The effects of fenpropimorph on sterol biosynthesis and growth of Saccharomyces cerevisiae were examined to pinpoint the mode of action of fungicides that inhibit ergosterol biosynthesis. Taking advantage of sterol auxotrophy and sterol permeability in mutant strains, we show that growth inhibition is strongly correlated with inhibition of sterol biosynthesis. We confirm that in vivo and at low concentrations, fenpropimorph inhibits delta 8----delta 7-sterol isomerase, and in addition, when it is used at higher concentrations, it inhibits delta 14-sterol reductase. We show also that the fungistatic effect of fenpropimorph is not due to the accumulation of abnormal sterols in treated cells but is linked to the specific inhibition of ergosterol biosynthesis, leading to the arrest of cell proliferation in the unbudded G1 phase of the cell cycle.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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