@ARTICLE{TreeBASE2Ref21122,
author = {Kai Riess and Franz Oberwinkler and Robert Bauer and Sigisfredo Garnica},
title = {High genetic diversity at the regional scale and possible speciation in Sebacina epigaea and S. incrustans},
year = {2013},
keywords = {Cryptic species, Speciation, Diversity, Population structure, Multilocus genealogies, Basidiomycota, Sebacinales, Sympatry, Synonymous polymorphism, Ectomycorrhiza},
doi = {10.1186/1471-2148-13-102},
url = {http://www.biomedcentral.com/1471-2148/13/102/abstract},
pmid = {},
journal = {BMC Evolutionary Biology},
volume = {13},
number = {},
pages = {102},
abstract = {Background
Phylogenetic studies, particularly those based on rDNA sequences from plant roots and basidiomata, have revealed a strikingly high genetic diversity in the Sebacinales. However, the factors determining this genetic diversity at higher and lower taxonomic levels within this order are still unknown. In this study, we analysed patterns of genetic variation within two
morphological species, Sebacina epigaea and S. incrustans, based on 340 DNA haplotype sequences of independent genetic markers from the nuclear (ITS + 5.8S + D1/D2, RPB2) and mitochondrial (ATP6) genomes for 98 population samples. By characterising the genetic population structure within these species, we provide insights into species boundaries and the
possible factors responsible for genetic diversity at a regional geographic scale.
Results
We found that recombination events are relatively common between natural populations within Sebacina epigaea and S. incrustans, and play a significant role in generating intraspecific genetic diversity. Furthermore, we also found that RPB2 and ATP6 genes
display higher levels of intraspecific synonymous polymorphism. Phylogenetic and demographic analyses based on nuclear and mitochondrial loci revealed three distinct phylogenetic lineages within of each of the morphospecies S. epigaea and S. incrustans: one major and widely distributed lineage, and two geographically restricted lineages,
respectively. We found almost no differential morphological or ecological characteristics that
could be used to discriminate between these lineages.
Conclusions
Our results suggest that recombination and negative selection have played significant roles in generating genetic diversity within these morphological species at small geographical scales. Concordance between gene genealogies identified lineages/cryptic species that have evolved independently for a relatively long period of time. These putative species were not associated with geographic provenance, geographic barrier, host preference or distinct phenotypic
innovations.}
}
Citation for Study 13159
Citation title:
"High genetic diversity at the regional scale and possible speciation in Sebacina epigaea and S. incrustans".
Study name:
"High genetic diversity at the regional scale and possible speciation in Sebacina epigaea and S. incrustans".
This study is part of submission 13159
(Status: Published).
Citation
Riess K., Oberwinkler F., Bauer R., & Garnica S. 2013. High genetic diversity at the regional scale and possible speciation in Sebacina epigaea and S. incrustans. BMC Evolutionary Biology, 13: 102.
Authors
-
Riess K.
(submitter)
+49(0)634128031190
-
Oberwinkler F.
-
Bauer R.
-
Garnica S.
+49 7071 2972796
Abstract
Background
Phylogenetic studies, particularly those based on rDNA sequences from plant roots and basidiomata, have revealed a strikingly high genetic diversity in the Sebacinales. However, the factors determining this genetic diversity at higher and lower taxonomic levels within this order are still unknown. In this study, we analysed patterns of genetic variation within two
morphological species, Sebacina epigaea and S. incrustans, based on 340 DNA haplotype sequences of independent genetic markers from the nuclear (ITS + 5.8S + D1/D2, RPB2) and mitochondrial (ATP6) genomes for 98 population samples. By characterising the genetic population structure within these species, we provide insights into species boundaries and the
possible factors responsible for genetic diversity at a regional geographic scale.
Results
We found that recombination events are relatively common between natural populations within Sebacina epigaea and S. incrustans, and play a significant role in generating intraspecific genetic diversity. Furthermore, we also found that RPB2 and ATP6 genes
display higher levels of intraspecific synonymous polymorphism. Phylogenetic and demographic analyses based on nuclear and mitochondrial loci revealed three distinct phylogenetic lineages within of each of the morphospecies S. epigaea and S. incrustans: one major and widely distributed lineage, and two geographically restricted lineages,
respectively. We found almost no differential morphological or ecological characteristics that
could be used to discriminate between these lineages.
Conclusions
Our results suggest that recombination and negative selection have played significant roles in generating genetic diversity within these morphological species at small geographical scales. Concordance between gene genealogies identified lineages/cryptic species that have evolved independently for a relatively long period of time. These putative species were not associated with geographic provenance, geographic barrier, host preference or distinct phenotypic
innovations.
Keywords
Cryptic species, Speciation, Diversity, Population structure, Multilocus genealogies, Basidiomycota, Sebacinales, Sympatry, Synonymous polymorphism, Ectomycorrhiza
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S13159
- Other versions:
Nexus
NeXML
- Show BibTeX reference
@ARTICLE{TreeBASE2Ref21122,
author = {Kai Riess and Franz Oberwinkler and Robert Bauer and Sigisfredo Garnica},
title = {High genetic diversity at the regional scale and possible speciation in Sebacina epigaea and S. incrustans},
year = {2013},
keywords = {Cryptic species, Speciation, Diversity, Population structure, Multilocus genealogies, Basidiomycota, Sebacinales, Sympatry, Synonymous polymorphism, Ectomycorrhiza},
doi = {10.1186/1471-2148-13-102},
url = {http://www.biomedcentral.com/1471-2148/13/102/abstract},
pmid = {},
journal = {BMC Evolutionary Biology},
volume = {13},
number = {},
pages = {102},
abstract = {Background
Phylogenetic studies, particularly those based on rDNA sequences from plant roots and basidiomata, have revealed a strikingly high genetic diversity in the Sebacinales. However, the factors determining this genetic diversity at higher and lower taxonomic levels within this order are still unknown. In this study, we analysed patterns of genetic variation within two
morphological species, Sebacina epigaea and S. incrustans, based on 340 DNA haplotype sequences of independent genetic markers from the nuclear (ITS + 5.8S + D1/D2, RPB2) and mitochondrial (ATP6) genomes for 98 population samples. By characterising the genetic population structure within these species, we provide insights into species boundaries and the
possible factors responsible for genetic diversity at a regional geographic scale.
Results
We found that recombination events are relatively common between natural populations within Sebacina epigaea and S. incrustans, and play a significant role in generating intraspecific genetic diversity. Furthermore, we also found that RPB2 and ATP6 genes
display higher levels of intraspecific synonymous polymorphism. Phylogenetic and demographic analyses based on nuclear and mitochondrial loci revealed three distinct phylogenetic lineages within of each of the morphospecies S. epigaea and S. incrustans: one major and widely distributed lineage, and two geographically restricted lineages,
respectively. We found almost no differential morphological or ecological characteristics that
could be used to discriminate between these lineages.
Conclusions
Our results suggest that recombination and negative selection have played significant roles in generating genetic diversity within these morphological species at small geographical scales. Concordance between gene genealogies identified lineages/cryptic species that have evolved independently for a relatively long period of time. These putative species were not associated with geographic provenance, geographic barrier, host preference or distinct phenotypic
innovations.}
}
- Show RIS reference
TY - JOUR
ID - 21122
AU - Riess,Kai
AU - Oberwinkler,Franz
AU - Bauer,Robert
AU - Garnica,Sigisfredo
T1 - High genetic diversity at the regional scale and possible speciation in Sebacina epigaea and S. incrustans
PY - 2013
KW - Cryptic species
KW - Speciation
KW - Diversity
KW - Population structure
KW - Multilocus genealogies
KW - Basidiomycota
KW - Sebacinales
KW - Sympatry
KW - Synonymous polymorphism
KW - Ectomycorrhiza
UR - http://www.biomedcentral.com/1471-2148/13/102/abstract
N2 - Background
Phylogenetic studies, particularly those based on rDNA sequences from plant roots and basidiomata, have revealed a strikingly high genetic diversity in the Sebacinales. However, the factors determining this genetic diversity at higher and lower taxonomic levels within this order are still unknown. In this study, we analysed patterns of genetic variation within two
morphological species, Sebacina epigaea and S. incrustans, based on 340 DNA haplotype sequences of independent genetic markers from the nuclear (ITS + 5.8S + D1/D2, RPB2) and mitochondrial (ATP6) genomes for 98 population samples. By characterising the genetic population structure within these species, we provide insights into species boundaries and the
possible factors responsible for genetic diversity at a regional geographic scale.
Results
We found that recombination events are relatively common between natural populations within Sebacina epigaea and S. incrustans, and play a significant role in generating intraspecific genetic diversity. Furthermore, we also found that RPB2 and ATP6 genes
display higher levels of intraspecific synonymous polymorphism. Phylogenetic and demographic analyses based on nuclear and mitochondrial loci revealed three distinct phylogenetic lineages within of each of the morphospecies S. epigaea and S. incrustans: one major and widely distributed lineage, and two geographically restricted lineages,
respectively. We found almost no differential morphological or ecological characteristics that
could be used to discriminate between these lineages.
Conclusions
Our results suggest that recombination and negative selection have played significant roles in generating genetic diversity within these morphological species at small geographical scales. Concordance between gene genealogies identified lineages/cryptic species that have evolved independently for a relatively long period of time. These putative species were not associated with geographic provenance, geographic barrier, host preference or distinct phenotypic
innovations.
L3 - 10.1186/1471-2148-13-102
JF - BMC Evolutionary Biology
VL - 13
IS -
ER -