Some tasty research if you are of the set who enjoy a good pint of beer. GenomeWebNews reports on study in Genome Research by Barbara Dunn and Gavin Sherlock at Stanford, looking at the history of lager yeast Saccharomyces pastorianus. [...]
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We may have to reevaluate whether Saccharomyces cerevisiae alone is the species used to brew beer. A paper from Gonzalez et al describes results from PCR-RFLP comparison of 24 brewing strains identifies evidence for S. cerevisiae x S. kudriavzevii hybrids. Although this hybridization is not unprecedented, most seem to be related to cultivated brewing or fermentation [...] Another asexual species of fungi also has evidence for the meiosis-specific process of Repeat Induced Point-mutations (RIP). [...] A recent paper describes the discovery of 9 new introns in Saccharomyces cerevisiae by Ron Davis’s group at Stanford, using high density tiling arrays from Affymetrix. The arrays are designed for both strands allow the detection of transcripts transcribed from both strands. The arrays were also put to work by the Davis and Steinmetz [...] |
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