Related Experiment Video
Updated: Aug 17, 2026
Measuring Volatile and Non-volatile Antifungal Activity of Biocontrol Products
Published on: December 5, 2020
Biochemical and pharmacological factors causing induction and suppression of germination of Trichosporon beigelii
Abstract:
Trichosporon beigelii is an emerging fungal pathogen, which is morphologically characterized by blastoconidia, arthroconidia and hyphae. The non-hyphal forms of T. beigelii germinate to form hyphae in plasma in vitro and in tissues in vivo, suggesting possible pathophysiological significance of this process. Little is known, however, about the mechanisms of germination of T. beigelii. We therefore studied relevant biochemical and pharmacological factors that may regulate germination of T. beigelii. Germination was significantly enhanced by temperature at 37 degrees C, chemically defined cell culture media such as RPMI-1640, plasma, physiological pH, N-acetylglucosamine and proline. N-acetylglucosamine was equivalent to proline in inducing germination. Germination was suppressed by high concentrations of glucose, increasing inocula, low pH, and amphotericin B at achievable serum concentrations. Thus, many of the factors regulating germination of T. beigelii appear to be similar to those for Candida albicans.
Insights
This study identifies key factors influencing Trichosporon beigelii germination, a crucial step in fungal infections. Optimal conditions include 37°C, RPMI-1640 media, and specific nutrients, while high glucose and low pH inhibit growth.
Area of Science:
- Medical Mycology
- Fungal Pathogenesis
Background:
- Trichosporon beigelii is an emerging fungal pathogen.
- Its germination into hyphae is significant in infections but poorly understood.
Purpose of the Study:
- To investigate biochemical and pharmacological factors regulating T. beigelii germination.
- To elucidate mechanisms underlying fungal development and infection.
Main Methods:
- Assessing germination rates under varying conditions: temperature, media (RPMI-1640, plasma), pH, and nutrient presence (N-acetylglucosamine, proline, glucose).
- Evaluating the effect of inoculum density and antifungal agents (amphotericin B).
Main Results:
- Germination significantly enhanced by 37°C, RPMI-1640, plasma, physiological pH, N-acetylglucosamine, and proline.
- Germination suppressed by high glucose concentrations, increased inocula, low pH, and amphotericin B.
Conclusions:
- Identified key environmental and nutritional factors promoting T. beigelii germination.
- Found similarities in germination regulation between T. beigelii and Candida albicans, suggesting conserved fungal pathogenic mechanisms.
More Related Videos
09:42Isolation and Selection of Entomopathogenic Fungi from Soil Samples and Evaluation of Fungal Virulence against Insect Pests
Published on: September 28, 2021
07:21Viability Assay of Trichoderma stromaticum Conidia Inside Human Peripheral Blood Mononuclear-Derived Macrophages
Published on: October 20, 2023