Cupreoboletus (Boletaceae, Boletineae), a new monotypic genus segregated from Boletus sect. Luridi to reassign the Mediterranean species B. poikilochromus

Cupreoboletus is erected as a new monospecific genus of Boletaceae to accommodate the thermophilic southern European species Boletus poikilochromus, characterized by discoloration toward copper-red tints overall, hymenophore forming tiny crystals on drying, a pervasive and long lasting sweet odor an...

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Bibliographic Details
Published in:Mycologia 2015-11, Vol.107 (6), p.1254-1269
Main Authors: Gelardi, Matteo, Simonini, Giampaolo, Ercole, Enrico, Davoli, Paolo, Vizzini, Alfredo
Format: Article
Language:English
Subjects:
Basidiomycota
Basidiomycota - classification
Basidiomycota - genetics
Basidiomycota - growth & development
Basidiomycota - isolation & purification
Boletales
Boletus
Boletus martaluciae
DNA, Fungal - genetics
DNA, Ribosomal Spacer - genetics
European boletes
Fungal Proteins - genetics
molecular phylogenetics
Molecular Sequence Data
Peptide Elongation Factor 1 - genetics
Phylogeny
RNA Polymerase II - genetics
Spores, Fungal - classification
Spores, Fungal - genetics
Spores, Fungal - growth & development
Spores, Fungal - isolation & purification
SYSTEMATICS
taxonomy
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Summary:Cupreoboletus is erected as a new monospecific genus of Boletaceae to accommodate the thermophilic southern European species Boletus poikilochromus, characterized by discoloration toward copper-red tints overall, hymenophore forming tiny crystals on drying, a pervasive and long lasting sweet odor and presence of pseudocystidia. Macro- and microscopic descriptions of the species based on re-examination of the type material and recent Italian collections including additional topotypical samples are provided and accompanied by photos and line drawings of the main anatomical structures. In addition, an epitype specimen is selected. Phylogenetic relationships were inferred from multigene molecular analysis based on partial sequences of the nuc rDNA 28S D1/D2 (28S) and internal transcribed spacer (ITS) regions and genes for ribosomal RNA polymerase II subunits 1 (rpb1) and 2 (rpb2) and translation-elongation factor 1-α (tef1α). Ecological context, geographical range and delimitation from closely allied taxa also were elucidated. B. martaluciae is treated as a synonym of C. poikilochromus according to the morphological and molecular comparative study.
ISSN:0027-5514
1557-2536
DOI:10.3852/15-070