Slow growth phenotype - A possible approach to improved plasmid maintenance in Saccharomyces cerevisiae

Autor: John W. Patching, Ronan D. O'Kennedy
Rok vydání: 1996
Předmět:
Zdroj: Biotechnology Letters. 18:713-718
ISSN: 1573-6776
0141-5492
DOI: 10.1007/bf00130771
Popis: Transformation-induced slow growth phenotype (SGP) in yeast is repressed in the presence of 2μm plasmids. A full 2μm-sequence-based recombinant plasmid (pJB502) was found to be more stable in a 2μm-free- [cir∘] strain of Saccharomyces cerevisiae than in a cir+ strain. This could not be attributed to differences in growth rate calculated from kinetic analysis of plasmid loss, but transformed [cir∘] isolates, which had lost the recombinant plasmid, exhibited varying degrees of SGP in batch culture. One of these isolates was outcompeted in chemostat culture by the recombinant-plasmid-containing strain, suggesting that improved plasmid maintenance can result from SGP in cir∘ hosts.
Databáze: OpenAIRE