Evidence map›Paper›PMID 21034474›Full record

ArticleGenome biology2010

Structure and dynamics of the pan-genome of Streptococcus pneumoniae and closely related species.

Claudio Donati, N Luisa Hiller, Hervé Tettelin, Alessandro Muzzi, Nicholas J Croucher, Samuel V Angiuoli, Marco Oggioni, Julie C Dunning Hotopp, Fen Z Hu, David R Riley and 8 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Genome biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 245 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
245citing papers in PubMed, 1 pooled it
16.3field-weighted citation impact, top 1% 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

245 citing papers in PubMed, 1 synthesis or guideline pooled it, 402 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
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  7. Article
  8. Review
  9. Article
  10. Whole-genome and pan-genome analyses reveal genomic differences among nontypeableFrontiers in cellular and infection microbiology · 2026
    Article
  11. Article
  12. Review
  13. Article
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  19. Review
  20. Comparative genomics-based insights intoApplied and environmental microbiology · 2025
    Article

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

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

18 authors at 10 institutions in 5 countries.

Claudio DonatiNovartis Vaccines and Diagnostics, Via Fiorentina 1, 53100 Siena, Italy. claudio.donati@novartis.com
N Luisa Hiller
Hervé Tettelin
Alessandro Muzzi
Nicholas J Croucher
Samuel V Angiuoli
Marco Oggioni
Julie C Dunning Hotopp
Fen Z Hu
David R Riley
Antonello Covacci
Tim J Mitchell
Stephen D Bentley
Morgens Kilian
Garth D Ehrlich
Rino Rappuoli
E Richard Moxon
Vega Masignani
Newron Pharmaceuticals (Italy) · ITUniversity of Maryland, Baltimore · USAllegheny General Hospital · USWellcome Sanger Institute · GBAarhus University · DKAllegheny-Singer Research Institute · USJohn Radcliffe Hospital · GBNovartis (Italy) · ITUniversity of Glasgow · GBUniversity of Siena · IT

Funding

THE ROLE OF BIOFILMS IN THE PATHOGENESIS OF OTORRHEAR01DC004173 · NIDCD · ALLEGHENY-SINGER RESEARCH INSTITUTE · PI EHRLICH, GARTH D. · 2000 to 2008
$7.0M
MOLECULAR ANALYSIS OF PATHOGENS IN OTITIS MEDIA BY PCRR01DC002148 · NIDCD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI EHRLICH, GARTH D. · 1994 to 2017
$6.5M
Pneumococcal Biofilms in Otitis MediaR01DC005659 · NIDCD · ALLEGHENY-SINGER RESEARCH INSTITUTE · PI POST, JAMES CHRISTOPHER · 2003 to 2007
$3.1M
Impact of Antibiotics and Vaccines on the in vivo Evolution of S. pneumoniaeR01AI080935 · NIAID · ALLEGHENY-SINGER RESEARCH INSTITUTE · PI EHRLICH, GARTH D. · 2009 to 2010
$1.3M
NIAID NIH HHS AI080935NIAID NIH HHS N01-AI-30071NIAID NIH HHS R01 AI080935NIDCD NIH HHS DC02148NIDCD NIH HHS DC04173NIDCD NIH HHS DC05659NIDCD NIH HHS R01 DC002148Wellcome Trust
6 · The paper itself

Abstract

backgroundStreptococcus pneumoniae is one of the most important causes of microbial diseases in humans. The genomes of 44 diverse strains of S. pneumoniae were analyzed and compared with strains of non-pathogenic streptococci of the Mitis group.

resultsDespite evidence of extensive recombination, the S. pneumoniae phylogenetic tree revealed six major lineages. With the exception of serotype 1, the tree correlated poorly with capsular serotype, geographical site of isolation and disease outcome. The distribution of dispensable genes--genes present in more than one strain but not in all strains--was consistent with phylogeny, although horizontal gene transfer events attenuated this correlation in the case of ancient lineages. Homologous recombination, involving short stretches of DNA, was the dominant evolutionary process of the core genome of S. pneumoniae. Genetic exchange occurred both within and across the borders of the species, and S. mitis was the main reservoir of genetic diversity of S. pneumoniae. The pan-genome size of S. pneumoniae increased logarithmically with the number of strains and linearly with the number of polymorphic sites of the sampled genomes, suggesting that acquired genes accumulate proportionately to the age of clones. Most genes associated with pathogenicity were shared by all S. pneumoniae strains, but were also present in S. mitis, S. oralis and S. infantis, indicating that these genes are not sufficient to determine virulence.

conclusionsGenetic exchange with related species sharing the same ecological niche is the main mechanism of evolution of S. pneumoniae. The open pan-genome guarantees the species a quick and economical response to diverse environments.

Indexed as

Genetic VariationGenome, BacterialDNA, BacterialEvolution, MolecularGene ConversionGenes, BacterialLinkage DisequilibriumMultigene FamilyPhylogenyPolymorphism, Single NucleotideSequence AlignmentSequence Analysis, DNAStreptococcus mitisStreptococcus pneumoniaeVirulenceDNA, Bacterial

Identifiers

PMID21034474
PMCPMC3218663
OpenAlexW2002459863

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.