Modifications in Chemical, Physical and Mechanical Properties of Nebbiolo (Vitis vinifera L.) Grape Berries Induced by Mixed Virus Infection

Modifications in grape quality parameters induced by mixed infection with GFLV and GFkV, GLRaV-1 and GVA, and GLRaV-3 and GVA in three Nebbiolo clones were compared against healthy plants of the same clones in two experimental vineyards in Piemonte, northwest Italy. The aim of the study was to evaluate the effect of virus infection on the mechanical properties of the berry skin and the whole berry as assessed by texture analysis tests, and on the amount and quality of berry skin phenols. Differences were observed in grapevine vigour, yield and juice composition, depending on the viral status of the plants. The anthocyanin profile of the vines infected with GFV and GFkV and those infected with GLRaV-1 and GVA showed a lower percentage of the more stable tri-substituted malvidin-3-glucoside and a higher percentage of cyanidin and peonidin-3-glucosides. Texture analysis showed that the viruses may increase berry-skin thickness and reduce phenol extractability. These effects carry practical implications for wine quality.

[1]  E. Celotti,et al.  The Phenolic Quality of Red Grapes at Delivery: Objective Evaluation with Colour Measurements , 2017 .

[2]  M. Manley,et al.  Maceration Before and During Fermentation: Effect on Pinotage Wine Phenolic Composition, Total Antioxidant Capacity and Objective Colour Parameters , 2017 .

[3]  H. Düring,et al.  Grape berry splitting and some mechanical properties of the skin , 2015 .

[4]  D. Gonsalves,et al.  Nomenclature of grapevine leafroll-associated putative closteroviruses. , 2015 .

[5]  Luca Rolle,et al.  Influence of Wine-Grape Skin Hardness on the Kinetics of Anthocyanin Extraction , 2012 .

[6]  L. Rolle,et al.  Instrumental Texture Analysis Parameters as Winegrapes Varietal Markers and Ripeness Predictors , 2011 .

[7]  Simone Giacosa,et al.  Berry skin thickness as main texture parameter to predict anthocyanin extractability in winegrapes , 2011 .

[8]  B. Zanoni,et al.  A kinetic study on extraction and transformation phenomena of phenolic compounds during red wine fermentation , 2010 .

[9]  E. Mehinagic,et al.  Evolution of grape berries during ripening: investigations into the links between their mechanical properties and the extractability of their skin anthocyanins. , 2010 .

[10]  L. Rolle,et al.  Mechanical properties, phenolic composition and extractability indices of Barbera grapes of different soluble solids contents from several growing areas. , 2010, Analytica chimica acta.

[11]  G. Zeppa,et al.  Relationship between Skin Break Force and Anthocyanin Extractability at Different Ripening Stages , 2009, American Journal of Enology and Viticulture.

[12]  Luca Rolle,et al.  Phenolic ripeness assessment of grape skin by texture analysis , 2008 .

[13]  G. Zeppa,et al.  Anthocyanin extractability assessment of grape skins by texture analysis , 2008 .

[14]  L. Rolle,et al.  Mechanical Behavior of Winegrapes under Compression Tests , 2008, American Journal of Enology and Viticulture.

[15]  D. Bertrand,et al.  Sensory and instrumental characterisation of Cabernet Franc grapes according to ripening stages and growing location , 2008 .

[16]  L. Rolle,et al.  Relations between grape phenolic maturity and red wine phenolic composition. , 2008 .

[17]  L. Rolle,et al.  Color and anthocyanin evaluation of red winegrapes by CIE L*, a*, b* parameters , 2007 .

[18]  J. López-Roca,et al.  A first approach towards the relationship between grape skin cell-wall composition and anthocyanin extractability , 2006 .

[19]  F. Pomar,et al.  Varietal differences among the anthocyanin profiles of 50 red table grape cultivars studied by high performance liquid chromatography. , 2005, Journal of chromatography. A.

[20]  Linda F. Bisson,et al.  A Review of the Effect of Winemaking Techniques on Phenolic Extraction in Red Wines , 2005, American Journal of Enology and Viticulture.

[21]  Francisco J Heredia,et al.  Effect of the maceration technique on the relationships between anthocyanin composition and objective color of Syrah wines. , 2004, Journal of agricultural and food chemistry.

[22]  Véronique Cheynier,et al.  Taste and mouth-feel properties of different types of tannin-like polyphenolic compounds and anthocyanins in wine , 2004 .

[23]  Franka Mlikota Gabler,et al.  Correlations of Morphological, Anatomical, and Chemical Features of Grape Berries with Resistance to Botrytis cinerea. , 2003, Phytopathology.

[24]  M. Borgo,et al.  Effetti del virus Glrav-3 dell'accartocciamento fogliare sulle produzioni di tre vitigni , 2003 .

[25]  L. Kovács,et al.  Latent Infection by Leafroll Agent GLRaV-3 Is Linked to Lower Fruit Quality in French-American Hybrid Grapevines Vidal blanc and St. Vincent , 2001, American Journal of Enology and Viticulture.

[26]  F. Mannini,et al.  Effect of virus status on leaf and berry phenolic compounds in two wine grapevine Vitis vinifera cultivars. , 2000 .

[27]  F. Mannini,et al.  Contribution of virus infections to clonal variability of some Vitis vinifera L. cultivars , 1999 .

[28]  C. N. Asmundo,et al.  IL CONTENUTO IN RESVERAFROLO DI ALCUNI VINI ROSSI DI SICILIA , 1999 .

[29]  C. Cabaleiro,et al.  Effects of Grapevine Leafroll-Associated Virus 3 on the Physiology and Must of Vitis vinifera L. cv. Albariño Following Contamination in the Field , 1999, American Journal of Enology and Viticulture.

[30]  F. Mannini,et al.  HEAT-TREATED V. VIRUS-INFECTED GRAPEVINE CLONES: AGRONOMICAL AND ENOLOGICAL MODIFICATIONS , 1998 .

[31]  Nicolas Vivas,et al.  Maturite phenolique: definition et controle , 1998 .

[32]  F. Mannini,et al.  The Effect of Grapevine Leafroll and Rugose Wood Sanitation on Agronomic Performance and Berry and Leaf Phenolic Content of a Nebbiolo Clone (Vitis vinifera L.) , 2018, American Journal of Enology and Viticulture.

[33]  A. Babini,et al.  Effects of Virus and Virus-Like Infections on Growth, Yield, and Fruit Quality of Albana and Trebbiano Romagnolo Grapevines , 1997 .

[34]  A. Schneider,et al.  A Rapid HPLC Method for Separation and Determination of Major Organic Acids in Grape Musts and Wines , 1987, American Journal of Enology and Viticulture.

[35]  R. Miller,et al.  Development of Methods for Screening Grapevines for Resistance to Infection by Downy Mildew. II. Resveratrol Production , 1987, American Journal of Enology and Viticulture.