| Abstract Detail
Poster Session Haridas, Sajeet [1], Riley, Robert [1], Salamov, Asaf [1], Kurtzman, Cletus P. [2], Blackwell, Meredith [3], Grigoriev, Igor [1], Jeffries, Thomas W. [4]. Evolutionary history of Ascomyceteous Yeasts. Yeasts are important for many industrial and biotechnological processes and show remarkable diversity despite morphological similarities. We have sequenced the genomes of 20 Ascomyceteous yeasts of taxonomic and industrial importance including members of Saccharomycotina and Taphrinomycotina. A comparison of these with several other previously published yeast genomes has helped resolve the phylogenetic positions of previously poorly placed species including Saitoella complicata, Babjeviella inositovora, and Metschnikowia bicuspidata. Phylogenetic analysis showed that alternative yeast nuclear codon usage, where CUG encodes Serine instead of Leucine, is monophyletic within a clade of the Saccharomycotina. Most of the yeasts have compact genomes with a large fraction of single exon genes with Lipomyces starkeyi and the previously published Pneumocystis jirovecii being notable exceptions. Early diverging species appear to have more introns. We also observed a large number of unclassified lineage-specific non-simple repeats in these genomes.
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1 - Joint Genome Institute, 2800 Mitchell Drive, Walnut Creek, CA, 94598, USA
2 - USDA-ARS, 1815 N University St., Peoria , IL, 61604, USA
3 - Louisiana State University, Department of Biological Sciences, 382 Life Sciences Building, Baton Rouge, LA, 70803, USA
4 - University of Wisconsin-Madison , Department of Bacteriology, 1550 Linden Dr., Madison, WI, 53706, USA
Keywords:
Ascomyceteous Yeasts.
Presentation Type: Offered Paper - Poster
Session: P2
Location: Lincoln Room/Kellogg Hotel and Conference Center
Date: Tuesday, June 10th, 2014
Time: 8:00 PM
Number: P2006
Abstract ID:193
Candidate for Awards:None |
