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Updated: Jun 19, 2026

Microscopy of Fission Yeast Sexual Lifecycle
Published on: March 9, 2016
Fungal meiosis and parasexual reproduction--lessons from pathogenic yeast
Racquel K Sherwood1, Richard J Bennett
1Department of Molecular Microbiology and Immunology, Brown University, Providence, RI 02912, USA.
Abstract:
Meiosis is an integral part of sexual reproduction in eukaryotic species. It performs the dual functions of halving the genetic content in the cell, as well as increasing genetic diversity by promoting recombination between chromosome homologs. Despite extensive studies of meiosis in model yeast, it is now apparent that both the regulation of meiosis and the machinery mediating recombination have significantly diverged, even between closely related species. To highlight this, we discuss new studies on sex in Candida species, a diverse collection of hemiascomycetes that are related to Saccharomyces cerevisiae and are important human pathogens. These provide new insights into the most conserved, as well as the most plastic, aspects of meiosis, meiotic recombination, and related parasexual processes.
Insights
Meiosis, essential for sexual reproduction, halves genetic content and boosts diversity through recombination. Studies in Candida species reveal conserved and plastic aspects of meiosis and recombination, even in pathogens.
Area of Science:
- Molecular Biology
- Genetics
- Mycology
Background:
- Meiosis is crucial for sexual reproduction in eukaryotes, ensuring genetic diversity through recombination.
- While extensively studied in model yeast, meiotic processes show significant divergence across species.
- Candida species, important human pathogens, offer a unique model for studying meiotic variations.
Purpose of the Study:
- To highlight the conserved and plastic aspects of meiosis and meiotic recombination.
- To explore insights from new studies on sexual reproduction in Candida species.
- To understand the evolution of meiotic and parasexual processes in hemiascomycetes.
Main Methods:
- Comparative analysis of meiotic and recombination machinery.
- Review of recent studies on sexual reproduction in Candida species.
- Examination of genetic diversity and recombination patterns.
Main Results:
- Meiotic regulation and recombination machinery exhibit significant divergence, even in related species.
- Candida species demonstrate both conserved and highly plastic features of meiosis.
- Parasexual processes in Candida provide additional insights into genetic exchange.
Conclusions:
- Meiosis and recombination are more diverse than previously thought, even between closely related species.
- Candida species serve as a valuable model for understanding the plasticity of eukaryotic meiosis.
- Further research into Candida meiosis can illuminate conserved mechanisms and evolutionary adaptations.
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