Source:http://linkedlifedata.com/resource/pubmed/id/14520537
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
2003-12-10
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pubmed:abstractText |
Sodium concentrations as low as 2 mM exerted a significant protective effect on the high-pressure inactivation (160-210 MPa) of Rhodotorula rubra at pH 6.5, but not on two other yeasts tested (Schizosaccharomyces pombe and Saccharomyces cerevisiae). A piezoprotective effect of similar magnitude was observed with Li+ (2 and 10 mM), and at elevated pH (8.0-9.0), but no effect was seen with K+, Ca2+, Mg2+, Mn2+, or NH4(+). Intracellular Na+ levels in cells exposed to low concentrations of Na+ or to pH 8.0-9.0 provided evidence for the involvement of a plasma membrane Na+/H+ antiporter and a correlation between intracellular Na+ levels and pressure resistance. The results support the hypothesis that moderate high pressure causes indirect cell death in R. rubra by inducing cytosolic acidification.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
1431-0651
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
7
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
499-504
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:14520537-Cell Membrane,
pubmed-meshheading:14520537-Cells, Cultured,
pubmed-meshheading:14520537-Hydrogen-Ion Concentration,
pubmed-meshheading:14520537-Lithium,
pubmed-meshheading:14520537-Potassium,
pubmed-meshheading:14520537-Reproducibility of Results,
pubmed-meshheading:14520537-Rhodotorula,
pubmed-meshheading:14520537-Saccharomyces cerevisiae,
pubmed-meshheading:14520537-Schizosaccharomyces,
pubmed-meshheading:14520537-Sodium,
pubmed-meshheading:14520537-Sodium-Hydrogen Antiporter,
pubmed-meshheading:14520537-Species Specificity
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pubmed:year |
2003
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pubmed:articleTitle |
Na+-mediated piezoprotection in Rhodotorula rubra.
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pubmed:affiliation |
Laboratory of Food Microbiology, Katholieke Universiteit Leuven, Kasteelpark Arenberg 22, 3001 Heverlee, Belgium.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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