Lumbsch, Thorsten; Schmitt, Imke; Döring, Heidi; Wedin, Mats:
ITS sequence data suggest variability of ascus types and support ontogenetic characters as phylogenetic discriminators in the Agyriales (Ascomycota).
In: Mycological research : an international journal of fungal biology, Jg. 105 (2001), Heft 3, S. 265 - 274
2001Artikel/Aufsatz in Zeitschrift
Biologie
Titel:
ITS sequence data suggest variability of ascus types and support ontogenetic characters as phylogenetic discriminators in the Agyriales (Ascomycota).
Autor*in:
Lumbsch, Thorsten;Schmitt, Imke;Döring, Heidi;Wedin, Mats
Erscheinungsjahr:
2001

Abstract:

The phylogeny of the Agyriales was investigated using nucleotide sequences of ITS1, 5.8S, and ITS2 rDNA. Sequences of these regions from 15 new sequences of 13 agyrialean fungi were aligned to those of four representatives of Ostropales used as outgroup. Six different alignments were analysed cladistically using maximum parsimony. The Agyriales were supported as a monophyletic group in the strict consensus tree and the synonymy of the Rimulariaceae and Saccomorphaceae was confirmed. The Schaereriaceae is also shown to belong to the Agyriaceae. The distribution of selected characters in the Agyriales is investigated and it is shown that the ascus type is variable within the group, while the ascoma ontogeny is invariant within the Agyriaceae. Trapelia as usually circumscribed is polyphyletic. The T. geochroa group is not closely related to Trapelia s. str. and the new genus Ainoa is described to accommodate T. geochroa and T. mooreana.