North European species of Ceriporiopsis (Basidiomycota) and their Asian relatives

Abstract

Juha Kinnunen and Tuomo Niemelä, Finnish Museum of Natural History, Botanical Museum, P.O. Box 7, FI-00014 University of Helsinki, Finland IntroductionThe genus Ceriporiopsis Donk is an assemblage of white-rot-causing basidiomycetes with monomitic structure and clamped hyphae. Ceriporiopsis as currently understood is obviously polyphyletic, as already noted by Ryvarden (1991; Ryvarden & Gilbertson 1993). The use of molecular and other new methods has revealed that many of the species included in the genus actually belong to other genera: C. pannocincta (Boidin 1998, Koker et al. 2003), C. rivulosa (Boidin 1998, Kim et al. 2003, Koker et al. 2003, C. subvermispora (Greslebin et al. 2004), C. mucida (Rajchenberg 2003) and C. subrufa represent examples of this kind of aliens. In the future most likely still other taxa, now addressed to Ceriporiopsis, will fi nd their place elsewhere, leaving behind a small genus of brownish polypores living on hardwood. Yao et al. (1999) found that C. gilvescens, the type species of the genus, is closely related to Aurantioporus alborubescens. According to Kim et al. (2003) Ceriporiopsis resinascens var. pseudogilvescens groups together with Antrodiella americana.In this paper we summarize the knowledge of the genus from the North European point of view. Here the genus is treated sensu stricto, comprising species close to the generic type C. gilvescens. Ceriporiopsis subrufa is considered to belong elsewhere because of its strongly cyanophilous skeletal hyphae, a character alien to Ceriporiopsis. Materials and methodsThe specimens listed are deposited in the Botanical Museum of the University of Helsinki (H), unless otherwise indicated. Herbarium abbreviations are according to Holmgren et al. (1990 Amyloid and dextrinoid reactions were tested in Melzer's reagent (IKI): 1.5 g KI (potassium iodide), 0.5 g I (crystalline iodine), 22 g chloral hydrate, aq. dest. 20 ml; IKI-means neither amyloid nor dextrinoid reaction.As a rule 30 spores were measured from each specimen selected for a closer scrutiny. Measurements were done using × 1000 magnifi cation, phase contrast and oil immersion; eyepiece scale bar showed a 1-µm-grid, and KeyA revised key to Ceriporiopsis in Northern Europe (including C. cremea and C. albonigrescens) is presented here.

Phylogenetic relationships in European Ceriporiopsis species inferred from nuclear and mitochondrial ribosomal DNA sequences

“…However, the latter species does not share the shape of basidia with C. aneirina. C. pseudogilvescens and C. resinascens are morphologically almost indistinguishable and have been separated only on the basis of basidiospore dimensions (Kinnunen & Niemelä 2005). The present work demonstrated small but constant differences between ITS sequences of the two species (Table 2).…”

“…The exsiccates are deposited in herbaria BRNM, H, TAA, BRNU, LY (herbarium abbreviations are according to http://sweetgum.nybg.org/ih/) and the private collection of Bernard Rivoire (records by Pieri & Rivoire 1996). Microscopic characters of collected specimens were re-examined in an Olympus SZX12 stereomicroscope and BX51 compound microscopes using techniques described by Kinnunen & Niemelä (2005). The basidiospore dimensions were measured using Quickphoto Micro software.…”

“…Moreover, C. resinascens var. pseudogilvescens has been raised to species rank (Kinnunen & Niemelä 2005).…”

Phylogeny and taxonomy of Ceriporiopsis (Polyporales) with descriptions of two new species from southern China

“…The MycoBank database (http://www.mycobank.org) includes 64 specific and infraspecific names in Ceriporiopsis and Index Fungorum (http://www.indexfungorum.org) registers 61 ones, but some species were transferred to other genera according to the Index Fungorum database, and the actual number of species is much lower; until now about 30 species were recognized by polypore specialists in the genus worldwide (Hattori 2002, Bernicchia & Ryvarden 2003, Kinnunen & Niemelä 2005, Fortey & Ryvarden 2007, Laessøe & Ryvarden 2010, Tomšovský et al 2010, Vlasák et al 2012, Cui 2013.…”

Niemelaea, a New Genus of Meruliaceae (Basidiomycota)

“…During a time, C. balaenae was sporadically recorded from Central Europe (Czech Republic, Slovakia) (Vampola, Pouzar, 1996), North Europe (Sweden, Finland) (Kinnunen, Niemelä, 2005), and also from Far East (Núñez, 2001) and European Russia (Spirin, Zmitrovich, 2003;Ezhov, Zmitrovich, 2015;Khimich et al, 2015).…”