Table 1.

Strains used in this study

Strain numberaSpecies or strainMating typeGenotype or descriptionReference or sourcec
Y169 S. cerevisiae MAT a lys1 This laboratory
Y170 S. cerevisiae MATα lys1 This laboratory
Y184 S. cerevisiae MATα ade1 his1 This laboratory
Y185 S. cerevisiae MAT a ade1 his1 This laboratory
Y266 S. cerevisiae MATα lys1ρ Y170
Y267 S. cerevisiae MATα lys1ρ Y170
Y166 S. bayanus DiploidHomothallic, ura3-1 MCYC 623-6C (R. Borts)
Y244 S. bayanus MATα ura3G418R Y166 transformed with P161
Y245 S. bayanus MAT a ura3G418R Y166 transformed with P161
Y327 S. exiguus MATαSpontaneousho CBS 2141
Y328 S. exiguus MAT a Spontaneousho CBS 2141
Y339 S. exiguus MATα his Y327
Y345 S. exiguus MAT a arg Y328
Y188 S. castellii DiploidHomothallicCBS 4310
Y239 S. castellii MAT a Inducedho Y188
Y257 S. castellii MAT a met Y239
Y323CBS 6463b MAT a Spontaneousho , ρ CBS 6463
Y344CBS 6463 MAT a ura3 ρ Y323
Y280HybridHybridPrototrophY244 × Y169
Y500HybridHybridPrototrophY257 × Y245
Y507HybridHybridPrototroph, ρ Y184 × Y344
MT502 S. cerevisiae MAT a sst2-1 met1 leu2-3,112 his3 can1 M. T. Hansen
MT503 S. cerevisiae MATα sst2-1 met1 leu2-3,112 his3 can1 M. T. Hansen
MT504 S. cerevisiae MATα leu2-3,112 gal2 sst1 V. McKay
MT505 S. cerevisiae MAT a leu2-3,112 gal2 sst1 V. McKay
  • a Y, J. Piskur collection; MT, T. Nilsson-Tillgren collection.

  • b CBS 6463 (Y323) was previously classified asS. dairenensis, but it actually represents a novel species (17b).

  • c MCYC, Microbiology Collection of Yeast Cultures, Madrid, Spain; CBS, Centraalbureau voor Schimmelculture, Delft, Holland.