Abstract
Sanghuangporus toxicodendri (Hymenochaetales) is described as new based on collections made from Shennongjia Forestry District, Hubei Province, China. All studied basidiocarps grew on living trunks of Toxicodendron sp. This new species is characterized by having perennial, effused-reflexed to pileate basidiocarps; pore surface brownish yellow or yellowish brown, pores 7–9 per mm; context 1–5 mm thick or almost invisible; setae ventricose, dark brown, 26–42 × 7–10 μm; basidia 4-sterigmate or occasionally 2-sterigmate; basidiospores broadly ellipsoid, smooth, brownish yellow, slightly thick-walled, mostly 3.5–4 × 2.8–3 μm. Maximum likelihood and Bayesian inference phylogenies inferred from internal transcribed spacer (ITS) region of rDNA indicated that Sanghuangporus spp. formed a monophyletic clade and resolved as a sister to Tropicoporus spp., and six strains of S. toxicodendri formed a monophyletic group which is sister to S. quercicola. An identification key to known species of Sanghuangporus is provided.
Highlights
The Maximum Likelihood (ML) tree shows that Sanghuangporus spp. formed a monophyletic clade (BS = 93%, Posterior Probability (PP) = 1) and resolved as a sister to Tropicoporus spp. (BS = 92%, PP = 1) (Fig. 1)
Six strains of Sanghuangporus toxicodendri formed a monophyletic group with statistical supports (BS = 78%, PP = 1), which was sister to S. quercicola L
Zhu et al.’s (2019) phylogenetic study showed the monophyly of the genus Sanghuangporus spp., and the result coincides with the present study (Fig. 1)
Summary
Wu et al and Tropicoporus L.W. Zhou et al were recently segregated from the broad generic concept of Inonotus P. Karst (Zhou et al 2016) The former two genera differ from Inonotus s. Sanghuangporus accommodates some important medicinal fungal species generally are called “Sanghuang” (means yellow organism grows on Morus) in China and Korea, and “Meshimakobu” in Japan. The generic type, was detected by Wu et al (2012) as the genuine Sanghuang species growing exclusively on Morus in the wild. 13 species of Sanghuangporus were known (Ghobad-Nejhad 2015; Tomsovsky 2015; Zhou et al 2016; Zhu et al 2017). We present a new species of Sanghuangporus sp. growing on Toxicodendron sp. collected from Shennongjia Forestry District, Hubei Province of China
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