title: The population genetics of maize dwarf mosaic virus in Spain.
abstract: The population genetics of maize dwarf mosaic virus (MDMV) in Spain was assessed by analysis of the P1-HC region. Restriction fragment length polymorphism analysis of 363 isolates revealed that the MDMV population consisted of 69 haplotypes. Sequence analysis of 112 isolates confirmed a high degree of nucleotide sequence diversity (0.143), which was higher for P1 than for the HC. Twelve sequences showed a single different recombination event. Selection pressure analysis revealed that the P1-HC region was under strong negative selection. The MDMV population was spatially structured but not structured temporally or by host. Phylogenetic analysis split the sequences into five major groups.
authors.affiliation: Departamento de Producción Vegetal y Ciencia Forestal, Universidad de Lleida, Rovira Roure 191, 25198 Lleida, Spain. achon@pvcf.udl.es
authors.forename: M A
authors.initials: MA
authors.lastname: Achon
authors.forename: A
authors.initials: A
authors.lastname: Larrañaga
authors.forename: N
authors.initials: N
authors.lastname: Alonso-Dueñas
mesh_terms: D001483:Base Sequence; D014644:Genetic Variation; D006239:Haplotypes; D010802:Phylogeny; D012150:Polymorphism, Restriction Fragment Length; D017800:Potyvirus / Q000145:classification / Q000235:genetics*; D016865:Reassortant Viruses; D012641:Selection, Genetic; D013030:Spain; D003313:Zea mays / Q000821:virology*