Evidence map›Paper›PMID 23650087›Full record

ArticleEukaryotic cell2013

Discovery of a sexual cycle in Aspergillus lentulus, a close relative of A. fumigatus.

Sameira S Swilaiman, Céline M O'Gorman, S Arunmozhi Balajee, Paul S Dyer

Abstract read
In one paragraph

Article in Eukaryotic cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Article
  2. Article
  3. Global Sexual Fertility in the Opportunistic PathogenJournal of fungi (Basel, Switzerland) · 2020
    Article
  4. Fungal evolution: cellular, genomic and metabolic complexity.Biological reviews of the Cambridge Philosophical Society · 2020
    Article
  5. Aspergillus fumigatus and Aspergillosis in 2019.Clinical microbiology reviews · 2019
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Sex and the Imperfect Fungi.Microbiology spectrum · 2017
    Review
  11. Review
  12. Clinical implications of globally emerging azole resistance in Aspergillus fumigatus.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2016
    Review
  13. Review
  14. Article
  15. Review
  16. Review
  17. Aspergillus fumigatus and related species.Cold Spring Harbor perspectives in medicine · 2014
    Review
  18. Fungi associated with drug recalls and rare disease outbreaks.Journal of industrial microbiology & biotechnology · 2014
    Review
  19. Article
  20. Sexual reproduction of human fungal pathogens.Cold Spring Harbor perspectives in medicine · 2014
    Review
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

4 authors.

Sameira S SwilaimanSchool of Biology, University of Nottingham, University Park, Nottingham, United Kingdom.
Céline M O'Gorman
S Arunmozhi Balajee
Paul S Dyer

Funding

Wellcome Trust
6 · The paper itself

Abstract

Aspergillus lentulus was described in 2005 as a new species within the A. fumigatus sensu lato complex. It is an opportunistic human pathogen causing invasive aspergillosis with high mortality rates, and it has been isolated from clinical and environmental sources. The species is morphologically nearly identical to A. fumigatus sensu stricto, and this similarity has resulted in their frequent misidentification. Comparative studies show that A. lentulus has some distinguishing growth features and decreased in vitro susceptibility to several antifungal agents, including amphotericin B and caspofungin. Similar to the once-presumed-asexual A. fumigatus, it has only been known to reproduce mitotically. However, we now show that A. lentulus has a heterothallic sexual breeding system. A PCR-based mating-type diagnostic detected isolates of either the MAT1-1 or MAT1-2 genotype, and examination of 26 worldwide clinical and environmental isolates revealed similar ratios of the two mating types (38% versus 62%, respectively). MAT1-1 and MAT1-2 idiomorph regions were analyzed, revealing the presence of characteristic alpha and high-mobility-group (HMG) domain genes, together with other more unusual features such as a MAT1-2-4 gene. We then demonstrated that A. lentulus possesses a functional sexual cycle with mature cleistothecia, containing heat-resistant ascospores, being produced after 3 weeks of incubation. Recombination was confirmed using molecular markers. However, isolates of A. lentulus failed to cross with highly fertile strains of A. fumigatus, demonstrating reproductive isolation between these sibling species. The discovery of the A. lentulus sexual stage has significant implications for the management of drug resistance and control of invasive aspergillosis associated with this emerging fungal pathogen.

Indexed as

AspergillusAspergillus fumigatusCrosses, GeneticGenes, Mating Type, FungalGenetic LociGenotypeHumansMeiosisRecombination, GeneticReproductionSpores, Fungal

Identifiers

PMID23650087
PMCPMC3697472

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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.