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Entoloma subgenus Leptonia in boreal-temperate Eurasia: towards a phylogenetic species concept.

Morozova OV, Noordeloos ME, Vila J - Persoonia (2014)

Bottom Line: Leptonia as well as the new sect.On the basis of the morphological and phylogenetical evidence E. alnetorum is reduced to a variety of E. tjallingiorum, and E. venustum is considered a variety of E. callichroum.Neotypes for E. dichroum, E. euchroum and E. lampropus are designated.

View Article: PubMed Central - PubMed

Affiliation: Komarov Botanical Institute, 197376, 2 Prof. Popov Str., St Petersburg, Russia;

ABSTRACT
This study reveals the concordance, or lack thereof, between morphological and phylogenetic species concepts within Entoloma subg. Leptonia in boreal-temperate Eurasia, combining a critical morphological examination with a multigene phylogeny based on nrITS, nrLSU and mtSSU sequences. A total of 16 taxa was investigated. Emended concepts of subg. Leptonia and sect. Leptonia as well as the new sect. Dichroi are presented. Two species (Entoloma percoelestinum and E. sublaevisporum) and one variety (E. tjallingiorum var. laricinum) are described as new to science. On the basis of the morphological and phylogenetical evidence E. alnetorum is reduced to a variety of E. tjallingiorum, and E. venustum is considered a variety of E. callichroum. Accordingly, the new combinations E. tjallingiorum var. alnetorum and E. callichroum var. venustum are proposed. Entoloma lepidissimum var. pauciangulatum is now treated as a synonym of E. chytrophilum. Neotypes for E. dichroum, E. euchroum and E. lampropus are designated.

No MeSH data available.


Phylogenetic tree derived from Bayesian analysis, based on nrITS1-5.8S-ITS2 data. 2. Main subtree – subg. Leptonia clade. Posterior probability (PP) values from the Bayesian analysis followed by bootstrap values from the Maximum Parsimony (BS, %) analysis are added to the left of a node (PP/BS). Type specimens are marked with red points.
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Figure 2: Phylogenetic tree derived from Bayesian analysis, based on nrITS1-5.8S-ITS2 data. 2. Main subtree – subg. Leptonia clade. Posterior probability (PP) values from the Bayesian analysis followed by bootstrap values from the Maximum Parsimony (BS, %) analysis are added to the left of a node (PP/BS). Type specimens are marked with red points.

Mentions: Two highly supported subclades are recognized in the Leptonia clade (Fig. 1, 2) corresponding to two different taxonomic sections – sect. Leptonia (1.0/85) and sect. Dichroi (1.0/100), newly recognized here. Entoloma callichroum, E. coelestinum, E. lepidissimum and E. allochroum form independent subclades.


Entoloma subgenus Leptonia in boreal-temperate Eurasia: towards a phylogenetic species concept.

Morozova OV, Noordeloos ME, Vila J - Persoonia (2014)

Phylogenetic tree derived from Bayesian analysis, based on nrITS1-5.8S-ITS2 data. 2. Main subtree – subg. Leptonia clade. Posterior probability (PP) values from the Bayesian analysis followed by bootstrap values from the Maximum Parsimony (BS, %) analysis are added to the left of a node (PP/BS). Type specimens are marked with red points.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150075&req=5

Figure 2: Phylogenetic tree derived from Bayesian analysis, based on nrITS1-5.8S-ITS2 data. 2. Main subtree – subg. Leptonia clade. Posterior probability (PP) values from the Bayesian analysis followed by bootstrap values from the Maximum Parsimony (BS, %) analysis are added to the left of a node (PP/BS). Type specimens are marked with red points.
Mentions: Two highly supported subclades are recognized in the Leptonia clade (Fig. 1, 2) corresponding to two different taxonomic sections – sect. Leptonia (1.0/85) and sect. Dichroi (1.0/100), newly recognized here. Entoloma callichroum, E. coelestinum, E. lepidissimum and E. allochroum form independent subclades.

Bottom Line: Leptonia as well as the new sect.On the basis of the morphological and phylogenetical evidence E. alnetorum is reduced to a variety of E. tjallingiorum, and E. venustum is considered a variety of E. callichroum.Neotypes for E. dichroum, E. euchroum and E. lampropus are designated.

View Article: PubMed Central - PubMed

Affiliation: Komarov Botanical Institute, 197376, 2 Prof. Popov Str., St Petersburg, Russia;

ABSTRACT
This study reveals the concordance, or lack thereof, between morphological and phylogenetic species concepts within Entoloma subg. Leptonia in boreal-temperate Eurasia, combining a critical morphological examination with a multigene phylogeny based on nrITS, nrLSU and mtSSU sequences. A total of 16 taxa was investigated. Emended concepts of subg. Leptonia and sect. Leptonia as well as the new sect. Dichroi are presented. Two species (Entoloma percoelestinum and E. sublaevisporum) and one variety (E. tjallingiorum var. laricinum) are described as new to science. On the basis of the morphological and phylogenetical evidence E. alnetorum is reduced to a variety of E. tjallingiorum, and E. venustum is considered a variety of E. callichroum. Accordingly, the new combinations E. tjallingiorum var. alnetorum and E. callichroum var. venustum are proposed. Entoloma lepidissimum var. pauciangulatum is now treated as a synonym of E. chytrophilum. Neotypes for E. dichroum, E. euchroum and E. lampropus are designated.

No MeSH data available.