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Science 12 September 1975:
Vol. 189. no. 4206, pp. 890 - 891
DOI: 10.1126/science.189.4206.890
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Articles

Chestnut Blight: Biological Control by Transmissible Hypovirulence in Endothia parasitica

N. K. Van Alfen 1, R. A. Jaynes 2, S. L. Anagnostakis 2, and P. R. Day 2

1 Department of Plant Pathology and Botany, Connecticut Agricultural Experiment Station, New Haven 06504
2 Department of Genetics, Connecticut Agricultural Experiment Station

Hypovirulence in Endothia parasitica is caused by a cytoplasmic determinant that is transferred by hyphal anastomosis in host tissue and in culture. Transmission of this determinant affects the virulence of the fungus to the extent that host invasion by previously virulent isolates is limited.


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