Evidence map›Paper›PMID 19755470›Full record

ArticleProceedings. Biological sciences2009

MicroRNAs resolve an apparent conflict between annelid systematics and their fossil record.

Erik A Sperling, Jakob Vinther, Vanessa N Moy, Benjamin M Wheeler, Marie Sémon, Derek E G Briggs, Kevin J Peterson

Abstract readComparative Study
In one paragraph

Article in Proceedings. Biological sciences, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

  1. Article
  2. Article
  3. The Draft Genome of Chinese Endemic SpeciesFrontiers in genetics · 2022
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. A critical appraisal of the use of microRNA data in phylogenetics.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  12. Article
  13. Article
  14. Building a robust a-p axis.Current genomics · 2012
    Article
  15. Article
  16. Article
  17. Cellular and muscular growth patterns during sipunculan development.Journal of experimental zoology. Part B, Molecular and developmental evolution · 2011
    Article
  18. Review
  19. 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.

Erik A SperlingDepartment of Geology and Geophysics, Yale University, New Haven, CT 06520, USA.
Jakob Vinther
Vanessa N Moy
Benjamin M Wheeler
Marie Sémon
Derek E G Briggs
Kevin J Peterson

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Both the monophyly and inter-relationships of the major annelid groups have remained uncertain, despite intensive research on both morphology and molecular sequences. Morphological cladistic analyses indicate that Annelida is monophyletic and consists of two monophyletic groups, the clitellates and polychaetes, whereas molecular phylogenetic analyses suggest that polychaetes are paraphyletic and that sipunculans are crown-group annelids. Both the monophyly of polychaetes and the placement of sipunculans within annelids are in conflict with the annelid fossil record--the former because Cambrian stem taxa are similar to modern polychaetes in possessing biramous parapodia, suggesting that clitellates are derived from polychaetes; the latter because although fossil sipunculans are known from the Early Cambrian, crown-group annelids do not appear until the latest Cambrian. Here we apply a different data source, the presence versus absence of specific microRNAs--genes that encode approximately 22 nucleotide non-coding regulatory RNAs--to the problem of annelid phylogenetics. We show that annelids are monophyletic with respect to sipunculans, and polychaetes are paraphyletic with respect to the clitellate Lumbricus, conclusions that are consistent with the fossil record. Further, sipunculans resolve as the sister group of the annelids, rooting the annelid tree, and revealing the polarity of the morphological change within this diverse lineage of animals.

Indexed as

FossilsPhylogenyAnimalsAnnelidaBase SequenceBlotting, NorthernMicroRNAsMolecular Sequence DataSequence Analysis, DNAMicroRNAs

Identifiers

PMID19755470
PMCPMC2817109

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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.