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The use of some fluorescent stains for studying morphogenesis of micromycetes
1Department of Environmental Chemistry and Technology, Faculty of Chemical Technology, Slovak Chemical University, Bratislava, Czechoslovakia.
Abstract:
The use of some classical fluorochromes and optical brighteners in the fluorescence microscopy of micromycetes was investigated. Of the 16 compounds tested on slide cultures of Trichoderma viride 3 were too toxic, whereas the other stained primarily hyphae with various intensity. Reproductive structures did not stain or stained only weakly. With respect to vital staining the optical brightener Blankophor RKH exhibited most favorable properties. It did not inhibit either the growth or sporulation and stained intensively hyphae, septa and growth apices in particular. It also induced intensive fluorescence of a growing yeast culture.
Insights
This study explored fluorescent dyes for micromycete microscopy. Blankophor RKH proved effective for vital staining, highlighting fungal structures without inhibiting growth or sporulation.
Area of Science:
- Mycology
- Microscopy
- Biochemistry
Background:
- Fluorescence microscopy is crucial for visualizing fungal structures.
- Classical fluorochromes can exhibit toxicity and limited staining efficacy for micromycetes.
- Optical brighteners offer potential alternatives for vital staining.
Purpose of the Study:
- To evaluate the efficacy and toxicity of classical fluorochromes and optical brighteners for micromycete fluorescence microscopy.
- To identify optimal staining agents for visualizing fungal morphology and growth dynamics.
- To assess the impact of staining agents on fungal viability and reproductive processes.
Main Methods:
- Testing 16 different fluorochromes and optical brighteners on slide cultures of Trichoderma viride.
- Assessing compound toxicity, staining intensity of hyphae and reproductive structures.
- Evaluating the effect of the most promising compound on yeast culture fluorescence and growth.
Main Results:
- Three of the 16 tested compounds were too toxic for use.
- Most compounds stained fungal hyphae with varying intensity, but reproductive structures stained poorly.
- Blankophor RKH demonstrated favorable vital staining properties, intensely staining hyphae, septa, and apical growth without inhibiting growth or sporulation.
- Blankophor RKH also induced strong fluorescence in a growing yeast culture.
Conclusions:
- Blankophor RKH is a suitable agent for vital fluorescence microscopy of micromycetes.
- This brightener allows detailed visualization of fungal structures and growth processes.
- Blankophor RKH offers a non-toxic, effective alternative for studying fungal viability and morphology.