@ARTICLE{TreeBASE2Ref18570,
author = {M. G. Otalora and G. Aragon and M. C. Molina and I. Martinez and Francois M. Lutzoni},
title = {Disentangling the Collema-Leptogium complex through a molecular phylogenetic study of the Collemataceae (Peltigerales, lichen-forming Ascomycota)},
year = {2010},
keywords = {},
doi = {10.3852/09-114},
url = {},
pmid = {},
journal = {Mycologia},
volume = {102},
number = {2},
pages = {279--290},
abstract = {The family Collemataceae (Peltigerales, Ascomycota) includes species of cyanolichens with foliose to fruticose or crustose thalli, with simple or septate ascospores. The current classification divides this family into two groups on the basis of ascospore types. The objective of this study was to evaluate the phylogenetic relationships within this family. Combined DNA sequence data from the nuclear large subunit and mitochondrial small subunit ribosomal RNA genes were used to evaluate monophyly of the family and the relationships between the largest genera of this family. The results revealed that this family is not monophyletic. The genera Staurolemma and Physma, currently classified within the Collemataceae, were found nested within the Pannariaceae. The second main result of this study confirms that the genera Collema and Leptogium, both part of the Collemataceae s. str., are not monophyletic and that the presence of a thallus cortex is not a synapomorphy for Leptogium. The main taxonomic conclusion is that the families Collemataceae and Pannariaceae were recircumscribed, in light of molecular findings, with the latter family now including Staurolemma and Physma. The genera Collema and Leptogium form a single mixed monophyletic group. Inferred ancestral character states within the Collema-Leptogium complex revealed that the ancestor of this family had a thallus without cortex and that a cortex evolved at least twice relatively early in the evolution of the Collemataceae s. str. These independent gains of a thallus cortex seems to be associated with a transition from colonizing bare rocks and soils in semi-arid and exposed habitats to epiphytism in shady humid forests.}
}
Citation for Study 10079
Citation title:
"Disentangling the Collema-Leptogium complex through a molecular phylogenetic study of the Collemataceae (Peltigerales, lichen-forming Ascomycota)".
This study was previously identified under the legacy study ID S2419
(Status: Published).
Citation
Otalora M., Aragon G., Molina M., Martinez I., & Lutzoni F. 2010. Disentangling the Collema-Leptogium complex through a molecular phylogenetic study of the Collemataceae (Peltigerales, lichen-forming Ascomycota). Mycologia, 102(2): 279-290.
Authors
-
Otalora M.
-
Aragon G.
-
Molina M.
-
Martinez I.
-
Lutzoni F.
Abstract
The family Collemataceae (Peltigerales, Ascomycota) includes species of cyanolichens with foliose to fruticose or crustose thalli, with simple or septate ascospores. The current classification divides this family into two groups on the basis of ascospore types. The objective of this study was to evaluate the phylogenetic relationships within this family. Combined DNA sequence data from the nuclear large subunit and mitochondrial small subunit ribosomal RNA genes were used to evaluate monophyly of the family and the relationships between the largest genera of this family. The results revealed that this family is not monophyletic. The genera Staurolemma and Physma, currently classified within the Collemataceae, were found nested within the Pannariaceae. The second main result of this study confirms that the genera Collema and Leptogium, both part of the Collemataceae s. str., are not monophyletic and that the presence of a thallus cortex is not a synapomorphy for Leptogium. The main taxonomic conclusion is that the families Collemataceae and Pannariaceae were recircumscribed, in light of molecular findings, with the latter family now including Staurolemma and Physma. The genera Collema and Leptogium form a single mixed monophyletic group. Inferred ancestral character states within the Collema-Leptogium complex revealed that the ancestor of this family had a thallus without cortex and that a cortex evolved at least twice relatively early in the evolution of the Collemataceae s. str. These independent gains of a thallus cortex seems to be associated with a transition from colonizing bare rocks and soils in semi-arid and exposed habitats to epiphytism in shady humid forests.
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S10079
- Other versions:
Nexus
NeXML
- Show BibTeX reference
@ARTICLE{TreeBASE2Ref18570,
author = {M. G. Otalora and G. Aragon and M. C. Molina and I. Martinez and Francois M. Lutzoni},
title = {Disentangling the Collema-Leptogium complex through a molecular phylogenetic study of the Collemataceae (Peltigerales, lichen-forming Ascomycota)},
year = {2010},
keywords = {},
doi = {10.3852/09-114},
url = {},
pmid = {},
journal = {Mycologia},
volume = {102},
number = {2},
pages = {279--290},
abstract = {The family Collemataceae (Peltigerales, Ascomycota) includes species of cyanolichens with foliose to fruticose or crustose thalli, with simple or septate ascospores. The current classification divides this family into two groups on the basis of ascospore types. The objective of this study was to evaluate the phylogenetic relationships within this family. Combined DNA sequence data from the nuclear large subunit and mitochondrial small subunit ribosomal RNA genes were used to evaluate monophyly of the family and the relationships between the largest genera of this family. The results revealed that this family is not monophyletic. The genera Staurolemma and Physma, currently classified within the Collemataceae, were found nested within the Pannariaceae. The second main result of this study confirms that the genera Collema and Leptogium, both part of the Collemataceae s. str., are not monophyletic and that the presence of a thallus cortex is not a synapomorphy for Leptogium. The main taxonomic conclusion is that the families Collemataceae and Pannariaceae were recircumscribed, in light of molecular findings, with the latter family now including Staurolemma and Physma. The genera Collema and Leptogium form a single mixed monophyletic group. Inferred ancestral character states within the Collema-Leptogium complex revealed that the ancestor of this family had a thallus without cortex and that a cortex evolved at least twice relatively early in the evolution of the Collemataceae s. str. These independent gains of a thallus cortex seems to be associated with a transition from colonizing bare rocks and soils in semi-arid and exposed habitats to epiphytism in shady humid forests.}
}
- Show RIS reference
TY - JOUR
ID - 18570
AU - Otalora,M. G.
AU - Aragon,G.
AU - Molina,M. C.
AU - Martinez,I.
AU - Lutzoni,Francois M.
T1 - Disentangling the Collema-Leptogium complex through a molecular phylogenetic study of the Collemataceae (Peltigerales, lichen-forming Ascomycota)
PY - 2010
KW -
UR - http://dx.doi.org/10.3852/09-114
N2 - The family Collemataceae (Peltigerales, Ascomycota) includes species of cyanolichens with foliose to fruticose or crustose thalli, with simple or septate ascospores. The current classification divides this family into two groups on the basis of ascospore types. The objective of this study was to evaluate the phylogenetic relationships within this family. Combined DNA sequence data from the nuclear large subunit and mitochondrial small subunit ribosomal RNA genes were used to evaluate monophyly of the family and the relationships between the largest genera of this family. The results revealed that this family is not monophyletic. The genera Staurolemma and Physma, currently classified within the Collemataceae, were found nested within the Pannariaceae. The second main result of this study confirms that the genera Collema and Leptogium, both part of the Collemataceae s. str., are not monophyletic and that the presence of a thallus cortex is not a synapomorphy for Leptogium. The main taxonomic conclusion is that the families Collemataceae and Pannariaceae were recircumscribed, in light of molecular findings, with the latter family now including Staurolemma and Physma. The genera Collema and Leptogium form a single mixed monophyletic group. Inferred ancestral character states within the Collema-Leptogium complex revealed that the ancestor of this family had a thallus without cortex and that a cortex evolved at least twice relatively early in the evolution of the Collemataceae s. str. These independent gains of a thallus cortex seems to be associated with a transition from colonizing bare rocks and soils in semi-arid and exposed habitats to epiphytism in shady humid forests.
L3 - 10.3852/09-114
JF - Mycologia
VL - 102
IS - 2
SP - 279
EP - 290
ER -