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Saccharomyces yeasts are emerging as model organisms for ecology and evolution, and researchers need environmental Saccharomyces isolates to test ecological and evolutionary hypotheses. However, methods for isolating Saccharomyces from nature have not been standardized, and isolation methods may influence the genotypes and phenotypes of studied strains. We compared the effectiveness and potential...
Killer yeasts are ubiquitous in the environment: They have been found in diverse habitats ranging from ocean sediment to decaying cacti to insect bodies and on all continents including Antarctica. However, environmental killer yeasts are poorly studied compared with laboratory and domesticated killer yeasts. Killer yeasts secrete so‐called killer toxins that inhibit nearby sensitive yeasts, and the...
Errors in meiosis can be important postzygotic barriers between different species. In Saccharomyces hybrids, chromosomal missegregation during meiosis I produces gametes with missing or extra chromosomes. Gametes with missing chromosomes are inviable, but we do not understand how extra chromosomes (disomies) influence hybrid gamete inviability. We designed a model predicting rates of missegregation...
Yeast researchers need model systems for ecology and evolution, but the model yeast Saccharomyces cerevisiae is not ideal because its evolution has been affected by domestication. Instead, ecologists and evolutionary biologists are focusing on close relatives of S. cerevisiae, the seven species in the genus Saccharomyces. The best‐studied Saccharomyces yeast, after S. cerevisiae, is S. paradoxus,...
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