NDLI: Reconstruction of the genome origins and evolution of the hybrid lager yeast Saccharomyces pastorianus.

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Reconstruction of the genome origins and evolution of the hybrid lager yeast Saccharomyces pastorianus.

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Reconstruction of the genome origins and evolution of the hybrid lager yeast Saccharomyces pastorianus.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Dunn, Barbara Sherlock, Gavin
Description	Country affiliation: United States Author Affiliation: Dunn B ( Department of Genetics, Stanford University, Stanford, California 94305-5120, USA.)
Abstract	Inter-specific hybridization leading to abrupt speciation is a well-known, common mechanism in angiosperm evolution; only recently, however, have similar hybridization and speciation mechanisms been documented to occur frequently among the closely related group of sensu stricto Saccharomyces yeasts. The economically important lager beer yeast Saccharomyces pastorianus is such a hybrid, formed by the union of Saccharomyces cerevisiae and Saccharomyces bayanus-related yeasts; efforts to understand its complex genome, searching for both biological and brewing-related insights, have been underway since its hybrid nature was first discovered. It had been generally thought that a single hybridization event resulted in a unique S. pastorianus species, but it has been recently postulated that there have been two or more hybridization events. Here, we show that there may have been two independent origins of S. pastorianus strains, and that each independent group--defined by characteristic genome rearrangements, copy number variations, ploidy differences, and DNA sequence polymorphisms--is correlated with specific breweries and/or geographic locations. Finally, by reconstructing common ancestral genomes via array-CGH data analysis and by comparing representative DNA sequences of the S. pastorianus strains with those of many different S. cerevisiae isolates, we have determined that the most likely S. cerevisiae ancestral parent for each of the independent S. pastorianus groups was an ale yeast, with different, but closely related ale strains contributing to each group's parentage.
File Format	HTM / HTML
ISSN	10889051
e-ISSN	15495469
DOI	10.1101/gr.076075.108
Journal	Genome Research
Issue Number	10
Volume Number	18
Language	English
Publisher	Cold Spring Harbor Laboratory Press
Publisher Date	2008-10-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Genetics Discipline Genomics Evolution, Molecular Genome, Fungal Saccharomyces Genetics Gene Duplication Gene Rearrangement Genes, Fungal Hybridization, Genetic Molecular Sequence Data Nucleic Acid Hybridization Ploidies Classification Saccharomyces Cerevisiae Sequence Analysis, Dna Species Specificity Research Support, N.i.h., Extramural Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Genetics Genetics (clinical)

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Reconstruction of the genome origins and evolution of the hybrid lager yeast Saccharomyces pastorianus

Molecular characterization of a chromosomal rearrangement involved in the adaptive evolution of yeast strains.

Extent of genomic rearrangement after genome duplication in yeast.

Parallel evolution by gene duplication in the genomes of two unicellular fungi.

Independent sorting-out of thousands of duplicated gene pairs in two yeast species descended from a whole-genome duplication.

SCRaMbLE generates designed combinatorial stochastic diversity in synthetic chromosomes.

Prevalence of small inversions in yeast gene order evolution.

High-resolution DNA-binding specificity analysis of yeast transcription factors.

Genomic evidence for adaptation by gene duplication.

Reconstruction of the genome origins and evolution of the hybrid lager yeast Saccharomyces pastorianus.

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Reconstruction of the genome origins and evolution of the hybrid lager yeast Saccharomyces pastorianus

Molecular characterization of a chromosomal rearrangement involved in the adaptive evolution of yeast strains.

Extent of genomic rearrangement after genome duplication in yeast.

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Independent sorting-out of thousands of duplicated gene pairs in two yeast species descended from a whole-genome duplication.

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Reconstruction of the genome origins and evolution of the hybrid lager yeast Saccharomyces pastorianus.