Evidence map›Paper›PMID 34400639›Full record

ArticleNature communications2021

Pre-meiotic 21-nucleotide reproductive phasiRNAs emerged in seed plants and diversified in flowering plants.

Suresh Pokhrel, Kun Huang, Sébastien Bélanger, Junpeng Zhan, Jeffrey L Caplan, Elena M Kramer, Blake C Meyers

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
6.6field-weighted citation impact, top 4% 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

26 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Reproductive phasiRNAs are the piRNAs of plants.Trends in genetics : TIG · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  10. Review
  11. Article
  12. Review
  13. Premeiotic 24-nt phasiRNAs are present in theProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  14. Article
  15. Premeiotic 24-nt phasiRNAs are present in thebioRxiv : the preprint server for biology · 2024
    Article
  16. Article
  17. Review
  18. Article
  19. Review
  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

7 authors at 3 institutions in 2 countries.

Suresh PokhrelDonald Danforth Plant Science Center, Saint Louis, MO, USA.ORCID http://orcid.org/0000-0002-5323-1940
Kun HuangBio-Imaging Center, Delaware Biotechnology Institute, University of Delaware, Newark, DE, USA.
Sébastien BélangerDonald Danforth Plant Science Center, Saint Louis, MO, USA.
Junpeng ZhanDonald Danforth Plant Science Center, Saint Louis, MO, USA.ORCID http://orcid.org/0000-0001-7353-7608
Jeffrey L CaplanBio-Imaging Center, Delaware Biotechnology Institute, University of Delaware, Newark, DE, USA.
Elena M KramerDepartment of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA.
Blake C MeyersDonald Danforth Plant Science Center, Saint Louis, MO, USA. bmeyers@danforthcenter.org.ORCID http://orcid.org/0000-0003-3436-6097
Donald Danforth Plant Science Center · USBiotechnology Institute · USHarvard University · US

Funding

Predictive Modeling & Optimal Control Framework for Model-Based Epidemic Response in DelawareP20GM103446 · NIGMS · UNIVERSITY OF DELAWARE · PI Shawn W Polson · 2012 to 2026
$67.2M
Zeiss LSM710 Inverted Confocal MicroscopeS10OD016361 · OD · UNIVERSITY OF DELAWARE · PI CAPLAN, JEFFREY L · 2015 to 2015
$444k
NIGMS NIH HHS P20 GM103446NIH HHS S10 OD016361
6 · The paper itself

Abstract

Plant small RNAs are important regulatory elements that fine-tune gene expression and maintain genome integrity by silencing transposons. Reproductive organs of monocots produce abundant phased, small interfering RNAs (phasiRNAs). The 21-nt reproductive phasiRNAs triggered by miR2118 are highly enriched in pre-meiotic anthers, and have been found in multiple eudicot species, in contrast with prior reports of monocot specificity. The 24-nt reproductive phasiRNAs are triggered by miR2275, and are highly enriched during meiosis in many angiosperms. Here, we report the widespread presence of the 21-nt reproductive phasiRNA pathway in eudicots including canonical and non-canonical microRNA (miRNA) triggers of this pathway. In eudicots, these 21-nt phasiRNAs are enriched in pre-meiotic stages, a spatiotemporal distribution consistent with that of monocots and suggesting a role in anther development. Although this pathway is apparently absent in well-studied eudicot families including the Brassicaceae, Solanaceae and Fabaceae, our work in eudicots supports an earlier singular finding in spruce, a gymnosperm, indicating that the pathway of 21-nt reproductive phasiRNAs emerged in seed plants and was lost in some lineages.

Indexed as

FragariaGene Expression Regulation, PlantMagnoliopsidaMeiosisMicroRNAsNucleotidesPhylogenyPiceaPlant ProteinsRNA, Double-StrandedRNA, PlantRNA, Small InterferingSeedsSolanaceaeTranscriptomeMicroRNAsNucleotidesPlant ProteinsRNA, Double-StrandedRNA, PlantRNA, Small Interfering

Identifiers

PMID34400639
PMCPMC8368212
OpenAlexW3193494410

What OpenQuestion holds

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LicenceCC BY
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.