Skip to main content

Toward a better understanding of the infrageneric relationships in Cortinarius (Agaricales, Basidiomycota).

Publication ,  Journal Article
Peintner, U; Moncalvo, J-M; Vilgalys, R
Published in: Mycologia
September 2004

Research on the molecular systematics of Cortinarius, a species-rich mushroom genus with nearly global distribution, is just beginning. The present study explores infrageneric relationships using rDNA ITS and LSU sequence data. One large dataset of 132 rDNA ITS sequences and one combined da-taset with 54 rDNA ITS and LSU sequences were generated. Hebeloma was used as outgroup. Bayesian analyses and maximum-likelihood (ML) analyses were carried out. Bayesian phylogenetic inference performed equally well or better than ML, especially in large datasets. The phylogenetic analysis of the combined dataset with species representing all currently recognized subgenera recovered seven well-supported clades (Bayesian posterior probabilities BPP > 90%). These major clades are: /Myxacium s.l., /subg. Cortinarius, the /phlegmacioid clade (including the subclades /Phlegmacium and /Delibuti), the /calochroid clade (/Calochroi, /Ochroleuci and /Allutus), the /telamonioid clade (/Telamonia, /Orellani, /Anomali), /Dermocybe s.l. and /Myxotelamonia. Our results show that Cortinarius consists of many lineages, but the relationships among these clades could not be elucidated. On one hand, the low divergence in rDNA sequences can be held responsible for this; on the other hand, taxon sampling is problematic in Cortinarius phylogeny. Because of the incredibly high diversity (~2000 Cortinarius species), our sampling included <5% of the known species. By choosing type species of subgenera and sections, our sampling is strongly biased toward Northern Hemisphere taxa. More extensive taxon sampling, especially of species from the Southern Hemisphere, is essential to resolve the phylogeny of this important genus of ectomycorrhizal fungi.

Duke Scholars

Published In

Mycologia

EISSN

1557-2536

ISSN

0027-5514

Publication Date

September 2004

Volume

96

Issue

5

Start / End Page

1042 / 1058

Related Subject Headings

  • Mycology & Parasitology
  • 3108 Plant biology
  • 3107 Microbiology
  • 3104 Evolutionary biology
  • 0607 Plant Biology
  • 0605 Microbiology
  • 0603 Evolutionary Biology
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Peintner, U., Moncalvo, J.-M., & Vilgalys, R. (2004). Toward a better understanding of the infrageneric relationships in Cortinarius (Agaricales, Basidiomycota). Mycologia, 96(5), 1042–1058.
Peintner, Ursula, Jean-Marc Moncalvo, and Rytas Vilgalys. “Toward a better understanding of the infrageneric relationships in Cortinarius (Agaricales, Basidiomycota).Mycologia 96, no. 5 (September 2004): 1042–58.
Peintner U, Moncalvo J-M, Vilgalys R. Toward a better understanding of the infrageneric relationships in Cortinarius (Agaricales, Basidiomycota). Mycologia. 2004 Sep;96(5):1042–58.
Peintner, Ursula, et al. “Toward a better understanding of the infrageneric relationships in Cortinarius (Agaricales, Basidiomycota).Mycologia, vol. 96, no. 5, Sept. 2004, pp. 1042–58.
Peintner U, Moncalvo J-M, Vilgalys R. Toward a better understanding of the infrageneric relationships in Cortinarius (Agaricales, Basidiomycota). Mycologia. 2004 Sep;96(5):1042–1058.

Published In

Mycologia

EISSN

1557-2536

ISSN

0027-5514

Publication Date

September 2004

Volume

96

Issue

5

Start / End Page

1042 / 1058

Related Subject Headings

  • Mycology & Parasitology
  • 3108 Plant biology
  • 3107 Microbiology
  • 3104 Evolutionary biology
  • 0607 Plant Biology
  • 0605 Microbiology
  • 0603 Evolutionary Biology