title: Peanut stunt virus 2b cistron plays a role in viral local and systemic accumulation and virulence in Nicotiana benthamiana.
abstract: To analyze the role of the 2b protein (2bP) of Peanut stunt virus (PSV) in the viral infection cycle, we constructed PSV mutants that express either no 2bP or N-terminal-truncated 2bP. The accumulation of wild-type and mutant viruses in tobacco protoplasts indicated that the 2b cistron is not essential for viral replication. Viral accumulation in Nicotiana benthamiana plants suggested that the 2b cistron is responsible for viral accumulation in inoculated and upper leaves and has a role in virulence. The involvement of eight N-terminal amino acids of 2bP in these functions is discussed.
authors.affiliation: Laboratory of Bioresource Technology, Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 202 Bioscience Building, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan.
authors.forename: O
authors.initials: O
authors.lastname: Netsu
authors.forename: K
authors.initials: K
authors.lastname: Hiratsuka
authors.forename: S
authors.initials: S
authors.lastname: Kuwata
authors.forename: T
authors.initials: T
authors.lastname: Hibi
authors.forename: M
authors.initials: M
authors.lastname: Ugaki
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
mesh_terms: D017799:Cucumovirus / Q000235:genetics / Q000378:metabolism* / Q000472:pathogenicity*; D010935:Plant Diseases / Q000821:virology*; D018515:Plant Leaves / Q000821:virology; D011523:Protoplasts / Q000821:virology; D014026:Nicotiana / Q000821:virology*; D014764:Viral Proteins / Q000235:genetics / Q000378:metabolism*; D014774:Virulence
chemical_list: D014764:Viral Proteins