Fig. 1From: Molecular characterization of Pseudomonas from Agaricus bisporus caps reveal novel blotch pathogens in Western EuropeIn-vitro pathogenicity assays to quantify the virulence of an isolate when inoculated on fresh mushroom caps. It describes the visual characteristics used to score the blotch symptoms as none, mild, moderate and severe in a pathogenicity assayBack to article page