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Human-associated migration of Holarctic Saccharomyces uvarum strains to Patagonia

AuthorsGonzalez Flores, Melisa; Rodríguez, M. Eugenia; Peris, David; Querol, Amparo ; Barrio, Eladio ; Lopes, Christian A.
KeywordsSaccharomyces uvarum
Natural habitat
Issue Date29-Sep-2020
CitationFungal Ecology 48: 100990 (2020)
AbstractOur results show that the greatest S. uvarum population diversity worldwide is observed in Patagonia, where strains of this species can be isolated from industrial and traditional fermentations as well as from natural environments. This greater Patagonian diversity is due to the presence of strains belonging to two genetically differentiated populations, South America B (SA-B), and Holarctic/South America A (H/SA-A). The H/SA-A population of Patagonia is directly related to apple fermentation environments, mainly from cider fermentations but also, to a lesser extent, from traditional apple chicha. Our data suggest that strains from the Holarctic population colonized Patagonia. This is possibly associated with the introduction of apple trees by European immigrants, since the Spanish colonization of Chile in the 16th century and the introduction of new apple tree cultivars in the upper valley of the Negro River, Argentina, during the 19th century. During this process of colonization, Holarctic strains hybridized with SA-B yeasts, generating a series of admixed strains, mainly present in the traditional apple chicha fermentations.
Publisher version (URL)https://doi.org/10.1016/j.funeco.2020.100990
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