title: Genomic polymorphism of isolates of Phytophthora ramorum from Polish ornamental nurseries compared with other European and North American isolates.
abstract: We undertook an analysis of the genomic relationships between 15 isolates of Phytophthora ramorum Werres, de Cock et Man in't Veld, obtained from symptomatic plants growing in Polish ornamental nurseries, and 2 representatives of the European population and 3 of the North American population. Dendrograms were generated by UPGMA based on 786 amplification products obtained in ISSR-PCR reactions. The representatives of the European population and 13 of the "Polish" isolates formed a common cluster. The other 2 "Polish" isolates, which were found in 1998, and the 3 American representatives formed 2 separate clusters. There was no observed link between genomic distance on the basis of polymorphism and the origin of the isolates from plant species.
authors.affiliation: Research Institute of Pomology and Floriculture, Pomologiczna 18, Skierniewice, Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Wiejacha
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Trzewik
authors.forename: Leszek B
authors.initials: LB
authors.lastname: Orlikowski
authors.forename: Grazyna
authors.initials: G
authors.lastname: Szkuta
authors.forename: Teresa
authors.initials: T
authors.lastname: Orlikowska
mesh_terms: D016678:Genome; D010802:Phylogeny; D010838:Phytophthora / Q000235:genetics* / Q000302:isolation & purification*; D010935:Plant Diseases / Q000382:microbiology*; D011044:Poland; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic