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The core meiotic transcriptome in budding yeasts

Michael Primig*, Roy M. Williams*, Elizabeth A. Winzeler, Gela G. Tevzadze, Andrew A. Conway, Seung Y. Hwang, Ronald W. Davis and Rochelle E. Esposito

*These authors contributed equally to this study

Nat Genet. (2000), vol 4, p. 415-23

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We used high-density oligonucleotide microarrays to analyse the genomes and meiotic expression patterns of two yeast strains, SK1 and W303, that display distinct kinetics and efficiencies of sporulation.  Hybridization of genomic DNA to arrays revealed numerous gene deletions and polymorphisms in both backgrounds.  The expression analysis yielded ~1600 meiotically regulated genes in each strain, with a core set of ~60% displaying similar patterns in both strains.  Most of these (95%), are MATa/MATalpha-dependent and are not similarly expressed in near isogenic meiosis-deficient controls.  The transcript profiles correlate with the distribution of defined meiotic promoter elements and with time of known gene function.