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Bryological and Lichenological Section/ABLS

Lumbsch, H Thorsten [1].

Phylogenetic relationships of the lichen-forming order Agyriales.

The Agyriales is a small order of crustose lichen-forming fungi that is characterized by hemiangiocarpous ascoma development and an ascus with an amyloid ascus wall and non-amyloid tholus. The circumscription of Agyriales is unclear. Families, such as Anamylopsoraceae, which were included based on morphological evidence, appear to be distantly related in molecular trees. Also the phylogenetic position of the order is poorly understood. While some molecular studies place the Agyriales close to Ostropales (it was even suggested to merge these orders), the order is a sister-group to Pertusariales in other studies. The phylogenetic position and circumscription was re-investigated using sequence data of the nuclear LSU and mitochondrial SSU rDNA, and the protein-coding RPB-1 gene.


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1 - Field Museum of Natural Hististory, Department of Botany, 1400 South Lake Shore Drive, Roosevelt Rd At Lake Shore, Chicago, Illinois, 60605-2496, USA

Keywords:
lichens, phylogeny, Agyriales, ascomycetes.

Presentation Type: Oral Paper
Session: 51-1
Location: 400/Hilton
Date: Wednesday, August 17th, 2005
Time: 1:30 PM
Abstract ID:39


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