Journal
FOLIA MICROBIOLOGICA
Volume 52, Issue 3, Pages 223-229Publisher
FOLIA MICROBIOLOGICA
DOI: 10.1007/BF02931302
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Sacchoroinyces cerevisiae pel1 and erd1 mutants deficient in the biosynthesis of mitochondrial phosphatidylglycerol (PG) and cardiolipin (CL) as well as Kluyveromyces lactis mutants impaired in the respiratory chain function (RCF) containing dysfunctional mitochondria show altered sensitivity to metabolic inhibitors. The S. cerevisiae pell mutant displayed increased sensitivity to cycloheximide, chloramphenicol, oligomycin and the cell-wall perturbing agents caffeine, caspofungin and hygromycin. On the other hand, the pell mutant was less sensitive to fluconazole, similarly as the K. lactis mutants impaired in the function of mitochondrial cytochromes. Mitochondrial dysfunction resulting either from the absence of PG and CL or impairment of the RCF presumably renders the cells more resistant to fluconazole. The increased tolerance of K. lactis respiratory chain mutants to amphotericin B, caffeine and hygromycin is probably related to a modification of the cell wall.
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