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Taxonomy and evolutionary relationships within species of section Rimosae (Inocybe) based on ITS, LSU and mtSSU sequence data.

Larsson E, Ryberg M, Moreau PA, Delcuse Mathiesen A, Jacobsson S - Persoonia (2009)

Bottom Line: The results indicate that recognizing Auritella on the genus level renders Inocybe paraphyletic.Rimosae were found to be distributed over two strongly supported clades, Maculata and Rimosae s.s.A key to the identified species of the Maculata and Rimosae s.s. clades which occur in Northwest Europe is provided.

View Article: PubMed Central - PubMed

Affiliation: Department of Plant and Environmental Sciences, University of Gothenburg, P.O. Box 461, SE-405 30 Göteborg, Sweden;

ABSTRACT
The present study aimed at elucidating the structure of Inocybe subg. Inosperma sect. Rimosae but included also representatives from subg. Mallocybe and the genus Auritella. Phylogenetic relationships were inferred using ITS, LSU and mtSSU sequence data. The analyses recovered the ingroup as a monophyletic, strongly supported clade. The results indicate that recognizing Auritella on the genus level renders Inocybe paraphyletic. The species traditionally placed in sect. Rimosae were found to be distributed over two strongly supported clades, Maculata and Rimosae s.s. The Maculata clade clusters with sect. Cervicolores and the two represent subg. Inosperma in a strict sense. Rimosae s.s. emerges as an independent, supported clade well separated from Inosperma s.s. Twenty-one terminal groups were correlated with morphologically distinct species. In addition several taxa on single branches and minor less supported clades were recovered. A key to the identified species of the Maculata and Rimosae s.s. clades which occur in Northwest Europe is provided.

No MeSH data available.


Related in: MedlinePlus

One of the equally most parsimonious trees obtained from the maximum parsimony analysis of the Rimosae s.s. subclade D, presented as a mid-point rooted phylogram. Bootstrap values are indicated on branches.
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Figure 3: One of the equally most parsimonious trees obtained from the maximum parsimony analysis of the Rimosae s.s. subclade D, presented as a mid-point rooted phylogram. Bootstrap values are indicated on branches.

Mentions: The realigned dataset of 18 taxa in the Rimosae s.s. subclade D included 2 812 characters. After exclusion of regions with incomplete data, mainly from the mtSSU, 2 421 characters remained for the analysis. Of these 2 266 were constant, 57 were variable and parsimony uninformative, and 98 were parsimony informative. The heuristic search recovered 675 most parsimonious trees (length = 190, CI = 0.8526, RI = 0.9111). Fig. 3 illustrates one of these as a mid-point rooted phylogram. The bootstrap analysis recovered five strongly supported (above 90 %) clades of which four have the same topology as in the complete analyses, viz. I. squamata (100 %), Inocybe sp. (100 %), I. flavella (100 %), and I. cfr flavella A (99 %) while I. cfr flavella B is supported only together with I. hygrophorus (100 %). Inocybe flavella + I. xanthocephala (91 % in the large parsimony analysis) is not supported.


Taxonomy and evolutionary relationships within species of section Rimosae (Inocybe) based on ITS, LSU and mtSSU sequence data.

Larsson E, Ryberg M, Moreau PA, Delcuse Mathiesen A, Jacobsson S - Persoonia (2009)

One of the equally most parsimonious trees obtained from the maximum parsimony analysis of the Rimosae s.s. subclade D, presented as a mid-point rooted phylogram. Bootstrap values are indicated on branches.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2802730&req=5

Figure 3: One of the equally most parsimonious trees obtained from the maximum parsimony analysis of the Rimosae s.s. subclade D, presented as a mid-point rooted phylogram. Bootstrap values are indicated on branches.
Mentions: The realigned dataset of 18 taxa in the Rimosae s.s. subclade D included 2 812 characters. After exclusion of regions with incomplete data, mainly from the mtSSU, 2 421 characters remained for the analysis. Of these 2 266 were constant, 57 were variable and parsimony uninformative, and 98 were parsimony informative. The heuristic search recovered 675 most parsimonious trees (length = 190, CI = 0.8526, RI = 0.9111). Fig. 3 illustrates one of these as a mid-point rooted phylogram. The bootstrap analysis recovered five strongly supported (above 90 %) clades of which four have the same topology as in the complete analyses, viz. I. squamata (100 %), Inocybe sp. (100 %), I. flavella (100 %), and I. cfr flavella A (99 %) while I. cfr flavella B is supported only together with I. hygrophorus (100 %). Inocybe flavella + I. xanthocephala (91 % in the large parsimony analysis) is not supported.

Bottom Line: The results indicate that recognizing Auritella on the genus level renders Inocybe paraphyletic.Rimosae were found to be distributed over two strongly supported clades, Maculata and Rimosae s.s.A key to the identified species of the Maculata and Rimosae s.s. clades which occur in Northwest Europe is provided.

View Article: PubMed Central - PubMed

Affiliation: Department of Plant and Environmental Sciences, University of Gothenburg, P.O. Box 461, SE-405 30 Göteborg, Sweden;

ABSTRACT
The present study aimed at elucidating the structure of Inocybe subg. Inosperma sect. Rimosae but included also representatives from subg. Mallocybe and the genus Auritella. Phylogenetic relationships were inferred using ITS, LSU and mtSSU sequence data. The analyses recovered the ingroup as a monophyletic, strongly supported clade. The results indicate that recognizing Auritella on the genus level renders Inocybe paraphyletic. The species traditionally placed in sect. Rimosae were found to be distributed over two strongly supported clades, Maculata and Rimosae s.s. The Maculata clade clusters with sect. Cervicolores and the two represent subg. Inosperma in a strict sense. Rimosae s.s. emerges as an independent, supported clade well separated from Inosperma s.s. Twenty-one terminal groups were correlated with morphologically distinct species. In addition several taxa on single branches and minor less supported clades were recovered. A key to the identified species of the Maculata and Rimosae s.s. clades which occur in Northwest Europe is provided.

No MeSH data available.


Related in: MedlinePlus