Genetic manipulation of non-conventional yeasts by conventional and non-conventional methods

✍ Scribed by Dr. J. F. T. Spencer; Dorothy M. Spencer; Nicola Reynolds

• Publisher: John Wiley and Sons
• Year: 1988
• Tongue: English
• Weight: 974 KB
• Volume: 28
• Category: Article
• ISSN: 0233-111X
• DOI: 10.1002/jobm.3620280506

✦ Synopsis

I n recent years, yeasts other than those belonging to the species Suceharomycee cerevimae and Schizoaaccharomyces pombe have become increasingly important in industrial processes. Species such as Pichia atipitie, Hanaenula polymorphu, Zygoaacchuromycea rouxii, Saccharomyces exiguua, Toru~epora delbrueckii, Yarrowia lipolytica and others whose perfect stage is known. can be manipulated genetically by classical methods, but those belonging to the genera Candida (C. utilia, C. tropicdie, C . bombicola, C. zeylanoidea, C. boidinii, etc.), Brettunomycea. Cryptmoccua. Rhodotorula, and others of the different form genera, cannot be treated in this way. Some, such as Schwanniomycea and Debaryomycea spp., which have a perfect stage, ace still difficult to manipulate by conventional means. Genetic manipulation of these yeasts can be approached from two points of view; the first involving improvement of strains by cross-breeding within one species, and the second, the introduction of desirable genes from unrelated species and even from plants or animals.