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• W2748573758 endingPage "e0183065" @default.
• W2748573758 startingPage "e0183065" @default.
• W2748573758 abstract "A forward genetics approach was applied in order to investigate the molecular basis of morphological transition in the wheat pathogenic fungus Zymoseptoria tritici. Z. tritici is a dimorphic plant pathogen displaying environmentally regulated morphogenetic transition between yeast-like and hyphal growth. Considering the infection mode of Z. tritici, the switching to hyphal growth is essential for pathogenicity allowing the fungus the host invasion through natural openings like stomata. We exploited a previously developed Agrobacterium tumefaciens-mediated transformation (ATMT) to generate a mutant library by insertional mutagenesis including more than 10,000 random mutants. To identify genes involved in dimorphic switch, a plate-based screening system was established. With this approach eleven dimorphic switch deficient random mutants were recovered, ten of which exhibited a yeast-like mode of growth and one mutant predominantly growing filamentously, producing high amount of mycelium under different incubation conditions. Using genome walking approach previously established, the T-DNA integration sites were recovered and the disrupted genomic loci of corresponding mutants were identified and validated within reverse genetics approach. As prove of concept, two of the random mutants obtained were selected for further investigation using targeted gene inactivation. Both genes deduced were found to encode known factors, previously characterized in other fungi: Ssk1p being constituent of HOG pathway and Ade5,7p involved in de novo purine biosynthesis. The targeted mutant strains defective in these genes exhibit a drastically impaired virulence within infection assays on whole wheat plants. Moreover exploiting further physiological assays the predicted function for both gene products could be confirmed in concordance with conserved biological role of homologous proteins previously described in other fungal organisms." @default.
• W2748573758 created "2017-08-31" @default.
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• W2748573758 date "2017-08-22" @default.
• W2748573758 modified "2023-10-18" @default.
• W2748573758 title "Identification of factors involved in dimorphism and pathogenicity of Zymoseptoria tritici" @default.
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• W2748573758 doi "https://doi.org/10.1371/journal.pone.0183065" @default.
• W2748573758 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5568738" @default.
• W2748573758 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28829795" @default.
• W2748573758 hasPublicationYear "2017" @default.
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