Evidence map›Paper›PMID 20543958›Full record

ArticlePloS one2010

Endosymbiont DNA in endobacteria-free filarial nematodes indicates ancient horizontal genetic transfer.

Samantha N McNulty, Jeremy M Foster, Makedonka Mitreva, Julie C Dunning Hotopp, John Martin, Kerstin Fischer, Bo Wu, Paul J Davis, Sanjay Kumar, Norbert W Brattig and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed
8.1field-weighted citation impact, top 2% 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

65 citing papers in PubMed, 124 citations in OpenAlex.

  1. In Saccharomyces cerevisiae ΔRIB1 and ΔRIB4 mutants, riboflavin auxotrophy is reverted by Wolbachia (wStr) infection.International microbiology : the official journal of the Spanish Society for Microbiology · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Discovery of a novelFrontiers in microbiology · 2024
    Article
  6. Frontiers in microbiology · 2024
    Article
  7. Case report: Filarial infection of a parti-coloured bat:Frontiers in veterinary science · 2023
    Article
  8. Retrotransposition facilitated the establishment of a primary plastid in the thecate amoebaProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  9. Article
  10. Recently EvolvedFrontiers in cellular and infection microbiology · 2022
    Article
  11. Discovery of Early-BranchingFrontiers in microbiology · 2022
    Article
  12. Article
  13. Evolution ofPeerJ · 2020
    Article
  14. TwinBLAST: When Two Is Better than One.Microbiology resource announcements · 2019
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Lessons from the genomes and transcriptomes of filarial nematodes.Molecular and biochemical parasitology · 2017
    Review

5 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

13 authors at 4 institutions in 2 countries.

Samantha N McNultyInfectious Diseases Division, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Jeremy M Foster
Makedonka Mitreva
Julie C Dunning Hotopp
John Martin
Kerstin Fischer
Bo Wu
Paul J Davis
Sanjay Kumar
Norbert W Brattig
Barton E Slatko
Gary J Weil
Peter U Fischer
Washington University in St. Louis · USNew England Biolabs (United States) · USBernhard Nocht Institute for Tropical Medicine · DEUniversity of Maryland, Baltimore · US

Funding

Infectious Diseases/Basic Microbial Pathogenic MechanismsT32AI007172 · NIAID · WASHINGTON UNIVERSITY · PI Daniel E. Goldberg, JENNIFER A PHILIPS · 1985 to 2026
$13.0M
NIAID NIH HHS T32 AI007172NIAID NIH HHS T32-AI007172
6 · The paper itself

Abstract

backgroundWolbachia are among the most abundant symbiotic microbes on earth; they are present in about 66% of all insect species, some spiders, mites and crustaceans, and most filarial nematode species. Infected filarial nematodes, including many pathogens of medical and veterinary importance, depend on Wolbachia for proper development and survival. The mechanisms behind this interdependence are not understood. Interestingly, a minority of filarial species examined to date are naturally Wolbachia-free. METHODOLOGY/PRINCIPAL

findingsWe used 454 pyrosequencing to survey the genomes of two distantly related Wolbachia-free filarial species, Acanthocheilonema viteae and Onchocerca flexuosa. This screen identified 49 Wolbachia-like DNA sequences in A. viteae and 114 in O. flexuosa. qRT-PCR reactions detected expression of 30 Wolbachia-like sequences in A. viteae and 56 in O. flexuosa. Approximately half of these appear to be transcribed from pseudogenes. In situ hybridization showed that two of these pseudogene transcripts were specifically expressed in developing embryos and testes of both species. CONCLUSIONS/SIGNIFICANCE: These results strongly suggest that the last common ancestor of extant filarial nematodes was infected with Wolbachia and that this former endosymbiont contributed to their genome evolution. Horizontally transferred Wolbachia DNA may explain the ability of some filarial species to live and reproduce without the endosymbiont while other species cannot.

Indexed as

Gene Transfer, HorizontalSymbiosisAnimalsDNA, BacterialGenome, BacterialNematodaReverse Transcriptase Polymerase Chain ReactionRNA, MessengerWolbachiaDNA, BacterialRNA, Messenger

Identifiers

PMID20543958
PMCPMC2882956
OpenAlexW2133941155

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.