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A comparison between ITS phylogenetic relationships and morphological species recognition within Mycena sect. Calodontes in Northern Europe

Harder, Christoffer Bugge LU ; Læssøe, Thomas ; Kjøller, Rasmus and Frøslev, Tobias G. (2010) In Mycological Progress 9(3). p.395-405
Abstract

The members of Mycena sect. Calodontes (Tricholomataceae s. l., Basidiomycota) are characterised by a collybioid aspect and more or less purplish to reddish colours and a distinct raphanoid odour. In Europe, nine species have been recognised though some of these based on somewhat dubious morphological differences. Historically, most were assigned to Mycena pura. However, since Mycena pura displays one of the most striking colour variabilities within European agarics, many attempts have been made to subdivide it into independent entities, and several forms, varieties and species have been split from Mycena pura s. l. based largely on differences in colouration, gross macromorphology or other phenetic traits. We developed a large sample... (More)

The members of Mycena sect. Calodontes (Tricholomataceae s. l., Basidiomycota) are characterised by a collybioid aspect and more or less purplish to reddish colours and a distinct raphanoid odour. In Europe, nine species have been recognised though some of these based on somewhat dubious morphological differences. Historically, most were assigned to Mycena pura. However, since Mycena pura displays one of the most striking colour variabilities within European agarics, many attempts have been made to subdivide it into independent entities, and several forms, varieties and species have been split from Mycena pura s. l. based largely on differences in colouration, gross macromorphology or other phenetic traits. We developed a large sample of ITS sequences of all species of sect. Calodontes known from Europe for which vouchers exist. Furthermore, partial LSU data were developed and additional sequences downloaded from GENBANK to assess the relationship of Calodontes with other Mycena spp. We show that most Calodontes form a monophyletic group including a few North and South American collections, but that this cannot be conclusively shown when an additional North American sequence is added. For all other species than M. pura and M. diosma, we found morphological species recognition to be in agreement with the ITS data. Several significantly different clades can be recognised within the M. pura morphospecies, none of which can be linked to the observed (and described by proxy) colour varieties/forms. Indications of a possible environmental basis of the colour differentiation in the M. pura morphospecies are discussed.

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author
; ; and
publishing date
type
Contribution to journal
publication status
published
keywords
Basidiomycete phylogenetics, Cryptic speciation, Morphological species recognition
in
Mycological Progress
volume
9
issue
3
pages
395 - 405
publisher
IHW-Verlag
external identifiers
  • scopus:77955176440
ISSN
1617-416X
DOI
10.1007/s11557-009-0648-7
language
English
LU publication?
no
id
03358567-97d8-4d28-ac9c-afd77d794a0f
date added to LUP
2020-09-09 11:23:08
date last changed
2020-09-10 01:59:24
@article{03358567-97d8-4d28-ac9c-afd77d794a0f,
  abstract     = {<p>The members of Mycena sect. Calodontes (Tricholomataceae s. l., Basidiomycota) are characterised by a collybioid aspect and more or less purplish to reddish colours and a distinct raphanoid odour. In Europe, nine species have been recognised though some of these based on somewhat dubious morphological differences. Historically, most were assigned to Mycena pura. However, since Mycena pura displays one of the most striking colour variabilities within European agarics, many attempts have been made to subdivide it into independent entities, and several forms, varieties and species have been split from Mycena pura s. l. based largely on differences in colouration, gross macromorphology or other phenetic traits. We developed a large sample of ITS sequences of all species of sect. Calodontes known from Europe for which vouchers exist. Furthermore, partial LSU data were developed and additional sequences downloaded from GENBANK to assess the relationship of Calodontes with other Mycena spp. We show that most Calodontes form a monophyletic group including a few North and South American collections, but that this cannot be conclusively shown when an additional North American sequence is added. For all other species than M. pura and M. diosma, we found morphological species recognition to be in agreement with the ITS data. Several significantly different clades can be recognised within the M. pura morphospecies, none of which can be linked to the observed (and described by proxy) colour varieties/forms. Indications of a possible environmental basis of the colour differentiation in the M. pura morphospecies are discussed.</p>},
  author       = {Harder, Christoffer Bugge and Læssøe, Thomas and Kjøller, Rasmus and Frøslev, Tobias G.},
  issn         = {1617-416X},
  language     = {eng},
  month        = {01},
  number       = {3},
  pages        = {395--405},
  publisher    = {IHW-Verlag},
  series       = {Mycological Progress},
  title        = {A comparison between ITS phylogenetic relationships and morphological species recognition within Mycena sect. Calodontes in Northern Europe},
  url          = {http://dx.doi.org/10.1007/s11557-009-0648-7},
  doi          = {10.1007/s11557-009-0648-7},
  volume       = {9},
  year         = {2010},
}