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The Industrial Yeasts Collection DBVPG offers a complete service of yeast strain identification using techniques of molecular taxonomy [sequencing of the D1/D2 domains belonging to the large subunit (LSU) of 26S rRNA gene and of Internal Transcribed Spacers (ITS 1 & 2 region) including the 5.8S rRNA gene]. Results are usually available within a few weeks.
Alternatively, a procedure of conventional taxonomy [including examination of colony and cell morphology by microphotography, sexual reactions and conventional physiological tests as indicated in the latest monograph on yeast: The Yeast. A Taxonomic Study, Kurtzman et al. (eds.), 2011] can be approached upon request. In this case Results are usually available within several weeks depending upon the species involved.
Strains to be identified should be supplied in pure culture and accompanied with as much information as possible regarding their origin and nutritional requirements. They should be supplied on the annexation forms, which will be sent upon request. 
If the strain should prove to be a mixed culture, the supplier will be obliged to pay an additional charge for isolation procedures performed at DBVPG. Any cultures contaminated by mites will not be processed and will be destroyed immediately so as not to compromise the integrity of the cultures of the DBVPG collection.
Strains for identification may be supplied as fresh slants or in lyophilized form. Please take care in packaging them so that they arrive in good condition. Unless otherwise instructed, DBVPG will assign a progressive collection number to the strain upon arrival and it will be incorporated into the collection.
Results of the identification will normally be available within a few weeks of arrival of the strain. Exceptions may occur for difficult strains, particularly basidiomycetes.


 

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