Evidence map›Paper›PMID 23512852›Full record

ArticleThe Plant cell2013

Maize RNA polymerase IV defines trans-generational epigenetic variation.

Karl F Erhard, Susan E Parkinson, Stephen M Gross, Joy-El R Barbour, Jana P Lim, Jay B Hollick

Open access · bronzeAbstract read
In one paragraph

Article in The Plant cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
7.9field-weighted citation impact, top 3% 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

20 citing papers in PubMed, 39 citations in OpenAlex.

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  16. Epigenetic Changes in Hybrids.Plant physiology · 2015
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Karl F ErhardDepartment of Plant and Microbial Biology, University of California, Berkeley, California 94720-3102, USA.
Susan E Parkinson
Stephen M Gross
Joy-El R Barbour
Jana P Lim
Jay B Hollick
University of California, Berkeley · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The maize (Zea mays) RNA Polymerase IV (Pol IV) largest subunit, RNA Polymerase D1 (RPD1 or NRPD1), is required for facilitating paramutations, restricting expression patterns of genes required for normal development, and generating small interfering RNA (siRNAs). Despite this expanded role for maize Pol IV relative to Arabidopsis thaliana, neither the general characteristics of Pol IV-regulated haplotypes, nor their prevalence, are known. Here, we show that specific haplotypes of the purple plant1 locus, encoding an anthocyanin pigment regulator, acquire and retain an expanded expression domain following transmission from siRNA biogenesis mutants. This conditioned expression pattern is progressively enhanced over generations in Pol IV mutants and then remains heritable after restoration of Pol IV function. This unusual genetic behavior is associated with promoter-proximal transposon fragments but is independent of sequences required for paramutation. These results indicate that trans-generational Pol IV action defines the expression patterns of haplotypes using co-opted transposon-derived sequences as regulatory elements. Our results provide a molecular framework for the concept that induced changes to the heterochromatic component of the genome are coincident with heritable changes in gene regulation. Alterations of this Pol IV-based regulatory system can generate potentially desirable and adaptive traits for selection to act upon.

Indexed as

Epigenesis, GeneticGene Expression Regulation, PlantAllelesAnthocyaninsChromatin Assembly and DisassemblyDNA-Directed RNA PolymerasesDNA Transposable ElementsGenetic LociHaplotypesInheritance PatternsMolecular Sequence DataPhenotypePlant ProteinsRegulatory Sequences, Nucleic AcidRNA, PlantRNA, Small InterferingAnthocyaninsDNA-Directed RNA PolymerasesDNA Transposable ElementsPlant ProteinsRNA, PlantRNA, Small Interfering

Identifiers

PMID23512852
PMCPMC3634690
OpenAlexW2107212293

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.