Zone de Texte: Detection methods, by which no isolate of X. fragariae is obtained. As compensation it is suggested, that two assays with different biological principle have to be positive to declare a sample as positive. Serological assays crossreactions with available antisera for X. fragariae are common (immunofluorescence is suitable for in-vitro-plants) nested PCR sensitive and specific Zone de Texte: Xanthomonas fragariae Zone de Texte: Dr. E. Moltmann

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