Comparison of Defense Responses Between Potato Cultivars Susceptible and Resistant to Andean Potato Mottle Virus

Potato genotypes that differ in their resistance to Andean Potato Mottle Virus (APMoV) were analyzed regarding their response to stress induced by APMoV inoculation. Using 1- and 2-D electrophoretic analysis, a substantial difference was observed between the patterns of induced / reduced polypeptides in the leaves of susceptible plants (cv. Delta) and resistant ones (cv. Bintje). Western blot analysis indicates the presence of a virus-inducible chitinase in the susceptible cultivar.