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Article
Published: 2018-05-29

Morphological and molecular identification of a new species of Perenniporia (Polyporales, Basidiomycota) in North America

College of Biodiversity Conservation and Utilisation, Southwest Forestry University, Kunming 650224, P.R. China
College of Life Sciences, Southwest Forestry University, Kunming 650224, P.R. China
Farlow Herbarium of Cryptogamic Botany, Harvard University, Cambridge, MA 02138, USA
College of Biodiversity Conservation and Utilisation, Southwest Forestry University, Kunming 650224, P.R. China Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, P.R. China
Phylogenetic analysis Polypores Taxonomy Wood-rotting fungi Fungi

Abstract

A new poroid wood-inhabiting fungal species, Perenniporia bostonensis sp. nov., is proposed based on morphological and molecular characters. The species is characterized by resupinate, cream to buff pore surface; a dimitic hyphal system with skeletal hyphae strongly dextrinoid, unbranched, interwoven and a distinct wide lumen; ovoid to broad ellipsoid, non-truncate, hyaline, distinct thick-walled, smooth, dextrinoid basidiospores, 3.5–4.5 × 3–4 µm. The internal transcribed spacer (ITS) and the large subunit (LSU) regions of nuclear ribosomal RNA gene sequences of the studied samples were generated, and phylogenetic analyses were performed with maximum likelihood, maximum parsimony and bayesian inference methods. The phylogenetic analysis based on molecular data of ITS+nLSU sequences showed that P. bostonensis recognized in Perenniporia sensu stricto. The new species formed a monophyletic lineage with a strong support (100% BS, 100% BP, 1.00 BPP) and was closely related to P. bannaensis and P. koreana. Both morphological and molecular characters confirmed the placement of the new species in Perenniporia.