Effects of Selected North American and Italian Cytoplasmic Hypovirulence Agents on North American and Italian Strains of Endothia Parasitica
ABSTRACT.--Each of four North American and two Italian cytoplasmic hypovir-ulence (CH) agents were transmitted on agar into each of 22 isolates of Endothia parasitica. Half of the isolates were from North America and half from Italy. Eleven vegetative compatibility groups were represented. Three of the isolates from North America and five from Italy had previously been naturally infected with CH agents and freed of these by single conidial isolation. The others had no known history of natural infection with CH agents. Each agent caused a characteristic disease in each isolate, regardless of geographic origin or previous history.
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Author(s): John E. Elliston
Publication: American Chestnut Proceedings - 1982