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Amyloidity is not diagnostic for species in the Mycena pearsoniana complex (Mycena sectio Calodontes)

Harder, Christoffer Bugge LU ; Lodge, D. Jean ; Petersen, Ronald H. ; Hughes, Karen W. ; Blanco, Joaquin Cifuentes ; Frøslev, Tobias Guldberg and Læssøe, Thomas (2012) In Mycological Progress 11(3). p.725-732
Abstract

In Mycena sectio Calodontes with otherwise amyloid spores, the inamyloid spores of Mycena pearsoniana Dennis ex Singer were a distinguishing feature for this species and its subsection Violacella. Although the original concept of this species was European, Singer chose to typify it with material collected in Mexico. The name has since been applied to all European collections with inamyloid spores and decurrent lamellae. Our phylogenetic analysis of 91 ITS sequences from European, North and South American Calodontes collections shows that European collections identified as M. pearsoniana fall into two well-supported sibling clades together with both inamyloid and weakly amyloid North American collections. Since the holotype of M.... (More)

In Mycena sectio Calodontes with otherwise amyloid spores, the inamyloid spores of Mycena pearsoniana Dennis ex Singer were a distinguishing feature for this species and its subsection Violacella. Although the original concept of this species was European, Singer chose to typify it with material collected in Mexico. The name has since been applied to all European collections with inamyloid spores and decurrent lamellae. Our phylogenetic analysis of 91 ITS sequences from European, North and South American Calodontes collections shows that European collections identified as M. pearsoniana fall into two well-supported sibling clades together with both inamyloid and weakly amyloid North American collections. Since the holotype of M. pearsoniana is in an advanced state of decay, we have selected an epitype from a North American locality with a climate comparable to the Mexican type locality. Our results show weakly and inamyloid spore reactions to be homoplastic in Calodontes, and furthermore that spores of M. pearsoniana can show either amyloid or inamyloid reactions interchangeably. This raises doubt about the taxonomic value of this trait in Mycena systematics.

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publishing date
type
Contribution to journal
publication status
published
keywords
Amyloidity, ITS phylogeny, Mycena
in
Mycological Progress
volume
11
issue
3
pages
725 - 732
publisher
IHW-Verlag
external identifiers
  • scopus:84864128828
ISSN
1617-416X
DOI
10.1007/s11557-011-0782-x
language
English
LU publication?
no
id
7b33c786-187f-4c04-a4cf-17b7ee3a73ba
date added to LUP
2020-09-09 11:22:14
date last changed
2020-09-10 01:59:21
@article{7b33c786-187f-4c04-a4cf-17b7ee3a73ba,
  abstract     = {<p>In Mycena sectio Calodontes with otherwise amyloid spores, the inamyloid spores of Mycena pearsoniana Dennis ex Singer were a distinguishing feature for this species and its subsection Violacella. Although the original concept of this species was European, Singer chose to typify it with material collected in Mexico. The name has since been applied to all European collections with inamyloid spores and decurrent lamellae. Our phylogenetic analysis of 91 ITS sequences from European, North and South American Calodontes collections shows that European collections identified as M. pearsoniana fall into two well-supported sibling clades together with both inamyloid and weakly amyloid North American collections. Since the holotype of M. pearsoniana is in an advanced state of decay, we have selected an epitype from a North American locality with a climate comparable to the Mexican type locality. Our results show weakly and inamyloid spore reactions to be homoplastic in Calodontes, and furthermore that spores of M. pearsoniana can show either amyloid or inamyloid reactions interchangeably. This raises doubt about the taxonomic value of this trait in Mycena systematics.</p>},
  author       = {Harder, Christoffer Bugge and Lodge, D. Jean and Petersen, Ronald H. and Hughes, Karen W. and Blanco, Joaquin Cifuentes and Frøslev, Tobias Guldberg and Læssøe, Thomas},
  issn         = {1617-416X},
  language     = {eng},
  month        = {08},
  number       = {3},
  pages        = {725--732},
  publisher    = {IHW-Verlag},
  series       = {Mycological Progress},
  title        = {Amyloidity is not diagnostic for species in the Mycena pearsoniana complex (Mycena sectio Calodontes)},
  url          = {http://dx.doi.org/10.1007/s11557-011-0782-x},
  doi          = {10.1007/s11557-011-0782-x},
  volume       = {11},
  year         = {2012},
}