Evidence map›Paper›PMID 26588467›Full record

ArticlePloS one2015

Unusually Large Number of Mutations in Asexually Reproducing Clonal Planarian Dugesia japonica.

Osamu Nishimura, Kazutaka Hosoda, Eri Kawaguchi, Shigenobu Yazawa, Tetsutaro Hayashi, Takeshi Inoue, Yoshihiko Umesono, Kiyokazu Agata

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. 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
2.6field-weighted citation impact, top 10% 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, 52 citations in OpenAlex.

  1. Limitations of serial cloning in mammals.Nature communications · 2026
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  4. The Multiscale Wisdom of the Body: Collective Intelligence as a Tractable Interface for Next-Generation Biomedicine.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
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  9. Collagen IV differentially regulates planarian stem cell potency and lineage progression.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Draft genome ofZoological letters · 2018
    Article
  17. Article
  18. Utilizing the planarian voltage-gated ion channel transcriptome to resolve a role for a CaBiochimica et biophysica acta. Molecular cell research · 2017
    Article
  19. Dataset for aData in brief · 2016
    Article
  20. Review
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

8 authors at 4 institutions in 1 country.

Osamu NishimuraGlobal COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto, Japan.
Kazutaka HosodaDepartment of Biophysics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto, Japan.
Eri KawaguchiGlobal COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto, Japan.
Shigenobu YazawaGlobal COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto, Japan.
Tetsutaro HayashiCenter for Developmental Biology, RIKEN, 2-2-3 Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo, Japan.
Takeshi InoueDepartment of Biophysics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto, Japan.
Yoshihiko UmesonoGraduate School of Life Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo, Japan.
Kiyokazu AgataGlobal COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, Kyoto, Japan.
Kyoto University · JPNagoya University · JPRIKEN Center for Advanced Photonics · JPUniversity of Hyogo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We established a laboratory clonal strain of freshwater planarian (Dugesia japonica) that was derived from a single individual and that continued to undergo autotomous asexual reproduction for more than 20 years, and we performed large-scale genome sequencing and transcriptome analysis on it. Despite the fact that a completely clonal strain of the planarian was used, an unusually large number of mutations were detected. To enable quantitative genetic analysis of such a unique organism, we developed a new model called the Reference Gene Model, and used it to conduct large-scale transcriptome analysis. The results revealed large numbers of mutations not only outside but also inside gene-coding regions. Non-synonymous SNPs were detected in 74% of the genes for which valid ORFs were predicted. Interestingly, the high-mutation genes, such as metabolism- and defense-related genes, were correlated with genes that were previously identified as diverse genes among different planarian species. Although a large number of amino acid substitutions were apparently accumulated during asexual reproduction over this long period of time, the planarian maintained normal body-shape, behaviors, and physiological functions. The results of the present study reveal a unique aspect of asexual reproduction.

Indexed as

Genome, HelminthMutationTranscriptomeAmino Acid SubstitutionAnimalsCell CountClone CellsGene ExpressionGene Expression ProfilingHelminth ProteinsModels, GeneticMolecular Sequence AnnotationOpen Reading FramesPlanariansPolymorphism, Single NucleotideReproduction, AsexualHelminth Proteins

Identifiers

PMID26588467
PMCPMC4654569
OpenAlexW2270990504

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.