Mycologia
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
DOI: 10.3852/mycologia.97.2.362
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Schmitt, I.
Right arrow Articles by Lumbsch, H. T.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Schmitt, I.
Right arrow Articles by Lumbsch, H. T.
Agricola
Right arrow Articles by Schmitt, I.
Right arrow Articles by Lumbsch, H. T.
Mycologia, 97(2), 2005, pp. 362-374.
© 2005 by The Mycological Society of America

Ascoma morphology is homoplaseous and phylogenetically misleading in some pyrenocarpous lichens


Imke Schmitt 1
Gregory Mueller
H. Thorsten Lumbsch

     Department of Botany, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605

The phylogenetic relationships of many lichen-forming perithecioid ascomycetes are unknown. We generated nuLSU and mtSSU rDNA sequences of members of seven families of pyrenocarpous lichens and used a Bayesian framework to infer a phylogenetic estimate. Members of the perithecioid Protothelenellaceae, Thelenellaceae and Thrombiaceae surprisingly cluster within the mainly discocarpous Lecanoromycetes, while Strigulaceae, Verrucariaceae and Pyrenulaceae are related to the ascolocular Chaetothyriomycetes. Micromorphological studies of the ascomata showed that the two main groups of pyrenocarpous lichen-forming fungi differ in their ascus types. The Strigulaceae, Verrucariaceae and Pyrenulaceae have apically and laterally thick-walled asci, whereas the Thelenellaceae, Protothelenellaceae and Thrombiaceae have only apically thickened asci. The latter two show ring-shaped amyloid apical structures. Based on morphological and molecular evidence we propose to reduce Thrombiaceae to synonymy with Protothelenellaceae.

Key words: ascus type, Bayesian analysis, Chromatochlamys, molecular phylogeny, mtSSU rDNA, nucleotide composition bias, nuLSU rDNA, Protothelenella, pyrenolichens, Thelenella, Thrombium, systematics

1 Corresponding author, E-mail: ischmitt{at}fieldmuseum.org




This article has been cited by other articles:


Home page
 MycologiaHome page
J. W. Spatafora, G.-H. Sung, D. Johnson, C. Hesse, B. O'Rourke, M. Serdani, R. Spotts, F. Lutzoni, V. Hofstetter, J. Miadlikowska, et al.
A five-gene phylogeny of Pezizomycotina
Mycologia, November 1, 2006; 98(6): 1018 - 1028.
[Abstract] [Full Text] [PDF]

Home page
 MycologiaHome page
J. Miadlikowska, F. Kauff, V. Hofstetter, E. Fraker, M. Grube, J. Hafellner, V. Reeb, B. P. Hodkinson, M. Kukwa, R. Lucking, et al.
New insights into classification and evolution of the Lecanoromycetes (Pezizomycotina, Ascomycota) from phylogenetic analyses of three ribosomal RNA- and two protein-coding genes
Mycologia, November 1, 2006; 98(6): 1088 - 1103.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2005 by The Mycological Society of America.