Evidence map›Paper›PMID 27720618›Full record

ArticleCurrent biology : CB2016

Stomatal Function Requires Pectin De-methyl-esterification of the Guard Cell Wall.

Sam Amsbury, Lee Hunt, Nagat Elhaddad, Alice Baillie, Marjorie Lundgren, Yves Verhertbruggen, Henrik V Scheller, J Paul Knox, Andrew J Fleming, Julie E Gray

Open access · hybridAbstract read
In one paragraph

Article in Current biology : CB, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
28.1field-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

75 citing papers in PubMed, 147 citations in OpenAlex.

  1. Review
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  3. Functional Analysis of the GH16 Domain-ContainingPlants (Basel, Switzerland) · 2026
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15 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

10 authors at 4 institutions in 3 countries.

Sam AmsburyDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK.
Lee HuntDepartment of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK.
Nagat ElhaddadDepartment of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK; Department of Botany, University of Omar Al-Mukhtar, Al-Baida, Libya.
Alice BaillieDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK.
Marjorie LundgrenDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK.
Yves VerhertbruggenBiological Systems and Engineering Division and Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
Henrik V SchellerBiological Systems and Engineering Division and Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
J Paul KnoxCentre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
Andrew J FlemingDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK. Electronic address: a.fleming@sheffield.ac.uk.
Julie E GrayDepartment of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK. Electronic address: j.e.gray@sheffield.ac.uk.
University of Sheffield · GBJoint BioEnergy Institute · USOmar Al-Mukhtar University · LYUniversity of Leeds · GB

Funding

Biotechnology and Biological Sciences Research Council BB/I002154/1
6 · The paper itself

Abstract

Stomatal opening and closure depends on changes in turgor pressure acting within guard cells to alter cell shape [1]. The extent of these shape changes is limited by the mechanical properties of the cells, which will be largely dependent on the structure of the cell walls. Although it has long been observed that guard cells are anisotropic due to differential thickening and the orientation of cellulose microfibrils [2], our understanding of the composition of the cell wall that allows them to undergo repeated swelling and deflation remains surprisingly poor. Here, we show that the walls of guard cells are rich in un-esterified pectins. We identify a pectin methylesterase gene, PME6, which is highly expressed in guard cells and required for stomatal function. pme6-1 mutant guard cells have walls enriched in methyl-esterified pectin and show a decreased dynamic range in response to triggers of stomatal opening/closure, including elevated osmoticum, suggesting that abrogation of stomatal function reflects a mechanical change in the guard cell wall. Altered stomatal function leads to increased conductance and evaporative cooling, as well as decreased plant growth. The growth defect of the pme6-1 mutant is rescued by maintaining the plants in elevated CO

Indexed as

Gene Expression Regulation, PlantArabidopsisArabidopsis ProteinsCell WallDemethylationEsterificationPectinsPlant StomataArabidopsis ProteinsPectinsPME6 protein, ArabidopsisArabidopsiscell wallguard cellpectinstomata

Identifiers

PMID27720618
PMCPMC5106435
OpenAlexW2529808617

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.