Archives of Virology (2015) 160, 1967-1975

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Leticia Botella, Eeva J. Vainio, Jarkko Hantula, Julio J. Diez and Libor Jankovsky (2015)
Description and prevalence of a putative novel mycovirus within the conifer pathogen Gremmeniella abietina
Archives of Virology 160 (8), 1967-1975
Abstract: The European race of Gremmeniella abietina (Lagerberg) Morelet is the causal agent of stem canker and shoot blight on numerous conifers in Europe and North America. It comprises different species and biotypes in which the presence of mycoviruses has been determined. In this report, we describe the full-length sequence of the RNA-dependent RNA polymerase (RdRp) of a putative novel virus, Gremmeniella abietina RNA virus 6 (GaRV6), with 2165 nt and a GC content of 54.7 %. A BLASTp search using the deduced RdRp amino acid sequence confirmed GaRV6 to be related to members of a still unassigned virus taxon, which includes, e.g., Fusarium graminearum dsRNA mycovirus 4 (FgV-4) and the mutualistic Curvularia thermal tolerance virus (CThTV). The prevalence and genetic diversity of GaRV6 was also studied within the European race of G. abietina. We examined 162 isolates originating from Canada, the Czech Republic, Finland, Italy, Montenegro, Serbia, Spain, Switzerland, Turkey and the United States. According to direct specific reverse transcription (RT) PCR screening based on the RdRp sequence, the virus appears to be present only in Spain, where it is relatively abundant but genetically highly uniform.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Leticia Botella, Jarkko Hantula, Julio Diez

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Gremmeniella abietina Spruce (Picea) Czech Republic
Gremmeniella abietina Pine (Pinus) Finland
Gremmeniella abietina Pine (Pinus) Italy
Gremmeniella abietina Pine (Pinus) Serbia
Gremmeniella abietina Pine (Pinus) Spain (continental)
Gremmeniella abietina Pine (Pinus) Switzerland
Gremmeniella abietina Pine (Pinus) Turkey
Gremmeniella abietina Pine (Pinus) Montenegro