title: Indications for the occurrence of nitric oxide synthases in fungi and plants and the involvement in photoconidiation of Neurospora crassa.
abstract: Indications for the occurrence of nitric oxide synthases in Dictyostelium, Neurospora, Phycomyces and the leguminous plant Mucuna hassjoo as well as a physiological role of nitric oxide in Neurospora crassa are demonstrated. An exogenous nitic oxide donor, sodium nitroprusside, inhibited light-stimulated conidiation in N. crassa. Specific inhibitors of nitric oxide synthase, like the arginine derivatives NG -nitro-L-arginine (L-NA) and NG-nitro-L-arginine-methyl ester (L-NAME), enhanced conidiation in darkness nad in the light, whereas the stereoisomer D-NAME was inactive. This communication reports to our knowledge the first time the presence of enzymatic activity of nitric oxide synthase in fungi and a higher plant and an effect of nitric oxide in fungal photo-physiology.
authors: Institut für Pflanzenbiochemie, Universitãt Tübingen, Germany. helga.ninneman@uni-tuebingen.de
authors: H
authors: H
authors: Ninnemann
authors: J
authors: J
authors: Maier
mesh_terms: D003624:Darkness; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005656:Fungal Proteins / Q000037:antagonists & inhibitors / Q000378:metabolism*; D008027:Light; D009492:Neurospora crassa / Q000201:enzymology* / Q000502:physiology* / Q000528:radiation effects; D019001:Nitric Oxide Synthase / Q000037:antagonists & inhibitors / Q000378:metabolism*; D010940:Plant Proteins / Q000037:antagonists & inhibitors / Q000378:metabolism*; D013172:Spores, Fungal / Q000528:radiation effects
chemical_list: D004791:Enzyme Inhibitors; D005656:Fungal Proteins; D010940:Plant Proteins; D019001:Nitric Oxide Synthase