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Genetics

Double-stranded RNA in Endothia parasitica. P. R. Day, Department of Genetics, The Connecticut Agricultural Experiment Station, New Haven, CT 06504; J. A. Dodds(2), J. E. Elliston(3), R. A. Jaynes(4), and S. L. Anagnostakis(5). (2)(3)Department of Plant Pathology, The Connecticut Agricultural Experiment Station, New Haven, CT 06504; (4)(5) Department of Genetics, The Connecticut Agricultural Experiment Station, New Haven, CT 06504. Phytopathology 67:1393-1396. Accepted for publication 2 May 1977. Copyright 1977 The American Phytopathological Society, 3340 Pilot Knob Road, St. Paul, MN 55121. All rights reserved.. DOI: 10.1094/Phyto-67-1393.

Some strains of Endothia parasitica from Europe and North America contain dsRNA with a molecular weight of approximately 3.3 106. Species of dsRNA with lower molecular weights also were present in some of these strains. The dsRNA is transmitted by hyphal anastomosis. Transmission of dsRNA components to conidia, and to other strains by hyphal anastomosis, is not always complete.

Additional keywords: hypovirulence, biological control, chestnut blight, cytoplasmic determinants.