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Molecular data support Pseudoparmelia as a distinct lineage related to Relicina and Relicinopsis (Ascomycota, Lecanorales)

Published online by Cambridge University Press:  29 January 2015

Kawinnat BUARUANG ,
Klara SCHARNAGL ,
Pradeep DIVAKAR ,
Steven D. LEAVITT ,
Ana CRESPO ,
Thomas H. NASH ,
Leka MANOCH ,
Robert LÜCKING  and
H. Thorsten LUMBSCH
Kawinnat BUARUANG
Affiliation:
Department of Plant Pathology, Faculty of Agriculture, Kasetsart University, Bangkhen, Bangkok, 10900Thailand
Klara SCHARNAGL
Affiliation:
Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
Pradeep DIVAKAR
Affiliation:
Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid 28040, Spain
Steven D. LEAVITT
Affiliation:
Science & Education, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, USA. Email: tlumbsch@fieldmuseum.org
Ana CRESPO
Affiliation:
Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid 28040, Spain
Thomas H. NASH
Affiliation:
Deptartment of Botany, University of Wisconsin, Madison, WI 53706-1313, USA
Leka MANOCH
Affiliation:
Department of Plant Pathology, Faculty of Agriculture, Kasetsart University, Bangkhen, Bangkok, 10900Thailand
Robert LÜCKING
Affiliation:
Science & Education, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, USA. Email: tlumbsch@fieldmuseum.org
H. Thorsten LUMBSCH*
Affiliation:
Science & Education, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, USA. Email: tlumbsch@fieldmuseum.org
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Abstract

The phylogenetic position of the genus Pseudoparmelia was addressed using molecular data from five loci (mtSSU, nuLSU, ITS, Mcm7, RPB1), generated from three species and aligned with sequences from 293 samples representing all major clades of Parmeliaceae. Pseudoparmelia species form a well-supported monophyletic group that is the sister group of a clade consisting of the genera Relicina and Relicinopsis. These three genera share a thallus with a pored epicortex, isolichenan as cell wall polysaccharide, and relatively small ascospores. Morphological and chemical characters that distinguish Pseudoparmelia from the closely related Relicina and Relicinopsis are discussed. To further elucidate the relationships of these three genera, we assembled a second dataset including 15 additional samples of Relicina and Relicinopsis using three loci (mtSSU, nuLSU, ITS). All three genera are monophyletic but monophyly of Relicina lacks support and, in the mtSSU single locus tree, the genus is paraphyletic with Relicinopsis nested within. Additional studies including more Relicina species are necessary to test delimitation of the genera Relicina and Relicinopsis.

Keywords

generic conceptlichensmolecular systematicsParmeliaceaeparmelioid lichenstaxonomy
Type
Articles
Information
The Lichenologist , Volume 47 , Issue 1 , January 2015 , pp. 43 - 49
Copyright
Copyright © British Lichen Society 2015 

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