Abstract

We have sequenced and annotated the genome of the filamentous ascomycete Ashbya gossypii . With a size of only 9.2 megabases, encoding 4718 protein-coding genes, it is the smallest genome of a free-living eukaryote yet characterized. More than 90% of A. gossypii genes show both homology and a particular pattern of synteny with Saccharomyces cerevisiae . Analysis of this pattern revealed 300 inversions and translocations that have occurred since divergence of these two species. It also provided compelling evidence that the evolution of S. cerevisiae included a whole genome duplication orfusion of two related species and showed, through inferred ancient gene orders, which of the duplicated genes lost one copy and which retained both copies.

Keywords

Saccharomyces cerevisiaeGenomeBiologyGeneticsComputational biologyEvolutionary biologyGene

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Publication Info

Year
2004
Type
article
Volume
304
Issue
5668
Pages
304-307
Citations
631
Access
Closed

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Fred S. Dietrich, Sylvia Voegeli, Sophie Brachat et al. (2004). The <i>Ashbya gossypii</i> Genome as a Tool for Mapping the Ancient <i>Saccharomyces cerevisiae</i> Genome. Science , 304 (5668) , 304-307. https://doi.org/10.1126/science.1095781

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DOI
10.1126/science.1095781