Evidence map›Paper›PMID 18628950›Full record

ArticlePloS one2008

Evolution of Streptococcus pneumoniae and its close commensal relatives.

Mogens Kilian, Knud Poulsen, Trinelise Blomqvist, Leiv S Håvarstein, Malene Bek-Thomsen, Hervé Tettelin, Uffe B S Sørensen

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 145 papers.

0numbers the graph read from it
0cells of the map it votes in
145citing papers in PubMed
13.4field-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

145 citing papers in PubMed, 283 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Review
  4. Article
  5. Article
  6. mBio · 2026
    Article
  7. Article
  8. LytF contributes to pilus extrusion during natural competence inbioRxiv : the preprint server for biology · 2025
    Article
  9. Article
  10. Article
  11. Re-evaluation of boundaries ofInternational journal of systematic and evolutionary microbiology · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Microbiology (Reading, England) · 2022
    Article
  18. EnteroBase: hierarchical clustering of 100 000s of bacterial genomes into species/subspecies and populations.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  19. Article
  20. Streptococcus pneumoniae colonization in health care professionals at a tertiary university pediatric hospital.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2022
    Article

85 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

7 authors at 4 institutions in 3 countries.

Mogens KilianInstitute of Medical Microbiology and Immunology, Aarhus University, Aarhus, Denmark. kilian@microbiology.au.dk
Knud Poulsen
Trinelise Blomqvist
Leiv S Håvarstein
Malene Bek-Thomsen
Hervé Tettelin
Uffe B S Sørensen
Aarhus University · DKAarhus University Hospital · DKNorwegian University of Life Sciences · NOUniversity of Maryland, Baltimore · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Streptococcus pneumoniae is a member of the Mitis group of streptococci which, according to 16S rRNA-sequence based phylogenetic reconstruction, includes 12 species. While other species of this group are considered prototypes of commensal bacteria, S. pneumoniae is among the most frequent microbial killers worldwide. Population genetic analysis of 118 strains, supported by demonstration of a distinct cell wall carbohydrate structure and competence pheromone sequence signature, shows that S. pneumoniae is one of several hundred evolutionary lineages forming a cluster separate from Streptococcus oralis and Streptococcus infantis. The remaining lineages of this distinct cluster are commensals previously collectively referred to as Streptococcus mitis and each represent separate species by traditional taxonomic standard. Virulence genes including the operon for capsule polysaccharide synthesis and genes encoding IgA1 protease, pneumolysin, and autolysin were randomly distributed among S. mitis lineages. Estimates of the evolutionary age of the lineages, the identical location of remnants of virulence genes in the genomes of commensal strains, the pattern of genome reductions, and the proportion of unique genes and their origin support the model that the entire cluster of S. pneumoniae, S. pseudopneumoniae, and S. mitis lineages evolved from pneumococcus-like bacteria presumably pathogenic to the common immediate ancestor of hominoids. During their adaptation to a commensal life style, most of the lineages gradually lost the majority of genes determining virulence and became genetically distinct due to sexual isolation in their respective hosts.

Indexed as

AlgorithmsBacterial ProteinsCell LineageCluster AnalysisDNAEvolution, MolecularGenetics, PopulationGenome, BacterialModels, GeneticPeptidesPhylogenyPolymorphism, GeneticRecombination, GeneticRNA, Ribosomal, 16SStreptococcus pneumoniaeBacterial Proteinscompetence factor, StreptococcusDNAPeptidesRNA, Ribosomal, 16S

Identifiers

PMID18628950
PMCPMC2444020
OpenAlexW2029047684

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.