First Report of the Quarantine Brown Rot Pathogen Monilinia fructicola on Imported Stone Fruits in Switzerland
2006
Monilinia fructicola, causal agent of fruit brown rot, is a quarantine pathogen in Europe (1). It presents a significant threat because of its aggressivity on flowers, shoots, and wood at low temperatures and propensity for sexual reproduction that increases potential for evolutionarily adaptation to new environments, hosts, and fungicides. It is common in North America, Japan, Australia, and South America. It occurs in orchards in France, has been detected but eradicated from Austria and Spain, and has been found on imported peach in Hungary (1,2). In Switzerland, we recently detected M. fructicola in supermarkets on imported fruit with brown rot symptoms similar to those caused by endemic M. fructigena and M. laxa. Preliminary identification was based on distinctive colony and conidial morphology on potato dextrose agar of fruit isolates. Specific identification was determined by polymerase chain reaction (PCR) (3) and sequencing the internal transcribed spacer (ITS) region. Koch's postulates were fulfi...
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