title: Viruses of the white root rot fungus, Rosellinia necatrix.
abstract: Rosellinia necatrix is a filamentous ascomycete that is pathogenic to a wide range of perennial plants worldwide. An extensive search for double-stranded RNA of a large collection of field isolates led to the detection of a variety of viruses. Since the first identification of a reovirus in this fungus in 2002, several novel viruses have been molecularly characterized that include members of at least five virus families. While some cause phenotypic alterations, many others show latent infections. Viruses attenuating the virulence of a host fungus to its plant hosts attract much attention as agents for virocontrol (biological control using viruses) of the fungus, one of which is currently being tested in experimental fields. Like the Cryphonectria parasitica/viruses, the R. necatrix/viruses have emerged as an amenable system for studying virus/host and virus/virus interactions. Several techniques have recently been developed that enhance the investigation of virus etiology, replication, and symptom induction in this mycovirus/fungal host system.
authors.affiliation: Institute of Plant Science and Resources (IPSR), Okayama University, Chuou, Kurashiki, Okayama, Japan.
authors.forename: Hideki
authors.initials: H
authors.lastname: Kondo
authors.forename: Satoko
authors.initials: S
authors.lastname: Kanematsu
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Suzuki
mesh_terms: D008967:Molecular Biology / Q000379:methods; D009172:Mycology / Q000379:methods; D010572:Pest Control, Biological / Q000379:methods; D010935:Plant Diseases / Q000517:prevention & control; D012328:RNA Viruses / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D014773:Virology / Q000379:methods; D013098:Xylariales / Q000472:pathogenicity / Q000821:virology*