Evidence map›Paper›PMID 19478871›Full record

ArticlePLoS pathogens2009

Rapid global expansion of the fungal disease chytridiomycosis into declining and healthy amphibian populations.

Timothy Y James, Anastasia P Litvintseva, Rytas Vilgalys, Jess A T Morgan, John W Taylor, Matthew C Fisher, Lee Berger, Ché Weldon, Louis du Preez, Joyce E Longcore

Abstract read
In one paragraph

Article in PLoS pathogens, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
–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

76 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Loss of Heterozygosity and Its Importance in Evolution.Journal of molecular evolution · 2023
    Review
  9. Article
  10. Article
  11. Endemic Lineages ofFrontiers in veterinary science · 2022
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Chytrid fungi and global amphibian declines.Nature reviews. Microbiology · 2020
    Review
  17. Review
  18. Article
  19. Article
  20. Article

16 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

10 authors.

Timothy Y JamesDepartment of Biology, Duke University, Durham, NC, USA. tyjames@umich.edu
Anastasia P Litvintseva
Rytas Vilgalys
Jess A T Morgan
John W Taylor
Matthew C Fisher
Lee Berger
Ché Weldon
Louis du Preez
Joyce E Longcore

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The fungal disease chytridiomycosis, caused by Batrachochytrium dendrobatidis, is enigmatic because it occurs globally in both declining and apparently healthy (non-declining) amphibian populations. This distribution has fueled debate concerning whether, in sites where it has recently been found, the pathogen was introduced or is endemic. In this study, we addressed the molecular population genetics of a global collection of fungal strains from both declining and healthy amphibian populations using DNA sequence variation from 17 nuclear loci and a large fragment from the mitochondrial genome. We found a low rate of DNA polymorphism, with only two sequence alleles detected at each locus, but a high diversity of diploid genotypes. Half of the loci displayed an excess of heterozygous genotypes, consistent with a primarily clonal mode of reproduction. Despite the absence of obvious sex, genotypic diversity was high (44 unique genotypes out of 59 strains). We provide evidence that the observed genotypic variation can be generated by loss of heterozygosity through mitotic recombination. One strain isolated from a bullfrog possessed as much allelic diversity as the entire global sample, suggesting the current epidemic can be traced back to the outbreak of a single clonal lineage. These data are consistent with the current chytridiomycosis epidemic resulting from a novel pathogen undergoing a rapid and recent range expansion. The widespread occurrence of the same lineage in both healthy and declining populations suggests that the outcome of the disease is contingent on environmental factors and host resistance.

Indexed as

AmphibiansAnimalsBase SequenceChytridiomycotaDisease OutbreaksDNA, ViralGenome, MitochondrialGenotypeLoss of HeterozygosityMycosesPolymorphism, GeneticRana catesbeianaRecombination, GeneticDNA, Viral

Identifiers

PMID19478871
PMCPMC2680619

What OpenQuestion holds

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Registered trials

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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.