Vitis vinifera, the common grape vine, is a species of Vitis, native to the Mediterranean region, Central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern Iran. There are currently between 5,000 and 10,000 varieties of Vitis vinifera grapes though only a few are of commercial significance for wine and table grape production.
|Scientific classification |
It is a liana growing to 32 m (35 yd) in length, with flaky bark. The leaves are alternate, palmately lobed, 5–20 cm (2.0–7.9 in) long and broad. The fruit is a berry, known as a grape; in the wild species it is 6 mm (0.24 in) diameter and ripens dark purple to blackish with a pale wax bloom; in cultivated plants it is usually much larger, up to 3 cm (1.2 in) long, and can be green, red, or purple (black). The species typically occurs in humid forests and streamsides.
The wild grape is often classified as V. vinifera subsp. sylvestris (in some classifications considered Vitis sylvestris), with V. vinifera subsp. vinifera restricted to cultivated forms. Domesticated vines have hermaphrodite flowers, but subsp. sylvestris is dioecious (male and female flowers on separate plants) and pollination is required for fruit to develop.
The grape is eaten fresh, processed to make wine or juice, or dried to produce raisins. Cultivars of Vitis vinifera form the basis of the majority of wines produced around the world. All of the familiar wine varieties belong to Vitis vinifera, which is cultivated on every continent except for Antarctica, and in all the major wine regions of the world.
Wild grapes were harvested by neolithic foragers and early farmers. For thousands of years, the fruit has been harvested for both medicinal and nutritional value; its history is intimately entwined with the history of wine.
Changes in pip (seed) shape (narrower in domesticated forms) and distribution point to domestication occurring about 3500–3000 BC, in southwest Asia, South Caucasus (Armenia and Georgia), or the Western Black Sea shore region (Romania and Bulgaria).
The earliest evidence of domesticated grapes has been found at Gadachrili Gora, near the village of Imiri, Marneuli Municipality, in southeastern Republic of Georgia; carbon-dating points to the date of about 6000 BC.
Cultivation of the domesticated grape spread to other parts of the Old World in pre-historic or early historic times.
The first written accounts of grapes and wine can be found in the Epic of Gilgamesh, an ancient Sumerian text from the 3rd millennium BC. There are also numerous hieroglyphic references from ancient Egypt, according to which wine was reserved exclusively for priests, state functionaries and the pharaoh.
Hesiod in his Works and Days gives detailed descriptions of grape harvests and wine making techniques, and there are also many references in Homer. Greek colonists then introduced these practices in their colonies, especially in southern Italy (Magna Grecia), which was even known as Enotria due to its propitious climate.
The Etruscans improved wine making techniques and developed an export trade even beyond the Mediterranean basin.
The ancient Romans further developed the techniques learnt from the Etruscans, as shown by numerous works of literature containing information that is still valid today: De Agri Cultura (around 160 BC) by Cato the Elder, De re rustica by Marcus Terentius Varro, the Georgics by Virgil and De re rustica by Columella.
During the 3rd and 4th centuries AD, the long crisis of the Roman Empire generated instability in the countryside which led to a reduction of viticulture in general, which was mainly sustained only close to towns and cities and along coastlines.
Between the 5th and 10th centuries, viticulture was sustained almost exclusively by the different religious orders in monasteries. The Benedictines and others extended the grape growing limit northwards and also planted new vineyards at higher altitudes than was customary before. Apart from ‘ecclesiastical’ viticulture, there also developed, especially in France, a ‘noble’ viticulture, practiced by the aristocracy as a symbol of prestige.
Between the Low Middle Ages and the Renaissance, viticulture began to flourish again. Demographic pressure, population concentration in towns and cities, and the increased spending power of artisans and merchants gave rise to increased investment in viticulture, which became economically feasible once more.
Much was written during the Renaissance on grape growing and wine production, favouring a more scientific approach. This literature can be considered the origin of modern ampelography.
Grapes followed European colonies around the world, coming to North America around the 17th century, and to Africa, South America and Australia. In North America it formed hybrids with native species from the genus Vitis; some of these were intentional hybrids created to combat phylloxera, an insect pest which affected the European grapevine to a much greater extent than North American ones and in fact managed to devastate European wine production in a matter of years. Later, North American rootstocks became widely used to graft V. vinifera cultivars so as to withstand the presence of phylloxera.
In Europe, Vitis vinifera is concentrated in the central and southern regions; in Asia, in the western regions such as Anatolia, the Caucasus, the Middle east, and in China; in Africa, along the northern Mediterranean coast and in South Africa; in North America, in California and also other areas like Michigan, New Mexico, New York, Oregon, Washington state, British Columbia, Ontario and Québec; in South America in Chile, Argentina, Uruguay, Peru and Brazil; and in Oceania in Australia and New Zealand.
In the second half of the 20th century there was a shift in attitude in viticulture from traditional techniques to the scientific method based on fields such as microbiology, chemistry and ampelography. This change came about also due to changes in economic and cultural aspects and in the way of life and in the consumption habits of wide sectors of the population starting to demand quality products.
|NCBI genome ID||401|
|Genome size||about 500 Mb|
|Number of chromosomes||19 pairs|
|Year of completion||2008|
Nature magazine published the genome sequence of V. vinifera. This work was a collaboration between Italian researchers (Consorzio Interuniversitario Nazionale per la Biologia Molecolare delle Piante, Istituto di Genomica Applicata) and French researchers (Genoscope and Institut National de la Recherche Agronomique). Vitis vinifera is the fourth angiosperm species whose genome has been completely sequenced. The results of this analysis contribute significantly to understanding the evolution of plants over time and of the genes involved in the aromatic characteristics of wine.
In March 2007, scientists from Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO), working in the Cooperative Research Centre for Viticulture, reported that their "research suggests that extremely rare and independent mutations in two genes [VvMYBA1 and VvMYBA2 of red grapes] produced a single white grapevine that was the parent of almost all of the world's white grape varieties. If only one gene had been mutated, most grapes would still be red and we would not have the more than 3000 white grape cultivars available today."
Use of grapes is known to date back to Neolithic times, following the discovery in 1996 of 7,000-year-old wine storage jars in present-day northern Iran. Further evidence shows the Mesopotamians and Ancient Egyptians had vine plantations and winemaking skills. Greek philosophers praised the healing powers of grapes both whole and in the form of wine. Vitis vinifera cultivation and winemaking in China began during the Han Dynasty in the 2nd century with the importation of the species from Ta-Yuan. However, wild vine "mountain grapes" like Vitis thunbergii were being used for wine making before that time. In traditional medicine of India V. vinifera is used in prescriptions for cough, respiratory tract catarrh, subacute cases of enlarged liver and spleen, as well as in alcohol-based tonics (Aasavs).
Using the sap of grapevines, European folk healers sought to cure skin and eye diseases. Other historical uses include the leaves being used to stop bleeding, pain and inflammation of hemorrhoids. Unripe grapes were used for treating sore throats, and raisins were given as treatments for consumption (tuberculosis), constipation and thirst. Ripe grapes were used for the treatment of cancer, cholera, smallpox, nausea, skin and eye infections as well as kidney and liver diseases.
Seedless grape varieties were developed to appeal to consumers, but researchers are now discovering that many of the healthful properties of grapes may actually come from the seeds themselves, thanks to their enriched phytochemical content.
Grapevine leaves are filled with minced meat (such as lamb, pork or beef), rice and onions in the making of Balkan traditional dolma.
V. vinifera contains many phenolic compounds. Anthocyanins can be found in the skin of the berries, hydroxycinnamic acids in the pulp and condensed tannins of the proanthocyanidins type in the seeds. Stilbenoids can be found in the skin and in wood.
Trans-resveratrol is a phytoalexin produced against the growth of fungal pathogens such as Botrytis cinerea and delta-viniferin is another grapevine phytoalexin produced following fungal infection by Plasmopara viticola.
Vitis vinifera red cultivars are rich in anthocyanins that impart their colour to the berries (generally in the skin). The 5 most basic anthocyanins found in grape are:
Cultivars like Graciano may also contain :
- acetylated anthocyanins
- coumaroylated anthocyanins
- Malvidin-3-(6-p-coumaroyl)-glucoside cis
- Malvidin-3-(6-p-coumaroyl)-glucoside trans
- caffeoylated anthocyanins
Isoprenoid monoterpenes are present in grape, above all acyclic linalool, geraniol, nerol, citronellol, homotrienol and monocyclic α-terpineol, mostly occurring as glycosides. Carotenoids accumulate in ripening grape berries. Oxidation of carotenoids produces volatile fragments, C13-norisoprenoids. These are strongly odoriferous compounds, such as β-ionone (aroma of viola), damascenone (aroma of exotic fruits), β-damascone (aroma of rose) and β-ionol (aroma of flowers and fruits). Melatonin, an alkaloid, has been identified in grape. In addition, seeds are rich in unsaturated fatty acids, which helps lowering levels of total cholesterol and LDL cholesterol in the blood.
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|Wikimedia Commons has media related to Vitis vinifera.|
- Francesco Emanuelli; Silvia Lorenzi; Lukasz Grzeskowiak; Valentina Catalano; Marco Stefanini; Michela Troggio; Sean Myles; José M. Martinez-Zapater; Eva Zyprian; Flavia M. Moreira & M. Stella Grando (2013). "Genetic diversity and population structure assessed by SSR and SNP markers in a large germplasm collection of grape". BMC Plant Biology. 13: 39. doi:10.1186/1471-2229-13-39. PMC 3610244. PMID 23497049.
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