Title: Transmission of Cryphonectria hypovirulence and virulence test of the transmitted isolates
Abstract: The efficiency of dsRNA transmission in Cryphonectria parasitica was tested by co-culture the dsRNA donor and recipient, and virulence of dsRNA-containing isolates was determined by inoculation in both laboratory and field. Results showed that the transmission rate ranged from 0 to 100% within different combinations. The data of relative virulence tested by inoculation indicated that the virulence of 6 transmitted isolates, 12 donors, 6 pairs of non-transmitted isolates, and 6 pairs of transmitted isolate wild type of the parent were extremely lower than that of recipient and wild type of donor. They were hypovirulent or mid-virulent, and no significant difference was observed among them. The wild type of donor possesses comparative virulence to recipient, which exhibited high virulence. The results suggested that the potentiality of the biological control for chestnut blight was higher than our expectation based on the assay data.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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