title: RNA virus in Allomyces arbuscula: ultrastructural localization during the life-cycle.
abstract: Strain Bali I of Allomyces arbuscula is infected with a RNA virus; strain North Carolina is not. The virus appears to be avirulent, for strain Bali I showed no signs of pathogenicity. Virus aggregates occurred mostly in the cytoplasm during different stages of the gametophytic and sporophytic generations. Small intra-nuclear aggregates were found only in differentiating gametophytic hyphae and immature gametangia. In motile cells (gametes and zoospores) the aggregates are exclusively contained within the nuclear cap. This represents a reliable mechanism of transmission throughout the life-cycle.
mesh_terms: D002467:Cell Nucleus / Q000382:microbiology; D008411:Chytridiomycota / Q000254:growth & development / Q000648:ultrastructure; D003593:Cytoplasm / Q000382:microbiology; D005658:Fungi / Q000254:growth & development; D008954:Models, Biological; D010942:Plant Viruses / Q000302:isolation & purification; D012367:RNA, Viral; D013172:Spores, Fungal / Q000254:growth & development / Q000648:ultrastructure
chemical_list: D012367:RNA, Viral