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Updated: Aug 16, 2026

Assay for Adhesion and Agar Invasion in S. cerevisiae
Published on: November 8, 2006
Yeast infections
1St. John's Institute of Dermatology, Guy's Hospital, London, United Kingdom.
Abstract:
Yeasts are unicellular fungi that reproduce by the process of budding in which daughter cells are produced from parents by outpouching of the cell membrane and wall, migration of cytoplasm into the new structure thus formed, and then separation from the parent cell. Yeasts that are pathogenic in humans range in size from 2 to 12 microns in diameter; most, therefore, can be engulfed by phagocytic cells. These pathogens include many of the best known of pathogenic fungi, such as the Candida species, Cryptococcus neoformans, and the lipophilic yeasts of the genus Malassezia.
Insights
Yeasts are single-celled fungi reproducing via budding. Pathogenic yeasts, like Candida and Malassezia, range from 2-12 microns, making them susceptible to phagocytic cells in humans.
Area of Science:
- Mycology
- Medical Mycology
- Cell Biology
Background:
- Yeasts are unicellular fungi.
- They reproduce asexually through budding.
- Pathogenic yeasts pose risks to human health.
Purpose of the Study:
- To describe the reproductive process of yeasts.
- To detail the size characteristics of pathogenic yeasts.
- To identify common pathogenic yeast genera.
Main Methods:
- Observation of yeast budding.
- Microscopic size analysis of pathogenic yeasts.
- Literature review of medically significant yeasts.
Main Results:
- Budding involves cell membrane and wall outpouching.
- Pathogenic yeasts range from 2 to 12 microns.
- Candida, Cryptococcus neoformans, and Malassezia are key human pathogens.
Conclusions:
- Yeast budding is a distinct reproductive mechanism.
- The size of pathogenic yeasts influences their interaction with the host immune system.
- Understanding yeast morphology and pathogenicity is crucial for clinical management.
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