title: [The influence of urea, ammonia and nitrate as they affect growth and viability of Trichophyton verrucosum].
abstract: Six strains of Trichophyton verrucosum were used in a test to determine effects of urea and sodium nitrate on their growth. Despite having urease activity, the strains failed to utilize the urea and sodium nitrate for their growth. Moreover, the organisms were killed if large amounts of these nitrogen compounds and ammonia were added to the medium. These nitrogen compounds, distributed in cattle breeding soil, inhibited the growth of T. verrucosum. Thus, soil in cattle breeding environments does not seem to be a reservoir of this pathogen.
authors.affiliation: Department of Veterinary Microbiology, Miyazaki University, 1-1 Gakuen-kibanadai-nishi, Miyazaki 889-2192, Japan.
authors.forename: Junko
authors.initials: J
authors.lastname: Kosuge
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Goto
authors.forename: Toshiharu
authors.initials: T
authors.lastname: Shinjo
authors.forename: Noritoshi
authors.initials: N
authors.lastname: Ri
authors.forename: Kosuke
authors.initials: K
authors.lastname: Takatori
mesh_terms: D000641:Ammonia / Q000494:pharmacology*; D000818:Animals; D002417:Cattle; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000494:pharmacology*; D014249:Trichophyton / Q000187:drug effects / Q000254:growth & development* / Q000502:physiology; D014508:Urea / Q000494:pharmacology*
chemical_list: D009566:Nitrates; D000641:Ammonia; D014508:Urea