American

American meaning in South American viticulture

In the context of South American viticulture, American refers to grape varieties derived from Vitis labrusca, a grapevine species native to North America. These varieties were introduced to South America, particularly Uruguay and Brazil, due to their superior resistance to humid climatic conditions compared to European Vitis vinifera varieties. The most prominent American variety is Isabella, known locally as Frutilla in Uruguay, Isabel in Brazil, and Borgoña in Peru. These grapes typically produce wines with distinctive “foxy” flavors characteristic of labrusca varieties, often described as having grape juice-like or candy-like notes. Beyond grape varieties, American rootstocks play a crucial role in South American viticulture as phylloxera-resistant grafting material. These rootstocks, developed from native North American vine species, provide the foundation for European grape varieties while protecting them from the devastating phylloxera pest that destroyed many vineyards worldwide in the late 19th century. The term highlights the important botanical and viticultural exchange between the Americas, where North American genetic material has enabled wine production in challenging South American climates and provided essential disease resistance for quality wine production.