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Arch Virol. 2006 Apr;151(4):697-707. Epub 2005 Nov 24.

Infection of Rosellinia necatrix with purified viral particles of a member of Partitiviridae (RnPV1-W8).

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Department of Plant Protection, National Institute of Fruit Tree Science, National Agricultural Research Organization, Tsukuba, Japan.


Isolate W8 of the white root rot fungus, Rosellinia necatrix, harbors three dsRNA segments, L1-, L2- and M-dsRNAs, and showed an irregular colony margin, slow growth, and moderate virulence. The M-dsRNA was previously shown to be the genome of a partitivirus, RnPV1-W8. Here a transfection protocol was developed for RnPV1-W8. Protoplasts of two virus-free isolates of R. necatrix were inoculated with purified viral particles using a polyethylene glycol-mediated method. Virus infection was confirmed by electrophoresis and Northern analysis. RnPV1-W8 introduced into the new host isolates was transmissible via hyphal anastomosis. However, the infection had no effect on the morphology and virulence of infected isolates of R. necatrix. This is the first report on the transfection of a partitivirus for R. necatrix.

[Indexed for MEDLINE]

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