title: Diversity and evolution of potato mop-top virus.
abstract: Nearly complete sequences of RNA-CP and 3'-proximal RNA-TGB were determined for 43 samples of potato mop-top virus (PMTV) originating from potato tubers and field soil from Sweden, Denmark and the USA. The results showed limited diversity and no strict geographical grouping, suggesting only a few original introductions of PMTV from the Andes. Two distinguishable types of RNA-CP and RNA-TGB were found in the samples, but no specific combination of them correlated with spraing symptoms in tubers. Lack of positive selection in the coding sequences indicates that there is no specific molecular adaptation of PMTV to new vectors or hosts.
authors.affiliation: Department of Plant Biology, Uppsala BioCenter, Linnean Center of Plant Biology in Uppsala, Swedish University of Agricultural Sciences, Box 7080, 750 07, Uppsala, Sweden.
authors.forename: Ulrike
authors.initials: U
authors.lastname: Beuch
authors.forename: Sofia
authors.initials: S
authors.lastname: Berlin
authors.forename: Jonas
authors.initials: J
authors.lastname: Åkerblom
authors.forename: Mogens
authors.initials: M
authors.lastname: Nicolaisen
authors.forename: Steen Lykke
authors.initials: SL
authors.lastname: Nielsen
authors.forename: James M
authors.initials: JM
authors.lastname: Crosslin
authors.forename: Philip B
authors.initials: PB
authors.lastname: Hamm
authors.forename: Johanna
authors.initials: J
authors.lastname: Santala
authors.forename: Jari P T
authors.initials: JP
authors.lastname: Valkonen
authors.forename: Anders
authors.initials: A
authors.lastname: Kvarnheden
mesh_terms: D016000:Cluster Analysis; D003718:Denmark; D019143:Evolution, Molecular; D023061:Gene Order; D008969:Molecular Sequence Data; D058974:Phylogeography; D010935:Plant Diseases / Q000821:virology*; D010942:Plant Viruses / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D012328:RNA Viruses / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D012367:RNA, Viral / Q000235:genetics; D012641:Selection, Genetic; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D011198:Solanum tuberosum / Q000821:virology*; D013548:Sweden; D014481:United States
chemical_list: D012367:RNA, Viral