Collection of S. cerevisiae strains from diverse environments and geographical locations.

aProfesseur Jean-Marie François, Laboratoire Ingenierie des Systèmes Biologiques et des Procédés, Institut National des Sciences Appliquées, Toulouse.According to data on the habitats of yeasts, mainly from Sanger Institute and Washington University databases, strains were first classified into 7 major groups: Baker, Clinical, Fermentation processes, Laboratory, Vineyard, Natural and Wine commercial. The Fermentation processes and Natural clades were further differentiated into three and five subgroups, respectively.