Field Performance and Wine Quality Modification in a Clone of<i>Vitis vinifera</i>cv. Dolcetto after GLRaV-3 Elimination

Mannini, F.; Mollo, Alessandra; Credi, R.

doi:10.5344/ajev.2011.11020

Cited by 40 publications

(29 citation statements)

References 6 publications

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“…4). One of the major impacts of GLD in red-fruited V. vinifera cultivars is asynchronous fruit ripening and poor color development of berries (4,69,140,161), altered fruit maturity indices (soluble solids or °Brix, titratable acidity or TA, and pH), and modifications of individual and total anthocyanins, total phenolics, as well as total tannins (4,69,96,97,104,161,167).…”

Section: Impact Of Gldmentioning

confidence: 99%

Grapevine Leafroll: A Complex Viral Disease Affecting a High-Value Fruit Crop

et al. 2014

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Grapevine (Vitis spp.) is one of the most widely grown fruit crops in the world. It is a deciduous woody perennial vine for which the cultivation of domesticated species began approximately 6,000 to 8,000 years ago in the Near East. Grapevines are broadly classified into red- and white-berried cultivars based on their fruit skin color, although yellow, pink, crimson, dark blue, and black-berried cultivars also exist. Grapevines can be subject to attacks by many different pests and pathogens, including graft-transmissible agents such as viruses, viroids, and phytoplasmas. Among the virus and virus-like diseases, grapevine leafroll disease (GLD) is by far the most widespread and economically damaging viral disease of grapevines in many regions around the world. The global expansion of the grape and wine industry has seen a parallel increase in the incidence and economic impact of GLD. Despite the fact that GLD was recognized as a potential threat to grape production for several decades, our knowledge of the nature of the disease is still quite limited due to a variety of challenges related to the complexity of this virus disease, the association of several distinct GLD-associated viruses, and contrasting symptoms in red- and white-berried cultivars. In view of the growing significance of GLD to wine grape production worldwide, this feature article provides an overview of the state of knowledge on the biology and epidemiology of the disease and describes management strategies currently deployed in vineyards.

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Section: Impact Of Gldmentioning

confidence: 99%

Grapevine Leafroll: A Complex Viral Disease Affecting a High-Value Fruit Crop

et al. 2014

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“…Cabernet Franc, Cabernet Sauvignon, Merlot (Borgo et al, 2003), Albariño (Cabaleiro et al, 1999), Chardonnay (Komar et al, 2007), and Dolcetto (Mannini et al, 2012). Wines made from fruits harvested on GLRaV-3-infected cvs.…”

Section: Host-pathogen Interactionsmentioning

confidence: 99%

“…GLRaV-3 causes a drastic reduction in leaf photosynthesis during post-veraison (Gutha et al, 2012; Mannini et al, 2012) and in free amino acids such as valine and methionine, or glutamic acid in berries of V. vinifera cv. Pinot noir (Lee et al, 2009) but an increased skin and pulp weight (Lee and Martin, 2009).…”

Section: Host-pathogen Interactionsmentioning

confidence: 99%

Grapevine leafroll-associated virus 3

Maree¹,

Almeida²,

Bester³

et al. 2013

Front. Microbiol.

203

187

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Grapevine leafroll disease (GLD) is one of the most important grapevine viral diseases affecting grapevines worldwide. The impact on vine health, crop yield, and quality is difficult to assess due to a high number of variables, but significant economic losses are consistently reported over the lifespan of a vineyard if intervention strategies are not implemented. Several viruses from the family Closteroviridae are associated with GLD. However, Grapevine leafroll-associated virus 3 (GLRaV-3), the type species for the genus Ampelovirus, is regarded as the most important causative agent. Here we provide a general overview on various aspects of GLRaV-3, with an emphasis on the latest advances in the characterization of the genome. The full genome of several isolates have recently been sequenced and annotated, revealing the existence of several genetic variants. The classification of these variants, based on their genome sequence, will be discussed and a guideline is presented to facilitate future comparative studies. The characterization of sgRNAs produced during the infection cycle of GLRaV-3 has given some insight into the replication strategy and the putative functionality of the ORFs. The latest nucleotide sequence based molecular diagnostic techniques were shown to be more sensitive than conventional serological assays and although ELISA is not as sensitive it remains valuable for high-throughput screening and complementary to molecular diagnostics. The application of next-generation sequencing is proving to be a valuable tool to study the complexity of viral infection as well as plant pathogen interaction. Next-generation sequencing data can provide information regarding disease complexes, variants of viral species, and abundance of particular viruses. This information can be used to develop more accurate diagnostic assays. Reliable virus screening in support of robust grapevine certification programs remains the cornerstone of GLD management.

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“…Porém, como já mostrado, a utilização de material propagativo certificado, livre de vírus, ainda é a melhor opção para obter o máximo do potencial produtivo da cultivar e para reduzir perdas ocasionadas por vírus (Naidu et al, 2014). Mannini et al (2012) relataram sobre as vantagens advindas de vinhedos estabelecidos com material propagativo livre de vírus, em comparação às variáveis vigor, produtividade, taxa fotossintética e teor de sólidos solúveis. Giribaldi et al (2011) compararam o desempenho agronômico entre videiras sadias e infectadas com GLRaV-1, GVA e GRSPaV e verificaram diminuições significativas de brotação, fertilidade e produtividade das plantas infectadas, em comparação ao controle sadio.…”

Section: Resultsunclassified

Desempenho agronômico de videiras com e sem sintomas de viroses, e comparação molecular de isolados virais

Nascimento

Fajardo

Eiras

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar os efeitos de viroses em videiras sintomáticas e assintomáticas sobre as variáveis agronômicas relacionadas ao vigor das plantas e à qualidade enológica da uva, e comparar os isolados virais obtidos nessas duas condições. Realizaram-se dois experimentos com quatro cultivares. Todas as plantas foram indexadas, por meio da reação em cadeia da polimerase via transcrição reversa (RT-PCR) em tempo real, quanto à provável ocorrência dos seguintes vírus: Grapevine virus A (GVA), Grapevine virus B (GVB), Grapevine virus D (GVD), Grapevine leafroll-associated virus (GLRaV-1 ao -4, GLRaV-4 estirpe 5), Grapevine rupestris stem pitting-associated virus (GRSPaV) e Grapevine fleck virus (GFkV). As variáveis avaliadas foram: número de gemas brotadas e não brotadas, número de ramos com ou sem cachos, número total de gemas, número de cachos, massa de cachos frescos, massa total de bagas, massa do engaço, número de bagas por cacho, massa média de baga, sólidos solúveis totais, acidez total titulável, pH, massa de ramos podados ou diâmetros do tronco do porta-enxerto e da copa. Os efeitos negativos foram mais pronunciados nas plantas com sintomas de viroses; no entanto, constatou-se frequentemente que plantas sem sintomas também estavam infectadas. A análise molecular de GRSPaV, GVA e GLRaV-2, isolados de plantas sintomáticas e assintomáticas, resultou em alta percentagem de identidade de nucleotídeos entre isolados homólogos.Termos para indexação: Grapevine, Vitis, complexo do lenho rugoso, enrolamento-da-folha, PCR em tempo real. Agronomic performance of grapevines with and without virus symptoms, and molecular comparison of viral isolatesAbstract -The objective of this work was to evaluate the effect of viroses in symptomatic and asymptomatic grapevines on the agronomic variables related to the plant vigor and the enological quality of grapes, and to compare viral isolates obtained from these two conditions. Two experiments were performed with four cultivars. All plants were indexed by real time, reverse transcription-polymerase chain reaction (RT-PCR) for the probable occurrence of the following viruses: Grapevine virus A (GVA), Grapevine virus B (GVB), Grapevine virus D (GVD), Grapevine leafroll-associated virus (GLRaV-1 to -4, GLRaV-4 strain 5), Grapevine rupestris stem pitting-associated virus (GRSPaV), and Grapevine fleck virus (GFkV). The evaluated variables were: number of buds burst and not burst, number of branches with or without bunches, total number of buds, number of bunches, fresh bunch weight, total berry weight, rachis weight, number of berries per bunch, average berry weight, total soluble solids, total titratable acidity, pH, pruned branch weight, or rootstock and scion trunk diameters. The negative effects were more pronounced on the plants with virus symptoms; however, it was observed that plants without symptoms were also often infected. The molecular analysis of GRSPaV, GVA, and GLRaV-2, isolates from symptomatic and asymptomatic plants, resulted in a high perc...

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Field Performance and Wine Quality Modification in a Clone ofVitis viniferacv. Dolcetto after GLRaV-3 Elimination

Cited by 40 publications

References 6 publications

Grapevine Leafroll: A Complex Viral Disease Affecting a High-Value Fruit Crop

Grapevine Leafroll: A Complex Viral Disease Affecting a High-Value Fruit Crop

Grapevine leafroll-associated virus 3

Desempenho agronômico de videiras com e sem sintomas de viroses, e comparação molecular de isolados virais

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