Slow growth phenotype - A possible approach to improved plasmid maintenance in Saccharomyces cerevisiae
Autor: | John W. Patching, Ronan D. O'Kennedy |
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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 |
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