title: Molecular characterisation of dicot-infecting mastreviruses from Australia.
abstract: Monocotyledonous and dicotyledonous plant infecting mastreviruses threaten various agricultural systems throughout Africa, Eurasia and Australasia. In Australia three distinct mastrevirus species are known to infect dicotyledonous hosts such as chickpea, bean and tobacco. Amongst 34 new "dicot-infecting" mastrevirus full genome sequences obtained from these hosts we discovered one new species, four new strains, and various variants of previously described mastrevirus species. Besides providing additional support for the hypothesis that evolutionary processes operating during dicot-infecting mastrevirus evolution (such as patterns of pervasive homologous and non-homologous recombination, and strong purifying selection acting on all genes) have mostly mirrored those found in their monocot-infecting counterparts, we find that the Australian dicot-infecting viruses display patterns of phylogeographic clustering reminiscent of those displayed by monocot infecting mastrevirus species such as Panicum streak virus and Maize streak virus.
authors.affiliation: School of Biological Sciences, University of Canterbury, Ilam, Christchurch 8140, New Zealand.
authors.forename: James
authors.initials: J
authors.lastname: Hadfield
authors.forename: John E
authors.initials: JE
authors.lastname: Thomas
authors.forename: Mark W
authors.initials: MW
authors.lastname: Schwinghamer
authors.forename: Simona
authors.initials: S
authors.lastname: Kraberger
authors.forename: Daisy
authors.initials: D
authors.lastname: Stainton
authors.forename: Anisha
authors.initials: A
authors.lastname: Dayaram
authors.forename: Judith N
authors.initials: JN
authors.lastname: Parry
authors.forename: Daniel
authors.initials: D
authors.lastname: Pande
authors.forename: Darren P
authors.initials: DP
authors.lastname: Martin
authors.forename: Arvind
authors.initials: A
authors.lastname: Varsani
mesh_terms: D001315:Australia; D016000:Cluster Analysis; D019143:Evolution, Molecular; D017791:Geminiviridae / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification*; D008969:Molecular Sequence Data; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology; D010944:Plants / Q000821:virology; D017422:Sequence Analysis, DNA