title: Cell proliferating and differentiating role of H2O2 in Sclerotium rolfsii and Sclerotinia sclerotiorum.
abstract: This study shows that the oxidant and also signal transducing H2O2 exerts a cell proliferating action at certain intracellular concentrations (around 80 nM), by inhibiting the lateral-chained and terminal sclerotial differentiation of the phytopathogenic filamentous fungi S. rolfsii and S. sclerotiorum, respectively. H2O2 also promotes sclerotial differentiation in these fungi at higher intracellular concentrations (approx. 130 nM). A cell proliferating and differentiation inhibiting effect was exerted also by the inhibitor of catalase activity aminotriazole via increase of intracellular H2O2.
authors.affiliation: Department of Biology, Section of Genetics, Cell Biology and Development, University of Patras, 26100 Patras, Greece.
authors.forename: Ioannis
authors.initials: I
authors.lastname: Papapostolou
authors.affiliation: Department of Biology, Section of Genetics, Cell Biology and Development, University of Patras, 26100 Patras, Greece.
authors.forename: Marina
authors.initials: M
authors.lastname: Sideri
authors.affiliation: Department of Biology, Section of Genetics, Cell Biology and Development, University of Patras, 26100 Patras, Greece. Electronic address: c.georgiou@upatras.gr.
authors.forename: Christos D
authors.initials: CD
authors.lastname: Georgiou
mesh_terms: D001203:Ascomycota / Q000166:cytology / Q000254:growth & development* / Q000378:metabolism*; D049109:Cell Proliferation; D006861:Hydrogen Peroxide / Q000378:metabolism*; D013172:Spores, Fungal / Q000166:cytology / Q000254:growth & development / Q000378:metabolism
chemical_list: D006861:Hydrogen Peroxide
keywords: Aminotriazole; Catalase; Hydrogen peroxide; Oxidative stress