Evidence map›Paper›PMID 18845841›Full record

ArticleGenetics2008

RNA-dependent RNA polymerase is required for enhancer-mediated transcriptional silencing associated with paramutation at the maize p1 gene.

Lyudmila Sidorenko, Vicki Chandler

Open access · greenAbstract read
In one paragraph

Article in Genetics, 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
9.5field-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

21 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Paramutagenicity of a p1 epiallele in maize.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2013
    Article
  12. Epialleles in plant evolution.Genome biology · 2012
    Review
  13. Article
  14. Article
  15. Review
  16. Location of major effect genes in sorghum (Sorghum bicolor (L.) Moench).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2010
    Article
  17. RNA-mediated trans-communication can establish paramutation at the b1 locus in maize.Proceedings of the National Academy of Sciences of the United States of America · 2010
    Article
  18. Paramutation in maize: RNA mediated trans-generational gene silencing.Current opinion in genetics & development · 2010
    Review
  19. Darwin and genetics.Genetics · 2009
    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

2 authors at 1 institution in 1 country.

Lyudmila SidorenkoThe BIO5 Institute and Department of Plant Sciences, University of Arizona, Tucson, Arizona 85721, USA.
Vicki Chandler
University of Arizona · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Paramutation is the ability of an endogenous gene or a transgene to heritably silence another closely related allele or gene. At the maize p1 (pericarp color1) gene, paramutation is associated with decreases in transcript levels and reduced pigmentation of the endogenous allele that normally specifies red seed coat (pericarp) and cob pigmentation. Herein we demonstrate that this silencing occurs at the transcriptional level and that a specific enhancer fragment from p1 is sufficient to induce all aspects of paramutation. Further, we demonstrate that a mutation in the mop1 gene (mediator of paramutation1), which encodes a RNA-dependent RNA polymerase, is absolutely required for establishing the silencing associated with p1 paramutation. In contrast to its effects on other paramutation loci, the mop1 mutation does not immediately reactivate a previously silenced allele; several generations in the presence of the mop1 mutation are required. In addition, the mop1 mutation was also able to release tissue-specific silencing of another p1 allele that does not participate in paramutation, but does contain a tandem repeated structure and is likely regulated through epigenetic mechanisms. These results demonstrate that RNA-mediated gene-silencing mechanisms play key roles in p1 paramutation and the spectrum of roles for MOP1 is broadened to include tissue-specific expression patterns.

Indexed as

Gene SilencingMutationTranscription, GeneticAllelesDNA, PlantEnhancer Elements, GeneticGene Expression Regulation, PlantGenes, PlantModels, GeneticPlant ProteinsPlants, Genetically ModifiedRNA-Dependent RNA PolymeraseZea maysDNA, PlantPlant ProteinsRNA-Dependent RNA Polymerase

Identifiers

PMID18845841
PMCPMC2600936
OpenAlexW2122314783

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.