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Abstract Detail



Mycological Section

Stajich, Jason [1], Aime, M. Catherine [2], Berbee, Mary [3], Binder, Manfred [4], Crous, Pedro W. [4], Grigoriev, Igor [5], Hibbett, David [6], James, Timothy [7], Martin, Sara [8], Nagy, Laszlo [9], Spatafora, Joey [10], Consortium, 1000 Fungal Genomes [1].

Evolutionary genomics of early branches of the fungal tree.

The 1000 fungal genomes (1KFG; http://1000.fungalgenomes.org/home/) project and other efforts worldwide have generated a wealth of sequence data supporting studies of evolutionary genomics of Kingdom Fungi. Major changes in morphology and trophism have occurred throughout the evolutionary history of Fungi and some can be traced in the history and gene composition of extant lineages. This includes transitions from a flagellated zoospore life stage seen in chytrid fungi (Cryptomycota, Chytridiomycota and Blastocladiomycota) to the filamentous and yeast forms observed in the ‘Zygomycetes’ and the multicellular Dikarya lineages. Branching order of the zoosporic lineages has been difficult to resolve with different topologies supporting an early branching Blastocladiomycota and others supporting Chytridiomycota as sister to the Blastocladiomycota + “Zygomycetes” + Dikarya. Data from 300 fungal genomes were used to evaluate the phylogenetic relationships among the early branches and compare gene content in animals, zoosporic fungi and the Dikarya fungi. Individual gene trees and concatenated analyses from hundreds of orthologous genes were used to assess the phylogenetic conflict for the early branching nodes and provide more confidence in recovered topologies for these clades. Comparison of gene content among the species and their outgroup taxa identified sets of lineage-specific genes and confirmations of gene losses and gains that correspond to the transition from a zoosporic ancestor to filamentous, yeast and multicellular growth forms. This work provides a new genomic perspective on the evolution of Kingdom Fungi including transitions to land and correlation with evolutionary events associated with other major clades (e.g., animals, plants) of life on Earth.


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Related Links:
1000 Fungal Genomes Project
JGI Fungal Genomes
ZyGoLife Project


1 - University of California-Riverside, Plant Pathology & Microbiology, Riverside, CA, 92521, USA
2 - Purdue University, Botany & Plant Pathology, 915 W. State Street, Botany & Plant Pathology, West Lafayette, IN, 47907, USA
3 - University of British Columbia, Department of Botany, 6270 University Blvd, Vancouver, BC, V6T1Z4, CA
4 - CBS Fungal Biodiversity Centre, Royal Netherlands Academy of Arts and Sciences, Utrecht, Netherlands
5 - Joint Genome Institute, Fungal Genomics Program, Walnut Creek, CA, 94598, USA
6 - Clark University, Biology, Worcester, MA, 01610, USA
7 - University of Michigan, Ecology and Evolutionary Biology, Ann Arbor, MI, 48109, USA
8 - INRA, Nancy, France
9 - Biological Research Center, HAS, Synthetic and Systems Biology Unit, Institute of Biochemistry, Szeged, Hungary
10 - Oregon State University, Botany and Plant Pathology, Corvallis, OR, 97331, USA

Keywords:
chytrid
phylogenomics
genomics
Fungi
zygomycete
Evolution
Comparative Genomics
comparative.

Presentation Type: Oral Paper:Papers for Sections
Session: 56
Location: Salon 1/The Shaw Conference Centre
Date: Wednesday, July 29th, 2015
Time: 9:30 AM
Number: 56007
Abstract ID:745
Candidate for Awards:None


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