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Multiple gene genealogies and species recognition in the ectomycorrhizal fungus Paxillus involutus.

Hedh, Jenny LU ; Samson, Peter LU ; Erland, Susanne LU and Tunlid, Anders LU (2008) In Mycological Research 112(8). p.965-975
Abstract
Paxillus involutus (basidiomycetes, Boletales) is a common ectomycorrhizal fungus in the Northern Hemisphere. The fungus displays significant variation in phenotypic characters related to morphology, physiology, and ecology. Previous studies have shown that P. involutus contains several intersterility groups and morphological species. In this study, we have used concordance of multiple gene genealogies to identify genetically isolated species of P. involutus. Fragments from five protein coding genes in 50 isolates of P. involutus collected from different hosts and environments in Europe and one location in Canada were analysed using phylogenetic methods. Concordance of the five gene genealogies showed that P. involutus comprises at least... (More)
Paxillus involutus (basidiomycetes, Boletales) is a common ectomycorrhizal fungus in the Northern Hemisphere. The fungus displays significant variation in phenotypic characters related to morphology, physiology, and ecology. Previous studies have shown that P. involutus contains several intersterility groups and morphological species. In this study, we have used concordance of multiple gene genealogies to identify genetically isolated species of P. involutus. Fragments from five protein coding genes in 50 isolates of P. involutus collected from different hosts and environments in Europe and one location in Canada were analysed using phylogenetic methods. Concordance of the five gene genealogies showed that P. involutus comprises at least four distinct phylogenetic lineages: phylogenetic species I (with nine isolates), II (33 isolates), III (three isolates), and IV (five isolates). The branches separating the four species were long and well supported compared with the species internodes. A low level of shared polymorphisms was observed among the four lineages indicating a long time since the genetic isolation began. Three of the phylospecies corresponded to earlier identified morphological species: I to P. obscurosporus, II to P. involutus s. str., and III to P. validus. The phylogenetic species had an overlapping geographical distribution. Species I and II differed partly in habitat and host preferences. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ITS sequences, Cryptic species, Boletales, Mycorrhizas, Phylogenetic species Species concepts
in
Mycological Research
volume
112
issue
8
pages
965 - 975
publisher
Cambridge University Press
external identifiers
  • wos:000258809700008
  • scopus:47149100085
ISSN
1469-8102
DOI
10.1016/j.mycres.2008.01.026
language
English
LU publication?
yes
id
d720fa3c-e9f3-4922-82ed-96b3ee77137f (old id 1168795)
date added to LUP
2009-03-06 12:56:11
date last changed
2017-11-19 03:27:18
@article{d720fa3c-e9f3-4922-82ed-96b3ee77137f,
  abstract     = {Paxillus involutus (basidiomycetes, Boletales) is a common ectomycorrhizal fungus in the Northern Hemisphere. The fungus displays significant variation in phenotypic characters related to morphology, physiology, and ecology. Previous studies have shown that P. involutus contains several intersterility groups and morphological species. In this study, we have used concordance of multiple gene genealogies to identify genetically isolated species of P. involutus. Fragments from five protein coding genes in 50 isolates of P. involutus collected from different hosts and environments in Europe and one location in Canada were analysed using phylogenetic methods. Concordance of the five gene genealogies showed that P. involutus comprises at least four distinct phylogenetic lineages: phylogenetic species I (with nine isolates), II (33 isolates), III (three isolates), and IV (five isolates). The branches separating the four species were long and well supported compared with the species internodes. A low level of shared polymorphisms was observed among the four lineages indicating a long time since the genetic isolation began. Three of the phylospecies corresponded to earlier identified morphological species: I to P. obscurosporus, II to P. involutus s. str., and III to P. validus. The phylogenetic species had an overlapping geographical distribution. Species I and II differed partly in habitat and host preferences.},
  author       = {Hedh, Jenny and Samson, Peter and Erland, Susanne and Tunlid, Anders},
  issn         = {1469-8102},
  keyword      = {ITS sequences,Cryptic species,Boletales,Mycorrhizas,Phylogenetic species Species concepts},
  language     = {eng},
  number       = {8},
  pages        = {965--975},
  publisher    = {Cambridge University Press},
  series       = {Mycological Research},
  title        = {Multiple gene genealogies and species recognition in the ectomycorrhizal fungus Paxillus involutus.},
  url          = {http://dx.doi.org/10.1016/j.mycres.2008.01.026},
  volume       = {112},
  year         = {2008},
}