Evidence map›Paper›PMID 9986828›Full record

ArticleJournal of clinical microbiology1999

Phylogenetic relationships of varieties and geographical groups of the human pathogenic fungus Histoplasma capsulatum Darling.

T Kasuga, J W Taylor, T J White

Abstract read
In one paragraph

Article in Journal of clinical microbiology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 1 pooled it
–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

72 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. The use of genetic markers in the molecular epidemiology of histoplasmosis: a systematic review.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2016
    Pooled it
  2. Article
  3. Article
  4. Review
  5. High prevalence ofFrontiers in veterinary science · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Genotypic diversity, virulence, and molecular genetic tools inMicrobiology and molecular biology reviews : MMBR · 2024
    Review
  10. Article
  11. Phenotypic characterization of cryptic species in the fungal pathogenbioRxiv : the preprint server for biology · 2024
    Article
  12. Review
  13. A Fatal Case of Disseminated Histoplasmosis byPathogens (Basel, Switzerland) · 2023
    Article
  14. Genetic Diversity of Human Fungal Pathogens.Current clinical microbiology reports · 2023
    Article
  15. Article
  16. Article
  17. Molecular Detection ofTransboundary and emerging diseases · 2023
    Article
  18. Article
  19. Considerations about the Geographic Distribution ofApplied and environmental microbiology · 2022
    Review
  20. Article

12 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

3 authors.

T KasugaRoche Molecular Systems, Alameda, California 94501, USA. takao.kasuga@roche.com
J W Taylor
T J White

Funding

GENETIC VARIATION IN FUNGAL LUNG PATHOGENS AND HOSTSR01HL055953 · NHLBI · UNIVERSITY OF CALIFORNIA BERKELEY · PI TAYLOR, JOHN W. · 1995 to 1998
–
NHLBI NIH HHS HL55953
6 · The paper itself

Abstract

The phylogeny of 46 geographically diverse Histoplasma capsulatum isolates representing the three varieties capsulatum, duboisii, and farciminosum was evaluated using partial DNA sequences of four protein coding genes. Parsimony and distance analysis of the separate genes were generally congruent and analysis of the combined data identified six clades: (i) class 1 North American H. capsulatum var. capsulatum, (ii) class 2 North American H. capsulatum var. capsulatum, (iii) Central American H. capsulatum var. capsulatum, (iv) South American H. capsulatum var. capsulatum group A, (v) South American H. capsulatum var. capsulatum group B, and (vi) H. capsulatum var. duboisii. Although the clades were generally well supported, the relationships among them were not resolved and the nearest outgroups (Blastomyces and Paracoccidioides) were too distant to unequivocally root the H. capsulatum tree. H. capsulatum var. farciminosum was found within the South American H. capsulatum var. capsulatum group A clade. With the exception of the South American H. capsulatum var. capsulatum group A clade, genetic distances within clades were an order of magnitude lower than those between clades, and each clade was supported by a number of shared derived nucleotide substitutions, leading to the conclusion that each clade was genetically isolated from the others. Under a phylogenetic species concept based on possession of multiple shared derived characters, as well as concordance of four gene genealogies, H. capsulatum could be considered to harbor six species instead of three varieties.

Indexed as

Genes, FungalPhylogenyAIDS-Related Opportunistic InfectionsAnimalsBase SequenceDNA, FungalFungal ProteinsGenotypeGeographyHistoplasmaHistoplasmosisHumansMolecular Sequence DataNorth AmericaPanamaPolymerase Chain ReactionDNA, FungalFungal Proteins

Identifiers

PMID9986828
PMCPMC84508

What OpenQuestion holds

Textmetadata
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.