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Detection of genetic variation between Ophiostoma ulmi and the NAN and EAN races of O. novo‐ulmi in Switzerland using RAPD markers
Author(s) -
Hoegger P. J.,
Binz T.,
Heiniger U.
Publication year - 1996
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1996.tb00710.x
Subject(s) - dutch elm disease , biology , rapd , population , ophiostoma , dendrogram , genetics , botany , evolutionary biology , demography , genetic diversity , fungus , sociology
Summary The structure of the Ophiostoma ulmi and Ophiostoma novo‐ulmi population of Switzerland was analysed. 79 Swiss isolates were compared to reference strains from various countries. A dendrogram from RAPD profiles was produced. O. ulmi and O. novo‐ulmi were clearly separated into two major clusters. O. novo‐ulm i was further divided into the EAN and NAN races. This classification is consistent with subgroups by taxonomic parameters (growth rate, culture aspect, fertility barriers). The variation detected within the EAN and NAN races indicates a post‐epidemic situation in Switzerland. A clonal population is present only in a restricted area in mid‐eastern Switzerland, indicating a still active disease front.