Attenuation of fungal virulence by synthetic infectious hypovirus transcripts.

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TitleAttenuation of fungal virulence by synthetic infectious hypovirus transcripts.
Publication TypeJournal Article
Year of Publication1994
AuthorsChen, B, Choi, GH, Nuss, DL
Date Published1994 Jun 17
KeywordsAscomycota, Base Sequence, DNA, Complementary, Electroporation, Molecular Sequence Data, Phenotype, Plant Diseases, RNA Viruses, RNA, Double-Stranded, RNA, Viral, Spheroplasts, Transfection, Virulence, Virus Replication

Noninfectious, cytoplasmically transmissible viral double-stranded RNAs of the genus Hypovirus cause reduced virulence (hypovirulence) in the chestnut blight fungus Cryphonectria parasitica, providing the basis for virus-mediated biological control of a fungal disease. Synthetic transcripts corresponding to a full-length hypovirus RNA coding strand are infectious when introduced into fungal spheroplasts by electroporation. Hypovirus infections were readily established in Cryphonectria parasitica and in related fungal species not previously reported to harbor viruses. These results demonstrate the use of a synthetic mycovirus transcript to expand fungal host range, thereby broadening the potential application of virus-mediated hypovirulence to control fungal pathogenesis.

Alternate JournalScience
PubMed ID8209256