Positive correlations between in vitro growth rate and pathogenesis in Ophiostoma ulmi |
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Authors: | C M BRASIER J F WEBBER |
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Institution: | Forest Research Station, Alice Holt Lodge, Farnham, Surrey GU10 4LH, UK |
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Abstract: | In vitro radial growth rate was found to be positively correlated with pathogenicity in two experiments involving NAN aggressive isolates of O. ulmi. One of the correlations was detected in a sample of B mating-type, but not in equivalent A mating-type isolates. Another was detected in a sample of pathogenic phase, but not in comparable saprophytic phase isolates. The significance of these results for the vascular wilt syndrome and population biology of O. ulmi is discussed. |
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