Mating in wild yeast: delayed interest in sex after spore germination

Sex: Deviant Mating in Yeast

Recent comparative genomics and mutational studies of the genes regulating mating and meiosis in fungi provide new insights into not only the variability of the key genes, but also the plasticity of the regulatory circuitry in the evolution of mating systems.

Spore germination determines yeast inbreeding according to fitness in the local environment.

Gene combinations conferring local fitness may be destroyed by mating with individuals that are adapted to a different environment. This form of outbreeding depression provides an evolutionary incentive for self-fertilization. We show that the yeast Saccharomyces paradoxus tends to self-fertilize when it is well adapted to its local environment but tends to outcross when it is poorly adapted. T...

Ecophysiology of Development: Spore Germination

Ecophysiology of Development: Spore Germination

Tissue Sap on Spore Germination