
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  7. Article
  8. Comparative Analysis of CaPlants (Basel, Switzerland) · 2024
    Article
  9. Article
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  11. Review
  12. Article
  13. Auxin as an architect of the pectin matrix.Journal of experimental botany · 2023
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

44 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

14 authors at 6 institutions in 3 countries.

Simon J ConnSchool of Agriculture, Food, and Wine, University of Adelaide, Glen Osmond, South Australia 5064, Australia.
Matthew Gilliham
Asmini Athman
Andreas W Schreiber
Ute Baumann
Isabel Moller
Ning-Hui Cheng
Matthew A Stancombe
Kendal D Hirschi
Alex A R Webb
Rachel Burton
Brent N Kaiser
Stephen D Tyerman
Roger A Leigh
University of Adelaide · AUUniversity of Cambridge · GBAgricultural Research Service · USAustralian Centre for Plant Functional Genomics · AUChildren's Nutrition Research Center at Baylor College of Medicine · USUniversity of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The physiological role and mechanism of nutrient storage within vacuoles of specific cell types is poorly understood. Transcript profiles from Arabidopsis thaliana leaf cells differing in calcium concentration ([Ca], epidermis <10 mM versus mesophyll >60 mM) were compared using a microarray screen and single-cell quantitative PCR. Three tonoplast-localized Ca(2+) transporters, CAX1 (Ca(2+)/H(+)-antiporter), ACA4, and ACA11 (Ca(2+)-ATPases), were identified as preferentially expressed in Ca-rich mesophyll. Analysis of respective loss-of-function mutants demonstrated that only a mutant that lacked expression of both CAX1 and CAX3, a gene ectopically expressed in leaves upon knockout of CAX1, had reduced mesophyll [Ca]. Reduced capacity for mesophyll Ca accumulation resulted in reduced cell wall extensibility, stomatal aperture, transpiration, CO(2) assimilation, and leaf growth rate; increased transcript abundance of other Ca(2+) transporter genes; altered expression of cell wall-modifying proteins, including members of the pectinmethylesterase, expansin, cellulose synthase, and polygalacturonase families; and higher pectin concentrations and thicker cell walls. We demonstrate that these phenotypes result from altered apoplastic free [Ca(2+)], which is threefold greater in cax1/cax3 than in wild-type plants. We establish CAX1 as a key regulator of apoplastic [Ca(2+)] through compartmentation into mesophyll vacuoles, a mechanism essential for optimal plant function and productivity.

Indexed as

AntiportersArabidopsisArabidopsis ProteinsCalciumCation Transport ProteinsCell WallGene Expression ProfilingGene Expression Regulation, PlantMutagenesis, InsertionalMutationOligonucleotide Array Sequence AnalysisPhenotypePlant LeavesPlant StomataRNA, PlantSingle-Cell AnalysisAntiportersArabidopsis ProteinsCalciumcalcium-hydrogen antiportersCation Transport ProteinsRNA, Plant

Identifiers

PMID21258004
PMCPMC3051233
OpenAlexW2133275423

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.