Cited by 208Fungal and yeast genetics researchYeasts and Rust Fungi StudiesAntifungal resistance and susceptibility

Formation of new chromosomes as a virulence mechanism in yeast Candida glabrata

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Poláková, Silvia, Blume, Christian, Zárate, Julián Álvarez, Mentel, Marek, Jørck-Ramberg, Dorte, Stenderup, Jørgen, Piškur, Jure·2009·Proceedings of the National Academy of Sciences

Abstract

In eukaryotes, the number and rough organization of chromosomes is well preserved within isolates of the same species. Novel chromosomes and loss of chromosomes are infrequent and usually associated with pathological events. Here, we analyzed 40 pathogenic isolates of a haploid and asexual yeast, Candida glabrata, for their genome structure and stability. This organism has recently become the second most prevalent yeast pathogen in humans. Although the gene sequences were well conserved among different strains, their chromosome structures differed drastically. The most frequent events reshaping chromosomes were translocations of chromosomal arms. However, also larger segmental duplications were frequent and occasionally we observed novel chromosomes. Apparently, this yeast can generate a new chromosome by duplication of chromosome segments carrying a centromere and subsequently adding novel telomeric ends. We show that the observed genome plasticity is connected with antifungal drug resistance and it is likely an advantage in the human body, where environmental conditions fluctuate a lot.

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  1. [1]Gauwerky CE, Croce CM. Chromosomal translocations in leukemia. Semin Cancer Biol. 1993;4:333–340. [PubMed] [Google Scholar]

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Authors
Poláková, S., Blume, C., Zárate, J. Á., Mentel, M., Jørck-Ramberg, D., Stenderup, J., & Piškur, J.
Affiliations
  • Lund University (SE)
  • Technical University of Denmark (DK)
  • Regionshospitalet Herning (DK)
Venue
Proceedings of the National Academy of Sciences
Published
2009-02-24
Volume
106
Issue
8
Pages
2688-2693
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2105649156
Cited by
206
References
35
Citations by year
2026: 2 · 2025: 9 · 2024: 12 · 2023: 10 · 2022: 12 · 2021: 11 · 2020: 11 · 2019: 9 · 2018: 13 · 2017: 8 · 2016: 7 · 2015: 13 · 2014: 15 · 2013: 14 · 2012: 15
FWCI
8.04
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Yeasts and Rust Fungi Studies
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
Keywords
Candida glabrata, chromosomal translocation, segmental duplication, genome plasticity, antifungal resistance, virulence, telomeres, centromere, haploid yeast, asexual reproduction, fungal pathogens
MeSH terms
Antifungal Agents, Base Sequence, Phylogeny, Virulence, Blotting, Southern, Chromosomes, Fungal, Polymerase Chain Reaction, Electrophoresis, Gel, Pulsed-Field, DNA Primers, Candida glabrata

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