In our Fundamentals of Genetics lab, students perform a wide variety of labs to reinforce and extend the topics covered in lecture. I developed an active-learning lab to augment the lecture topic of mutagenesis. In this lab exercise, students determine if a compound they bring from home is a mutagen. Students are required to read extensive background material, perform research to find a potenti...

background and purpose: trichosporon is a genus of anamorphic basidiomycetous yeast which is widely distributed in nature and is found in tropical and temperate areas. the aim of this work was to study the isolation, identification and molecular analysis of trichosporon species in soil. materials and methods: in order to isolate and identify trichosporon species in soil, 30 samples were collect...

The secretion of proteinaceous toxins is a widespread characteristic in environmental and laboratory yeast isolates, a phenomenon called "killer system". The killer phenotype (K+) can be encoded by extrachromosomal genetic elements (EGEs) as double stranded DNA or RNA molecules (dsDNA, dsRNA) or in nuclear genes. The spectrum of action and the activity of killer toxins are influenced by tempera...

Increasing interest in new beer types has stimulated the search for approaches to extend the metabolic variation of brewers' yeast. Therefore, we tested two approaches using non-conventional yeast to create a beer with lower ethanol content and a complex aroma bouquet. First, the mono-culture performance was monitored of 49 wild yeast isolates of Saccharomyces cerevisiae (16 strains), Cyberlind...

The ability to identify yeast isolates by the new enzymatic RapID Yeast Plus System was compared to the ability to identify yeast isolates by the API 20C system. A total of 447 yeast isolates representing Blastoschizomyces capitatus, 17 Candida spp., 5 Cryptococcus spp., Geotrichum spp., 2 Hanseniaspora spp., Hansenula anomala, Hansenula wingei, 3 Rhodotorula spp., Saccharomyces cerevisiae, Spo...

Multiplex PCR amplification followed by either agarose gel electrophoresis (PCR-AGE) or microchip electrophoresis (PCR-ME) was used to test a total of 120 fungal strains. The internal transcribed spacer 1 (ITS1) and ITS2 regions and the 5.8S ribosomal DNA (rDNA) region of the fungi were amplified by using universal primers ITS1 and ITS4. The ITS2 region was simultaneously amplified by using uni...

A total of 61 clinical yeast isolates of Candida, Cryptococcus, Blastoschizomyces, and Saccharomyces spp. were used to compare two identification techniques, VITEK 2 and ITS2-fragment length polymorphism analysis (ITS2-FLP), with ID32C as the reference method. ID32C identified 58 isolates correctly. ITS2-FLP with Instagene DNA extraction identified 59 isolates. ITS2-FLP combined with boiling-fr...

Leavening agents are important in raising flour dough. Biological leavening agents are microorganisms that have the ability to produce carbon dioxide from the utilization of Sugar and thereby ferment and raise the dough. The present study was carried out to characterize yeast isolates isolated from selected fruits and to assess their leavening potential of wheat dough under laboratory scale. Th...

conclusions the results of antifungal susceptibility tests demonstrated that voriconazole was the most active drug against candida isolates. candida albicans is the most common yeast isolated from human blood world-wide; the unexpectedly higher rate of c. parapsilosis isolated in this study necessitates more studies with larger sample sizes in iran. results candida parapsilosis (c. parapsilosis...

Foot odour is caused by combination of sweat and bacteria. Smelly feet can lead to lack confidence discomfort. In this study, conducted on 21 probands isolate the microbes with following criteria: male, aged 18-25 years, wore shoes for 8 hours without taking them off, moist, smelly feet. Isolating from using a cotton swab. The result study found 7 isolates. Several bacteria isolates, namely: St...