Related Experiment Video
Updated: Oct 2, 2026

Sexual Development and Ascospore Discharge in Fusarium graminearum
Published on: March 29, 2012
Green and brown colour effects in tremellaceous yeast fungi on Staib agar
1Institute for Biochemistry and Physiology of Microorganisms, Pushchino, Russia.
Abstract:
Fifty-eight species of basidiomycetous yeast fungi were examined for green and brown colour effects (GCE, BCE) on Staib agar (Guizotia abyssinica creatinine agar). In addition to 9% of Cryptococcus laurentii strains tested, only Cryptococcus podzolicus was GCE-positive. Out of 14 strains of this species, 13 showed a GCE and four showed a BCE. All GCE-positive strains utilized creatinine and creatine as a source of nitrogen but not of carbon. None of these strains could grow at 37 degrees C. Unlike Cr. laurentii, no strains of Cr. podzolicus assimilated glycine as a source of carbon. No association was found to exist between GCE and killer activity. Some tremellaceous creatinine-negative species (Cryptococcus gastricus) showed a BCE whereas some sporidiobolaceous creatinine-positive yeasts (Leucosporidium, Rhodotorula) produced neither GCE nor BCE.
More Related Videos
07:44Application of Membrane and Cell Wall Selective Fluorescent Dyes for Live-Cell Imaging of Filamentous Fungi
Published on: November 28, 2019
11:48Microscopy Techniques for Interpreting Fungal Colonization in Mycoheterotrophic Plants Tissues and Symbiotic Germination of Seeds
Published on: May 17, 2022
Related Concept Videos
Fixation and Sectioning
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
Simple Staining Technique
Differential Staining Technique
Special Staining Techniques