The Ashbya gossypii Genome as a Tool for Mapping the Ancient Saccharomyces cerevisiae Genome

Author:

Dietrich Fred S.1234,Voegeli Sylvia1234,Brachat Sophie1234,Lerch Anita1234,Gates Krista1234,Steiner Sabine1234,Mohr Christine1234,Pöhlmann Rainer1234,Luedi Philippe1234,Choi Sangdun1234,Wing Rod A.1234,Flavier Albert1234,Gaffney Thomas D.1234,Philippsen Peter1234

Affiliation:

1. Biozentrum der Universität Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland.

2. Department of Molecular Genetics and Microbiology, Duke University Medical Center, Research Drive, Durham, NC 27710, USA.

3. Syngenta Biotechnology Inc., 3054 Cornwallis Road, Research Triangle Park, NC 27709, USA.

4. Departments of Agronomy and Biological Sciences, Clemson University, Clemson, SC 29634, USA.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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