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Viruses 2018, 10(4), 204; https://doi.org/10.3390/v10040204

Variability Studies of Two Prunus-Infecting Fabaviruses with the Aid of High-Throughput Sequencing

1
Department of Plant Virology, Institute of Plant Molecular Biology, Biology Centre of the Academy of Sciences of the Czech Republic, v.v.i., 370 05 České Budějovice, Czech Republic
2
Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3
UMR 1332 Biologie du Fruit et Pathologie, INRA, University of Bordeaux, CS20032, F-33882 Villenave d’Ornon CEDEX, France
*
Author to whom correspondence should be addressed.
Received: 22 March 2018 / Revised: 12 April 2018 / Accepted: 14 April 2018 / Published: 18 April 2018
(This article belongs to the Special Issue Fruit Tree Viruses and Viroids)
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Abstract

During their lifetime, perennial woody plants are expected to face multiple infection events. Furthermore, multiple genotypes of individual virus species may co-infect the same host. This may eventually lead to a situation where plants harbor complex communities of viral species/strains. Using high-throughput sequencing, we describe co-infection of sweet and sour cherry trees with diverse genomic variants of two closely related viruses, namely prunus virus F (PrVF) and cherry virus F (CVF). Both viruses are most homologous to members of the Fabavirus genus (Secoviridae family). The comparison of CVF and PrVF RNA2 genomic sequences suggests that the two viruses may significantly differ in their expression strategy. Indeed, similar to comoviruses, the smaller genomic segment of PrVF, RNA2, may be translated in two collinear proteins while CVF likely expresses only the shorter of these two proteins. Linked with the observation that identity levels between the coat proteins of these two viruses are significantly below the family species demarcation cut-off, these findings support the idea that CVF and PrVF represent two separate Fabavirus species. View Full-Text
Keywords: plant virus; fabavirus; novel species; prunus; high-throughput sequencing; intrahost variability; phylogenetics plant virus; fabavirus; novel species; prunus; high-throughput sequencing; intrahost variability; phylogenetics
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Koloniuk, I.; Sarkisova, T.; Petrzik, K.; Lenz, O.; Přibylová, J.; Fránová, J.; Špak, J.; Lotos, L.; Beta, C.; Katsiani, A.; Candresse, T.; Maliogka, V.I. Variability Studies of Two Prunus-Infecting Fabaviruses with the Aid of High-Throughput Sequencing. Viruses 2018, 10, 204.

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