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Genome-wide expression profiling of Fusarium graminearum in response to azole fungicide treatment

ABSTRACT: In this study, a newly developed 8x15K Fusarium graminearum Agilent microarray was applied to analyze transcriptional responses to azole fungicide treatment. Comparative statistical analysis of expression profiles from treated versus untreated fungal liquid cultures uncovered 1058 genes that were significantly differentially expressed. Among the 596 genes with significantly increased transcript levels, analyses using GeneOntology and FunCat annotations detected the ergosterol-biosynthesis pathway genes as the most significantly responding category, providing statistical confirmation of the mode-of-action of azole fungicides. Transcriptional profiling of 54 genes, which encode ABC transporters in F. graminearum, suggested that several of these might be involved in reducing intracellular fungicide concentration. In addition, several genes encoding transcription factors with similarity to yeast genes known to co-ordinate fungicide responses exhibited significant differential expression.

ORGANISM(S): Fusarium graminearum

PROVIDER: GSE25114 | GEO | 2011/01/26

SECONDARY ACCESSION(S): PRJNA134509

REPOSITORIES: GEO

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Genome-wide expression profiling of Fusarium graminearum in response to azole fungicide treatment

Project description:In this study, a newly developed 8x15K Fusarium graminearum Agilent microarray was applied to analyze transcriptional responses to azole fungicide treatment. Comparative statistical analysis of expression profiles from treated versus untreated fungal liquid cultures uncovered 1058 genes that were significantly differentially expressed. Among the 596 genes with significantly increased transcript levels, analyses using GeneOntology and FunCat annotations detected the ergosterol-biosynthesis pathway genes as the most significantly responding category, providing statistical confirmation of the mode-of-action of azole fungicides. Transcriptional profiling of 54 genes, which encode ABC transporters in F. graminearum, suggested that several of these might be involved in reducing intracellular fungicide concentration. In addition, several genes encoding transcription factors with similarity to yeast genes known to co-ordinate fungicide responses exhibited significant differential expression. Hybridization was performed with cRNA samples either derived from three independent untreated or three independent azole-treated liquid cultures (12 h at 5 mg/l tebuconazole).

2011-01-26 | E-GEOD-25114 | biostudies-arrayexpress

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Project description:Chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile) is a broad spectrum fungicide used extensively in agricultural crops . The aim of this study is to analyse the effects of Chorothalonil on the gene expression profiles in zebrafish (Danio rerio), exposed to two concentrations of the fungicide in the water. Nominal concentrations were 1) Low 0.007mg/l (environmentally relevent) and 2) High 0.035mg/ml . A commercial third generation microarray for Danio rerio (Agielnt V3, 4x44k) was used to identify patterns of gene expression in male livers during a 96h toxicological assay.

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Differential hepatic gene expression in zebrafish (Danio rerio) exposed to the fungicide chlorothalonil reveals estrogenicity

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Project description:In the present study OMICs analysis was employed to investigate the early molecular responses of zebrafish embryos to exposure to the fungicide metalaxyl. Metalaxyl, a nucleic acid metabolism inhibitor according to Fungicide Resistance Action Committee (FRAC) classification, may also induce adverse effects on non-target organisms inhabiting the environment. Early molecular responses in terms of transcriptome and proteome analysis were investigated and refined to select potentially substance specific biomarker candidates for early prediction of metalaxyl toxicity in zebrafish embryos.

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Fungicide-tolerant persister formation during cryptococcal pulmonary infection

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