However, the AgriStriphad previously shown positive detection for some strainsof E. pyrifoliae and E. piriflorinigrans (Braun-Kiewnicket al. 2011). These findings suggest that the E. amylovoraspecific antibodies can cross-react to the proteins from differentstrains in other Erwinia species, leading to their positivedetection. In comparison, the sensitivity of immunoassayswas lower than the LAMP and qPCR diagnosticmethods. The immunoassay antibodies probably need ahigher amount of protein from the bacterial samples to bindand show detection signals. In contrast, a very low amountof bacterial DNA could be enough as a template for successfulamplification in LAMP and qPCR. We observedamplification curves with ×103 cfu/ml in LAMP andqPCR assays (Fig. 3; Fig. 5).