Evidence map›Paper›PMID 18957507›Full record

ArticleThe Plant cell2008

Isoprenylcysteine methylation and demethylation regulate abscisic acid signaling in Arabidopsis.

David H Huizinga, Olutope Omosegbon, Bilal Omery, Dring N Crowell

Open access · bronzeAbstract read
In one paragraph

Article in The Plant cell, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.2field-weighted citation impact, top 5% 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

21 citing papers in PubMed, 43 citations in OpenAlex.

  1. International journal of molecular sciences · 2026
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  11. Protein prenylation: unique fats make their mark on biology.Nature reviews. Molecular cell biology · 2016
    Review
  12. Article
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  15. Epigenetic responses to drought stress in rice (Oryza sativa L.).Physiology and molecular biology of plants : an international journal of functional plant biology · 2013
    Article
  16. Control of RhoA methylation by carboxylesterase I.The Journal of biological chemistry · 2013
    Article
  17. Article
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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.

David H HuizingaDepartment of Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202-5132, USA.
Olutope Omosegbon
Bilal Omery
Dring N Crowell
Indiana University – Purdue University Indianapolis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Isoprenylated proteins bear an isoprenylcysteine methyl ester at the C terminus. Although isoprenylated proteins have been implicated in meristem development and negative regulation of abscisic acid (ABA) signaling, the functional role of the terminal methyl group has not been described. Here, we show that transgenic Arabidopsis thaliana plants overproducing isoprenylcysteine methyltransferase (ICMT) exhibit ABA insensitivity in stomatal closure and seed germination assays, establishing ICMT as a negative regulator of ABA signaling. By contrast, transgenic plants overproducing isoprenylcysteine methylesterase (ICME) exhibit ABA hypersensitivity in stomatal closure and seed germination assays. Thus, ICME is a positive regulator of ABA signaling. To test the hypothesis that ABA signaling is under feedback regulation at the level of isoprenylcysteine methylation, we examined the effect of ABA on ICMT and ICME gene expression. Interestingly, ABA induces ICME gene expression, establishing a positive feedback loop whereby ABA promotes ABA responsiveness of plant cells via induction of ICME expression, which presumably results in the demethylation and inactivation of isoprenylated negative regulators of ABA signaling. These results suggest strategies for metabolic engineering of crop species for drought tolerance by targeted alterations in isoprenylcysteine methylation.

Indexed as

Abscisic AcidArabidopsisArabidopsis ProteinsCysteineEsterasesFeedback, PhysiologicalGene Expression Regulation, PlantMethylationModels, BiologicalPlants, Genetically ModifiedPrenylationProtein MethyltransferasesSignal TransductionAbscisic AcidArabidopsis ProteinsCysteineEsterasesProtein Methyltransferases

Identifiers

PMID18957507
PMCPMC2590716
OpenAlexW2112555309

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.