Evidence map›Paper›PMID 26507799›Full record

ArticleGenome biology and evolution2015

Chlamydiaceae Genomics Reveals Interspecies Admixture and the Recent Evolution of Chlamydia abortus Infecting Lower Mammalian Species and Humans.

Sandeep J Joseph, Hanna Marti, Xavier Didelot, Santiago Castillo-Ramirez, Timothy D Read, Deborah Dean

Open access · goldAbstract read
In one paragraph

Article in Genome biology and evolution, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Current status and future directions ofFrontiers in veterinary science · 2026
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  4. Multiplex Real-time PCR Assay for the Detection of allAnnals of laboratory medicine · 2023
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  6. Clinical identification and microbiota analysis ofFrontiers in cellular and infection microbiology · 2023
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  7. Genome organization and genomics inFrontiers in cellular and infection microbiology · 2023
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  8. Pathogens (Basel, Switzerland) · 2022
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  9. Article
  10. The Impact of Lateral Gene Transfer inFrontiers in cellular and infection microbiology · 2022
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  11. Completing the Genome Sequence ofPathogens (Basel, Switzerland) · 2021
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  14. Comparative Genome Analysis of 33Pathogens (Basel, Switzerland) · 2020
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  15. Occurrence ofPathogens (Basel, Switzerland) · 2020
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  19. Frontiers in microbiology · 2017
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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

6 authors at 4 institutions in 3 countries.

Sandeep J JosephDivision of Infectious Diseases, Department of Medicine, Emory University School of Medicine.
Hanna MartiCenter for Immunobiology and Vaccine Development, Children's Hospital Oakland Research Institute, Oakland, California.
Xavier DidelotDepartment of Infectious Disease Epidemiology, Imperial College, London, United Kingdom.
Santiago Castillo-RamirezPrograma de Genomica Evolutiva, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México.
Timothy D ReadDivision of Infectious Diseases, Department of Medicine, Emory University School of Medicine Department of Human Genetics, Emory University School of Medicine.
Deborah DeanCenter for Immunobiology and Vaccine Development, Children's Hospital Oakland Research Institute, Oakland, California Department of Medicine, University of California, San Francisco Joint Graduate Program in Bioengineering, University of California, San Francisco, and University of California, Berkeley ddean@chori.org.
Emory University · USImperial College London · GBUniversidad Nacional Autónoma de México · MXUniversity of California, Berkeley · US

Funding

Multiplex diagnostic for biothreat C. psittaci & non-threat respiratory pathogensR01AI098843 · NIAID · CHILDREN'S HOSPITAL & RES CTR AT OAKLAND · PI DEAN, DEBORAH ANNE, READ, TIMOTHY D. · 2012 to 2016
$5.5M
Medical Research Council MR/K010174/1NIAID NIH HHS R01 AI098843
6 · The paper itself

Abstract

Chlamydiaceae are obligate intracellular bacteria that cause a diversity of severe infections among humans and livestock on a global scale. Identification of new species since 1989 and emergence of zoonotic infections, including abortion in women, underscore the need for genome sequencing of multiple strains of each species to advance our knowledge of evolutionary dynamics across Chlamydiaceae. Here, we genome sequenced isolates from avian, lower mammalian and human hosts. Based on core gene phylogeny, five isolates previously classified as Chlamydia abortus were identified as members of Chlamydia psittaci and Chlamydia pecorum. Chlamydia abortus is the most recently emerged species and is a highly monomorphic group that lacks the conserved virulence-associated plasmid. Low-level recombination and evidence for adaptation to the placenta echo evolutionary processes seen in recently emerged, highly virulent niche-restricted pathogens, such as Bacillus anthracis. In contrast, gene flow occurred within C. psittaci and other Chlamydiaceae species. The C. psittaci strain RTH, isolated from a red-tailed hawk (Buteo jamaicensis), is an outlying strain with admixture of C. abortus, C. psittaci, and its own population markers. An average nucleotide identity of less than 94% compared with other Chlamydiaceae species suggests that RTH belongs to a new species intermediary between C. psittaci and C. abortus. Hawks, as scavengers and predators, have extensive opportunities to acquire multiple species in their intestinal tract. This could facilitate transformation and homologous recombination with the potential for new species emergence. Our findings indicate that incubator hosts such as birds-of-prey likely promote Chlamydiaceae evolution resulting in novel pathogenic lineages.

Indexed as

Biological EvolutionGenome, BacterialPhylogenyAnimalsBayes TheoremBirdsChlamydiaChlamydophila psittaciDNA, BacterialFemaleHumansMammalsModels, GeneticSequence Analysis, DNADNA, BacterialChlamydiaceaecomparative genomicshomologous recombinationmolecular clockpopulation structurered-tailed hawk

Identifiers

PMID26507799
PMCPMC4994753
OpenAlexW2172604359

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.