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Home → Publications → American Chestnut Proceedings → 1978 → The Segregation of an Italian Virulent Isolate of Endothia parasitica Into H and V Types

The Segregation of an Italian Virulent Isolate of Endothia parasitica Into H and V Types

The Italian virulent isolate EP-49, reported by Day et al. (1977) to possess dsRNA is capable of giving rise to hypovirulent types. When conidia were plated, all produced typical virulent colonies. However, if conidia were irradiated with UV light, up to 20 percent of the surviving colonies were hypovirulent. Both the virulent and hypovirulent colonies possessed dsRNA. Unstable virulent strains containing dsRNA such as EP-49, which can segregate into hypovirulent forms, are here termed suppressed hypovirulent( S) strains.


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Author(s): Neal K. Van Alfen, James T. Bowman, John R. Simmons

Publication: American Chestnut Proceedings - 1978