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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1-2
|
| pubmed:dateCreated |
1996-3-21
|
| pubmed:abstractText |
A recombinant strain of Saccharomyces cerevisiae, containing a 2-microns-fragment-based plasmid (pYE alpha a4) was grown under non-selective conditions in continuous culture. The decrease in the population carrying the plasmid-encoded auxotrophic marker, LEU2, was examined under different physiological conditions. The difference in growth rate (delta mu) between plasmid-free and plasmid-containing cells and the rate of plasmid segregation (R) were determined using a non-linear regression technique. Loss rates were greater in defined glucose-limited cultures than in complex glucose-limited cultures. Plasmid loss was delta mu-dominated in cultures grown on defined media whereas delta mu and R were co-dominant in cultures grown on complex medium. Loss rates increased with increasing dilution rate in complex glucose-limited cultures. The reverse was found in defined glucose-limited cultures. Plasmid retention and loss kinetic determined from defined magnesium-limited cultures were not significantly different from those observed in defined glucose-limited cultures. Although plasmid retention in defined phosphate-limited culture was not significantly different from that in defined glucose-limited culture, reduced R and increased delta mu indicated an alternative physiological effect of phosphate limitation on plasmid stability.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
B
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Dec
|
| pubmed:issn |
0175-7598
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
44
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
126-32
|
| pubmed:dateRevised |
2006-5-1
|
| pubmed:meshHeading | |
| pubmed:year |
1995
|
| pubmed:articleTitle |
Effects of growth environment on recombinant plasmid stability in Saccharomyces cerevisiae grown in continuous culture.
|
| pubmed:affiliation |
Department of Microbiology, University College Galway, Ireland.
|
| pubmed:publicationType |
Journal Article
|