Detection and partial molecular characterization of Grapevine fleck virus, Grapevine virus D, Grapevine leafroll-associated virus -5 and -6 infecting grapevines in Brazil

Fajardo, T. V. M.; Eiras, Marcelo; Nickel, Osmar; Dubiela, Carla Rosa; Souto, Eliezer de Departamento de Agronomia Rodrigues

doi:10.1590/s0103-84782012005000119

Cited by 6 publications

(4 citation statements)

References 7 publications

(14 reference statements)

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“…Symptoms are often latent in V. vinifera, however, on the indicator V. rupestris St. George, vein clearing of 3 rd or 4 th order veins is observed, causing localised translucent spots on leaves (Figure 1). Foliage deformation in the form of wrinkling, twisting and upward curling, and stunted growth are also symptoms of GFkD (Fajardo et al, 2012;Martelli, 2014). There is no known insect vector for GFkV, and it is not mechanically transmissible (Basso et al, 2017;Sabanadzovic et al, 2000).…”

Section: Grapevine Fleck Diseasementioning

confidence: 99%

“…Sites with high recombination activity (referred to as recombination hotspots) occur in areas with large sequence homologies, areas where transcription factors are located or localised towards, or at the ends of RNA molecules where termination signals are located (Fajardo et al, 2012;Nagy et al, 1999;Wierzchoslawski et al, 2004). Secondary structures of RNA molecules may also play a role, as interaction or hybridisation between mature RNA molecules may bring certain regions close enough for the RdRP-enzyme to switch between molecules (Dzianott et al, 1995;Nagy and Bujarski, 1993).…”

Section: Recombinationmentioning

confidence: 99%

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Genetic diversity and identification of putative recombination events in grapevine rupestris stem pitting-associated virus

2018

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The impact of recombination on variant classification and the use of different genomic regions to identify virus variants were investigated using a diversity study performed on grapevine rupestris stem pitting-associated virus (GRSPaV). Three surveys were conducted to investigate the genetic diversity of GRSPaV and to compare the ability of the GRSPaV coat protein and replicase domains to classify virus variants. GRSPaV variants identified in the surveys clustered into five of the six currently recognised lineages, and a seventh, previously unclassified lineage was detected. A correlation was observed between the detection of recombinant GRSPaV sequences and inconsistencies in classification when using different genome regions for analysis.

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Section: Grapevine Fleck Diseasementioning

confidence: 99%

Section: Recombinationmentioning

confidence: 99%

Genetic diversity and identification of putative recombination events in grapevine rupestris stem pitting-associated virus

2018

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“…Several GFkV-infected V. vinifera and rootstock cultivars are symptomless. GFkV causes latent infections in V. vinifera cultivars and induces typical foliar symptoms of vein clearing, leaf deformation and reduction of the vegetative growth in the sensitive indicator V. rupestris St. George (FaJaRDO et al, 2012; (Figure 1F). GFkV has no known insect vector.…”

Section: Grapevine Fleck Disease (Gfkd)mentioning

confidence: 99%

“…GFkV has no known insect vector. In Brazilian vineyards, GFkD has been reported, but its importance and damage were not specifically evaluated (BASSO et al, 2014;FaJaRDO et al, 2012).…”

Section: Grapevine Fleck Disease (Gfkd)mentioning

confidence: 99%

Grapevine Virus Diseases:economic Impact and Current Advances in Viral Prospection and Management

2017

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ABSTRACT-Grapevine (Vitis spp.) is a major vegetative propagated fruit crop with high socioeconomic importance worldwide. It is susceptible to several graft-transmitted agents that cause several diseases and substantial crop losses, reducing fruit quality and plant vigor, and shorten the longevity of vines. The vegetative propagation and frequent exchanges of propagative material among countries contribute to spread these pathogens, favoring the emergence of complex diseases. Its perennial life cycle further accelerates the mixing and introduction of several viral agents into a single plant. currently, approximately 65 viruses belonging to different families have been reported infecting grapevines, but not all cause economically relevant diseases. The grapevine leafroll, rugose wood complex, leaf degeneration and fleck diseases are the four main disorders having worldwide economic importance. In addition, new viral species and strains have been identified and associated with economically important constraints to grape production. In Brazilian vineyards, eighteen viruses, three viroids and two virus-like diseases had already their occurrence reported and were molecularly characterized. Here, we review the current knowledge of these viruses, report advances in their diagnosis and prospection of new species, and give indications about the management of the associated grapevine diseases. Index terms: Vegetative propagation, plant viruses, crop losses, berry quality, next-generation sequencing. VIROSES EM VIDEIRAS: IMPACTO ECONÔMICO E RECENTES AVANÇOS NA PROSPECÇÃO DE VÍRUS E MANEJO DAS DOENÇAS DE ORIGEM VIRALRESUMO-a videira (Vitis spp.) é propagada vegetativamente e considerada uma das principais culturas frutíferas por sua importância socioeconômica mundial. ela é suscetível a vários agentes transmitidos por meio da enxertia, os quais causam diversas doenças e significativas perdas na produtividade e produção, redução na qualidade dos frutos, no vigor da planta e na longevidade dos vinhedos. A propagação vegetativa e o frequente intercâmbio de material propagativo entre países contribuem para a disseminação destes patógenos, favorecendo a emergência de doenças complexas. Seu ciclo de vida perene acelera ainda mais a mistura e a introdução de vários agentes virais em uma mesma planta. Atualmente, aproximadamente 65 vírus pertencentes a diferentes famílias foram reportados infectando videiras, embora nem todos causem doenças economicamente relevantes. as viroses do enrolamento da folha, complexo do lenho rugoso, degenerescência e mancha-das-nervuras da videira são as quatro principais desordens que têm importância econômica mundial. Além disso, novas espécies e estirpes virais foram identificadas e associadas a limitações economicamente importantes para a produção de uvas. Em vinhedos brasileiros, dezoito espécies virais, três viroides e duas doenças semelhantes a viroses já tiveram sua ocorrência reportada e foram molecularmente caracterizados. aqui, nós revisamos o conhecimento atual dessas viroses, os recentes av...

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Grapevine leafroll-associated virus 4

Aboughanem-Sabanadzovic

Maliogka

Sabanadzovic

2017

Grapevine Viruses: Molecular Biology, Diagnostics and Management

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Detection and partial molecular characterization of Grapevine fleck virus, Grapevine virus D, Grapevine leafroll-associated virus -5 and -6 infecting grapevines in Brazil

Cited by 6 publications

References 7 publications

Genetic diversity and identification of putative recombination events in grapevine rupestris stem pitting-associated virus

Genetic diversity and identification of putative recombination events in grapevine rupestris stem pitting-associated virus

Grapevine Virus Diseases:economic Impact and Current Advances in Viral Prospection and Management

Grapevine leafroll-associated virus 4

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