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Abstract Detail



Systematics

Zelski, Steven E [1], Miller, Andrew N [2], Shearer, Carol A. [1].

A molecular evaluation of the freshwater ascomycete family Annulatascaceae sensu lato.

Freshwater ascomycetes comprise an ecological group of fungi that have been studied intensively only in the past sixty years. Within the Sordariomycetes, the family Annulatascaceae accounts for nearly 10% of all described freshwater ascomycetes. Its position is incertae sedis at the subclass and ordinal levels. A limited number of molecular systematic studies of this group have been conducted. We present the results of work done to generate a modern, multi-gene phylogeny of the Annulatascaceae sensu lato. Sequences of the partial nuclear ribosomal 28S large subunit, 18S large subunit, and internal transcribed spacer genes, as well as the protein-coding gene MCM7, were generated for numerous taxa described in Annulatascaceae. Maximum likelihood and Bayesian analyses support previous findings that Annulatascaceae is comprised of a monophyletic sensu stricto clade but other taxa belong in numerous different clades. The sensu stricto clade includes some but not all species of the genera Annulatascus, Annulusmagnus, Aquaticola, Ascitendus, Pseudoproboscispora, Longicollum, and Submersisphaeria. Genera with species outside of the sensu stricto clade include Ayria, Aquaticola, Brunneosporella, Cataractispora, Fluminicola, Fusoidispora, Torrentispora, Rivulicola, and Vertexicola.


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1 - University of Illinois at Urbana-Champaign, Plant Biology, 265 Morrill Hall, 505 South Goodwin Avenue, Urbana, IL, 61801, USA
2 - Illinois Natural History Survey, 1806 S. Oak St., Champaign, IL, 61820, USA

Keywords:
Annulatascaceae
Phylogenetics
Freshwater ascomycetes.

Presentation Type: Offered Paper - Paper
Session: 2
Location: Auditorium/Kellogg Hotel and Conference Center
Date: Monday, June 9th, 2014
Time: 9:45 AM
Number: 2006
Abstract ID:181
Candidate for Awards:None


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