title: Cre-loxP-based system for removal and reuse of selection markers in Ashbya gossypii targeted engineering.
abstract: The filamentous ascomycete Ashbya gossypii is amenable to genetic manipulation and is an excellent model system for studying eukaryotic cell biology. However, the number of selection markers in current use for both targeted gene integration and disruption in this fungus are very limited. Therefore, the Cre-loxP recombination system was adapted for use in A. gossypii and its effectiveness in recycling marker genes was demonstrated by constructing both single and double deleted Agura3 and Agade1 auxotrophic strains free of exogenous markers. In spite of its wide use in other organisms, including other Ascomycete fungi, this is the first report describing Cre-loxP-based methodology for A. gossypii, opening new perspectives for targeted engineering of this fungus with several promising biotechnological applications [corrected].
authors.affiliation: CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
authors.forename: Tatiana Q
authors.initials: TQ
authors.lastname: Aguiar
authors.affiliation: CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
authors.forename: Cláudia
authors.initials: C
authors.lastname: Dinis
authors.affiliation: CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal. Electronic address: luciliad@deb.uminho.pt.
authors.forename: Lucília
authors.initials: L
authors.lastname: Domingues
mesh_terms: D001203:Ascomycota / Q000235:genetics*; D017353:Gene Deletion; D005818:Genetic Engineering; D005819:Genetic Markers; D019426:Integrases / Q000235:genetics*; D011995:Recombination, Genetic
chemical_list: D005819:Genetic Markers; C045073:Cre recombinase; D019426:Integrases
keywords: Ashbya gossypii; Cre-loxP system; Gene targeting; Marker recycling; Recombinase expression