(...) All strains caused lesions in pepper and tomato fruit, potato tubers, and young tomato plants but varied in pathogenicity in the pseudostem of corn and in the stems of chrysanthemum, potato, and tobacco. Significant differences were found among the strains for aggressiveness in the tubers and fruit, but the relative aggressiveness in one host was not always associated with aggressiveness or pathogenicity in the other hosts. Strains isolated from a particular host were not always more aggressive than the others when inoculated to that host(...)
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Colin J. Smith (1990) studied this question.