Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A re-evaluation of Neotropical Junghuhnia s.lat. (Polyporales, Basidiomycota) based on morphological and multigene analyses

Full text
Author(s):
Westphalen, M. C. [1] ; Rajchenberg, M. [2] ; Tomsovsky, M. [3] ; Gugliotta, A. M. [1]
Total Authors: 4
Affiliation:
[1] Inst Bot, Nucleo Pesquisa Micol, Av Miguel Estefano 3687, BR-04301902 Sao Paulo, SP - Brazil
[2] Ctr Invest & Extens Forestal Andino Patagonico, Area Protecc Forestal, CC 14, RA-9200 Esquel, Chubut - Argentina
[3] Mendel Univ Brno, Fac Forestry & Wood Technol, Zemedelska 3, CZ-61300 Brno - Czech Republic
Total Affiliations: 3
Document type: Journal article
Source: PERSOONIA; v. 41, p. 130-141, DEC 2018.
Web of Science Citations: 2
Abstract

Junghuhnia is a genus of polypores traditionally characterised by a dimitic hyphal system with clamped generative hyphae and presence of encrusted skeletocystidia. However, recent molecular studies revealed that Junghuhnia is polyphyletic and most of the species cluster with Steccherinum, a morphologically similar genus separated only by a hydnoid hymenophore. In the Neotropics, very little is known about the evolutionary relationships of Junghuhnia s.lat. taxa and very few species have been included in molecular studies. In order to test the proper phylogenetic placement of Neotropical species of this group, morphological and molecular analyses were carried out. Specimens were collected in Brazil and used for DNA sequence analyses of the internal transcribed spacer and the large subunit of the nuclear ribosomal RNAgene, the translation elongation factor 1-alpha gene, and the second largest subunit of RNA polymerase II gene. Herbarium collections, including type specimens, were studied for morphological comparison and to confirm the identity of collections. The molecular data obtained revealed that the studied species are placed in three different genera. Specimens of Junghuhnia carneola represent two distinct species that group in a lineage within the phlebioid clade, separated from Junghuhnia and Steccherinum, which belong to the residual polyporoid clade. Therefore, the new genus Geesterania is proposed including two species, G. cameola comb. nov. and G. davidii sp. nov. Neotropical specimens identified as Junghuhnia nitida represent a different lineage from the European species and are described as Steccherinum neonitidum sp. nov. In addition, the new combinations Steccherinum meridionale, Steccherinum polycystidiferum and Steccherinum undigerum, as well as the new name Flaviporus tenuis, are proposed. (AU)

FAPESP's process: 11/17219-0 - Systematics and Biology of Polypores(Basidiomycota) from southern Brazil: genera Antrodiella, Flaviporus, and Junghuhnia Tyromyces.
Grantee:Mauro Carpes Westphalen
Support Opportunities: Scholarships in Brazil - Doctorate