Phylogenetic studies within the Pezizales. I. 18s rRNA sequence data and classification

TitlePhylogenetic studies within the Pezizales. I. 18s rRNA sequence data and classification
Publication TypeJournal Article
Year of Publication1999
AuthorsHarrington FA, Pfister DH, Potter D, Donoghue MJ
JournalMycologia
Volume91
Pagination41-50
ISSN00275514
KeywordsBiological Sciences, Botany & Plant Sciences
Abstract

The order Pezizales has been divided into two suborders. One suborder, the Sarcoscyphineae, was originally described to include members whose asci were characterized by an unusual apical structure, the suboperculum. Disagreements as to how this structure should be defined, and indeed, whether or not it exists at all, have rendered the status of the suborder controversial. The two families within this suborder are the Sarcoscyphaceae and the Sarcosomataceae. Recent ultrastructural work demonstrates that there is an apical thickening which is restricted to the Sarcoscyphaceae. In order to test the monophyly of the suborders of the Pezizales and examine the relationships within the Sarcoscyphineae, phylogenetic analyses were carried out using DNA sequence data from the 18S rRNA gene. The strict consensus tree based upon these data shows both the Sarcoscyphineae and the Pezizineae as paraphyletic. These data suggest that the subordinal taxa currently recognized within the Pezizales should

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