TY - JOUR
T1 - Generic circumscriptions in Geoglossomycetes
AU - Hustad, V. P.
AU - Miller, A. N.
AU - Dentinger, B. T.M.
AU - Cannon, P. F.
PY - 2013/12
Y1 - 2013/12
N2 - The class Geoglossomycetes is a recently created class of Ascomycota, currently comprised of one family (Geoglossaceae) and five genera (Geoglossum, Nothomitra, Sarcoleotia, Thuemenidium and Trichoglos-sum). These fungi, commonly known as earth tongues, have long been a subject of mycological research. However, the taxonomy within the group has historically been hindered by the lack of reliable morphological characters, uncertain ecological associations, and the inability to grow these fungi in culture. The phylogenetic relationships of Geoglossomycetes were investigated by conducting maximum likelihood and Bayesian analyses using a 4-gene dataset (ITS, LSU, MCM7, RPB1). Five well-supported monophyletic clades were found that did not correspond exactly with the currently recognised genera, necessitating a taxonomic revision of the group. Two new genera are proposed: Glutinoglossum to accommodate G. glutinosum and the newly described species G. heptaseptatum, and Sabuloglossum to accommodate S. arenarium. The type species of Thuemenidium, traditionally included within the Geoglossaceae, is confirmed as belonging to a separate lineage that is only distantly related to Geoglossomycetes.
AB - The class Geoglossomycetes is a recently created class of Ascomycota, currently comprised of one family (Geoglossaceae) and five genera (Geoglossum, Nothomitra, Sarcoleotia, Thuemenidium and Trichoglos-sum). These fungi, commonly known as earth tongues, have long been a subject of mycological research. However, the taxonomy within the group has historically been hindered by the lack of reliable morphological characters, uncertain ecological associations, and the inability to grow these fungi in culture. The phylogenetic relationships of Geoglossomycetes were investigated by conducting maximum likelihood and Bayesian analyses using a 4-gene dataset (ITS, LSU, MCM7, RPB1). Five well-supported monophyletic clades were found that did not correspond exactly with the currently recognised genera, necessitating a taxonomic revision of the group. Two new genera are proposed: Glutinoglossum to accommodate G. glutinosum and the newly described species G. heptaseptatum, and Sabuloglossum to accommodate S. arenarium. The type species of Thuemenidium, traditionally included within the Geoglossaceae, is confirmed as belonging to a separate lineage that is only distantly related to Geoglossomycetes.
KW - Ascomycota
KW - Earth tongues
KW - Geoglossum
KW - Microglossum
KW - Phylogenetics
KW - Systematics
UR - http://www.scopus.com/inward/record.url?scp=84901362681&partnerID=8YFLogxK
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U2 - 10.3767/003158513X671235
DO - 10.3767/003158513X671235
M3 - Article
C2 - 24761038
AN - SCOPUS:84901362681
SN - 0031-5850
VL - 31
SP - 101
EP - 111
JO - Persoonia: Molecular Phylogeny and Evolution of Fungi
JF - Persoonia: Molecular Phylogeny and Evolution of Fungi
ER -