Evidence map›Paper›PMID 19825650›Full record

ArticleMolecular plant2009

RNA polymerase V functions in Arabidopsis interphase heterochromatin organization independently of the 24-nt siRNA-directed DNA methylation pathway.

Olga Pontes, Pedro Costa-Nunes, Paul Vithayathil, Craig S Pikaard

Open access · bronzeAbstract read
In one paragraph

Article in Molecular plant, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
11.4field-weighted citation impact, top 2% 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

43 citing papers in PubMed, 71 citations in OpenAlex.

  1. From RdDM to plant defence.Nature plants · 2024
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  6. Broad noncoding transcription suggests genome surveillance by RNA polymerase V.Proceedings of the National Academy of Sciences of the United States of America · 2020
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  14. Chromatin-associated transcripts of tandemly repetitive DNA sequences revealed by RNA-FISH.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2016
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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.

Olga PontesBiology Department, Washington University, 1 Brookings Drive, St Louis, MO 63130, USA. Electronic address: opontes@biology2.wustl.edu.
Pedro Costa-NunesBiology Department, Washington University, 1 Brookings Drive, St Louis, MO 63130, USA.
Paul VithayathilBiology Department, Washington University, 1 Brookings Drive, St Louis, MO 63130, USA.
Craig S PikaardBiology Department, Washington University, 1 Brookings Drive, St Louis, MO 63130, USA.
Washington University in St. Louis · US

Funding

Roles of RNA Polymerases IV and V in siRNA-mediated gene silencingR01GM077590 · NIGMS · WASHINGTON UNIVERSITY · PI PIKAARD, CRAIG STUART · 2006 to 2020
$3.5M
NIGMS NIH HHS GM077590NIGMS NIH HHS R01 GM077590
6 · The paper itself

Abstract

In Arabidopsis, pericentromeric repeats, retroelements, and silenced rRNA genes are assembled into heterochromatin within nuclear structures known as chromocenters. The mechanisms governing higher-order heterochromatin organization are poorly understood but 24-nt small interfering RNAs (siRNAs) are known to play key roles in heterochromatin formation. Nuclear RNA polymerase IV (Pol IV), RNA-DEPENDENT RNA POLYMERASE 2 (RDR2), and DICER-LIKE 3 (DCL3) are required for biogenesis of 24-nt siRNAs that associate with ARGONAUTE 4 (AGO4). Nuclear RNA polymerase V (Pol V) collaborates with DRD1 (DEFICIENT IN RNA-DEPENDENT DNA METHYLATION 1) to generate transcripts at heterochromatic loci that are hypothesized to bind to siRNA-AGO4 complexes and subsequently recruit the de-novo DNA methylation and/or histone modifying machinery. Here, we report that decondensation of the major pericentromeric repeats and depletion of the heterochromatic mark histone H3 lysine 9 dimethylation at chromocenters occurs specifically in pol V and drd1 mutants. Disruption of pericentromeric repeats condensation is coincident with transcriptional reactivation of specific classes of pericentromeric 180-bp repeats. We further demonstrate that Pol V functions independently of Pol IV, RDR2, and DCL3-mediated siRNA production to affect interphase heterochromatin organization, possibly by involving RNAs that recruit structural or chromatin-modifying proteins.

Indexed as

ArabidopsisArabidopsis ProteinsDNA-Directed RNA PolymerasesDNA MethylationFluorescent Antibody TechniqueGene Expression Regulation, PlantHeterochromatinIn Situ HybridizationMicroscopy, FluorescenceReverse Transcriptase Polymerase Chain ReactionRibonuclease IIIRNA-Dependent RNA PolymeraseRNA, Small InterferingSignal TransductionArabidopsis ProteinsDCL3 protein, ArabidopsisDNA-Directed RNA PolymerasesDRD1 protein, ArabidopsisHeterochromatinRDR2 protein, ArabidopsisRibonuclease IIIRNA-Dependent RNA PolymeraseRNA polymerase IV, ArabidopsisRNA polymerase V, ArabidopsisRNA, Small Interfering

Identifiers

PMID19825650
PMCPMC2902898
OpenAlexW2161935046

What OpenQuestion holds

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Registered trials

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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.