Transmission electron microscopy of yeast

Area of Science:

• Microbiology
• Cell Biology
• Microscopy

Background:

• Transmission electron microscopy (TEM) is crucial for yeast analysis.
• Sample preparation challenges can hinder yeast TEM studies.
• Standard laboratory equipment can facilitate yeast sample preparation.

Purpose of the Study:

• To provide an overview of TEM sample preparation methods for yeast.
• To detail protocols for chemical fixation in yeast ultrastructural analysis and immunolabeling.
• To guide researchers in optimizing yeast sample preparation for TEM.

Main Methods:

• Chemical fixation using glutaraldehyde, potassium permanganate, or osmium.
• Enzymatic digestion of the yeast cell wall prior to osmium postfixation.
• Embedding in Spurr's resin for ultrastructure and LR White resin for immunolabeling.

Main Results:

• Well-fixed and infiltrated yeast samples are achievable with common lab resources.
• Freeze substitution offers high-quality fixation but requires specialized equipment.
• Standard protocols enable successful ultrastructural and immunolabeling analyses of yeast.

Conclusions:

• Effective TEM sample preparation for yeast is feasible for most laboratories.
• Detailed protocols facilitate ultrastructural and immunolabeling studies of yeast.
• TEM is a powerful tool for investigating yeast molecular organization.