Evidence map›Paper›PMID 27832128›Full record

ArticlePloS one2016

Mitochondrial Genome Sequences and Structures Aid in the Resolution of Piroplasmida phylogeny.

Megan E Schreeg, Henry S Marr, Jaime L Tarigo, Leah A Cohn, David M Bird, Elizabeth H Scholl, Michael G Levy, Brian M Wiegmann, Adam J Birkenheuer

Abstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 1 pooled it
–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

74 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  5. Review
  6. Article
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  11. Diversity ofPathogens (Basel, Switzerland) · 2025
    Article
  12. Article
  13. Diversity of piroplasmids in wild animals in Brazil: a review.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2025
    Review
  14. Article
  15. Article
  16. Mitochondrial Genome Analysis ofVeterinary sciences · 2024
    Article
  17. Description ofInternational journal for parasitology. Parasites and wildlife · 2024
    Article
  18. Article
  19. Article
  20. Article

14 more citing papers are in PubMed but not listed here.

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

9 authors.

Megan E SchreegNorth Carolina State University, College of Veterinary Medicine, Raleigh, North Carolina, United States of America.ORCID http://orcid.org/0000-0001-5649-8854
Henry S MarrNorth Carolina State University, College of Veterinary Medicine, Raleigh, North Carolina, United States of America.
Jaime L TarigoNorth Carolina State University, College of Veterinary Medicine, Raleigh, North Carolina, United States of America.
Leah A CohnUniversity of Missouri, College of Veterinary Medicine, Columbia, Missouri, United States of America.
David M BirdNorth Carolina State University, College of Agriculture and Life Sciences, Raleigh, North Carolina, United States of America.
Elizabeth H SchollNorth Carolina State University, College of Agriculture and Life Sciences, Raleigh, North Carolina, United States of America.
Michael G LevyNorth Carolina State University, College of Veterinary Medicine, Raleigh, North Carolina, United States of America.
Brian M WiegmannNorth Carolina State University, College of Agriculture and Life Sciences, Raleigh, North Carolina, United States of America.
Adam J BirkenheuerNorth Carolina State University, College of Veterinary Medicine, Raleigh, North Carolina, United States of America.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The taxonomy of the order Piroplasmida, which includes a number of clinically and economically relevant organisms, is a hotly debated topic amongst parasitologists. Three genera (Babesia, Theileria, and Cytauxzoon) are recognized based on parasite life cycle characteristics, but molecular phylogenetic analyses of 18S sequences have suggested the presence of five or more distinct Piroplasmida lineages. Despite these important advancements, a few studies have been unable to define the taxonomic relationships of some organisms (e.g. C. felis and T. equi) with respect to other Piroplasmida. Additional evidence from mitochondrial genome sequences and synteny should aid in the inference of Piroplasmida phylogeny and resolution of taxonomic uncertainties. In this study, we have amplified, sequenced, and annotated seven previously uncharacterized mitochondrial genomes (Babesia canis, Babesia vogeli, Babesia rossi, Babesia sp. Coco, Babesia conradae, Babesia microti-like sp., and Cytauxzoon felis) and identified additional ribosomal fragments in ten previously characterized mitochondrial genomes. Phylogenetic analysis of concatenated mitochondrial and 18S sequences as well as cox1 amino acid sequence identified five distinct Piroplasmida groups, each of which possesses a unique mitochondrial genome structure. Specifically, our results confirm the existence of four previously identified clades (B. microti group, Babesia sensu stricto, Theileria equi, and a Babesia sensu latu group that includes B. conradae) while supporting the integration of Theileria and Cytauxzoon species into a single fifth taxon. Although known biological characteristics of Piroplasmida corroborate the proposed phylogeny, more investigation into parasite life cycles is warranted to further understand the evolution of the Piroplasmida. Our results provide an evolutionary framework for comparative biology of these important animal and human pathogens and help focus renewed efforts toward understanding the phylogenetic relationships within the group.

Indexed as

Genome, MitochondrialPhylogenyDNA, ProtozoanHumansPiroplasmidaProtozoan InfectionsDNA, Protozoan

Identifiers

PMID27832128
PMCPMC5104439

What OpenQuestion holds

Textmetadata
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.