Evidence map›Paper›PMID 31896557›Full record

ArticleGenome research2020

Genome-wide redistribution of 24-nt siRNAs in rice gametes.

Chenxin Li, Hengping Xu, Fang-Fang Fu, Scott D Russell, Venkatesan Sundaresan, Jonathan I Gent

Open access · bronzeAbstract read
In one paragraph

Article in Genome research, 2020. 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
–field-weighted citation impact
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, 54 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. The plant siRNA landscape.The Plant cell · 2024
    Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
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  16. Review
  17. Article
  18. Divergence among rice cultivars reveals roles for transposition and epimutation in ongoing evolution of genomic imprinting.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  19. 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

6 authors at 3 institutions in 1 country.

Chenxin Li *Department of Plant Biology, University of California, Davis, California 95616, USA.
Hengping Xu *Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, USA.
Fang-Fang FuDepartment of Plant Biology, University of Georgia, Athens, Georgia 30602, USA.ORCID 0000-0002-3187-9308
Scott D RussellDepartment of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, USA.ORCID 0000-0001-8302-4160
Venkatesan SundaresanDepartment of Plant Biology, University of California, Davis, California 95616, USA.ORCID 0000-0002-4670-0630
Jonathan I GentDepartment of Plant Biology, University of Georgia, Athens, Georgia 30602, USA.ORCID 0000-0002-3584-7717
University of California, Davis · USUniversity of Georgia · USUniversity of Oklahoma · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gametes constitute a critical stage of the plant life cycle during which the genome undergoes reprogramming in preparation for embryogenesis. Here, we examined genome-wide distributions of small RNAs in the sperm and egg cells of rice. We found that 24-nt siRNAs, which are a hallmark of RNA-directed DNA methylation (RdDM) in plants, were depleted from heterochromatin boundaries in both gametes relative to vegetative tissues, reminiscent of siRNA patterns in DDM1-type nucleosome remodeler mutants. In sperm cells, 24-nt siRNAs were spread across heterochromatic regions, while in egg cells, 24-nt siRNAs were concentrated at a smaller number of heterochromatic loci throughout the genome, especially at loci which also produced siRNAs in other tissues. In both gametes, patterns of CHH methylation, typically a strong indicator of RdDM, were similar to vegetative tissues, although lower in magnitude. These findings indicate that the small RNA transcriptome undergoes large-scale redistribution in both male and female gametes, which is not correlated with recruitment of DNA methyltransferases in gametes and suggestive of unexplored regulatory activities of gamete small RNAs.

Indexed as

DNA MethylationGene Expression Regulation, PlantGene SilencingGenome, PlantGerm CellsHeterochromatinNucleosomesOryzaRNA, Small InterferingSex Determination ProcessesTranscriptomeHeterochromatinNucleosomesRNA, Small Interfering

Identifiers

PMID31896557
PMCPMC7050532
OpenAlexW2997003254

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.