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ROX1 and ERG Regulation in Saccharomyces cerevisiae : Implications for Antifungal Susceptibility
Journal article   Open access

ROX1 and ERG Regulation in Saccharomyces cerevisiae : Implications for Antifungal Susceptibility

Karl W. Henry, Joseph T. Nickels and Thomas D. Edlind
Eukaryotic cell, v 1(6), pp 1041-1044
Dec 2002
PMID: 12477804
url
https://doi.org/10.1128/ec.1.6.1041-1044.2002View
Published, Version of Record (VoR)Open Access (License Unspecified) Open
url
https://doi.org/10.1128/EC.1.6.1041-1044.2002View
Published, Version of Record (VoR) Open

Abstract

ABSTRACT Yeasts respond to treatment with azoles and other sterol biosynthesis inhibitors by upregulating the expression of the ERG genes responsible for ergosterol production. Previous studies on Saccharomyces cerevisiae implicated the ROX1 repressor in ERG regulation. We report that ROX1 deletion resulted in 2.5- to 16-fold-lower susceptibilities to azoles and terbinafine. In untreated cultures, ERG11 was maximally expressed in mid-log phase and expression decreased in late log phase, while the inverse was observed for ROX1 . In azole-treated cultures, ERG11 upregulation was preceded by a decrease in ROX1 RNA. These inverse correlations suggest that transcriptional regulation of ROX1 is an important determinant of ERG expression and hence of azole and terbinafine susceptibilities.

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Web of Science research areas
Microbiology
Mycology
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