Mutation of a peptide pheromone gene, called M-factor, in the yeast Schizosaccharomyces pombe, and subsequent matching of the mutated strains with strains containing mutated pheromone receptor proteins resulted in the creation of yeast mating pairs that were reproductively isolated from the wild type population, suggesting that manipulation of the mating pheromone system in yeast may artificially create novel yeast species, according to a study.
↧