European Journal of Plant Pathology (2018) 151, 919-925

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A. Rowhani, Steve Daubert, K. Arnold, M. Al Rwahnih, V. Klaassen, D. Golino and J.K. Uyemoto (2018)
Synergy between grapevine vitiviruses and grapevine leafroll viruses
European Journal of Plant Pathology 151 (4), 919-925
Abstract: An interactive relationship between vitiviruses and grapevine leafroll viruses was characterized in grapevine. Grapevine viruses A and B (GVA and GVB) were found more frequently in the presence of co-infecting Grapevine leafroll associated viruses (GLRaV-1, -2 or -3) than in their absence. The titers of the vitiviruses in co-infection with leafroll viruses were found to be higher than were their titers in the absence of leafroll virus infection. The occurrence of vitivirus-associated stem-pitting symptoms was correlated with leafroll virus co-infection. Specific pairing associations on the species level were found between different viti- and leafroll virus species: GVB was associated preferentially with GLRaV-2; GVA was associated preferentially with GLRaV-1 and GLRaV-3. In contrast to the increase in vitivirus titer seen with leafroll virus co-infection, the incidence and titer of grapevine leafroll virus appeared to be unaltered by vitivirus co-infection. The potential for a synergistic enhancement of grapevine disease in co-infected vines is discussed.
(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): Deborah A. Golino, Adib Rowhani, Jerry K. Uyemoto

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
environment - cropping system/rotation


Pest and/or beneficial records:

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


Grapevine leafroll-associated virus 3 Grapevine (Vitis)
Grapevine leafroll-associated virus 2 Grapevine (Vitis)
Grapevine virus A Grapevine (Vitis)
Grapevine virus B Grapevine (Vitis)
Grapevine leafroll-associated virus 1 Grapevine (Vitis)