Saccharomyces eubayanus
Encyclopedia
Saccharomyces eubayanus, a type of yeast
Yeast
Yeasts are eukaryotic micro-organisms classified in the kingdom Fungi, with 1,500 species currently described estimated to be only 1% of all fungal species. Most reproduce asexually by mitosis, and many do so by an asymmetric division process called budding...

, is a likely parent of the lager
Lager
Lager is a type of beer made from malted barley that is brewed and stored at low temperatures. There are many types of lager; pale lager is the most widely-consumed and commercially available style of beer in the world; Pilsner, Bock, Dortmunder Export and Märzen are all styles of lager...

 brewing yeast, Saccharomyces pastorianus
Saccharomyces pastorianus
Saccharomyces pastorianus is a yeast, used industrially for the production of lager beer. It is a synonym of the yeast species Saccharomyces carlsbergensis, which was originally described in 1883 by Emil Christian Hansen, who was working for the Danish brewery Carlsberg.-Genomics:As S...

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Lager is a type of beer
Beer
Beer is the world's most widely consumed andprobably oldest alcoholic beverage; it is the third most popular drink overall, after water and tea. It is produced by the brewing and fermentation of sugars, mainly derived from malted cereal grains, most commonly malted barley and malted wheat...

 created from malted barley
Barley
Barley is a major cereal grain, a member of the grass family. It serves as a major animal fodder, as a base malt for beer and certain distilled beverages, and as a component of various health foods...

 and brewed at low temperatures, originally in Bavaria. S. eubayanus was discovered in Patagonia
Patagonia
Patagonia is a region located in Argentina and Chile, integrating the southernmost section of the Andes mountains to the southwest towards the Pacific ocean and from the east of the cordillera to the valleys it follows south through Colorado River towards Carmen de Patagones in the Atlantic Ocean...

, possibly being an example of Columbian exchange
Columbian Exchange
The Columbian Exchange was a dramatically widespread exchange of animals, plants, culture, human populations , communicable disease, and ideas between the Eastern and Western hemispheres . It was one of the most significant events concerning ecology, agriculture, and culture in all of human history...

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The discovery was published in a study by Diego Libkind, of the Institute for Biodiversity and Environment Research in Bariloche, Argentina
Argentina
Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

, and Chris Hittinger, professor of genetics at the University of Wisconsin, Madison, Wisconsin
Madison, Wisconsin
Madison is the capital of the U.S. state of Wisconsin and the county seat of Dane County. It is also home to the University of Wisconsin–Madison....

, USA, on August 22, 2011 in the journal Proceedings of the National Academy of Sciences of the United States of America.
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