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Perenniporia subrhizomorpha is introduced as a new species from North China on the basis of morphological and molecular evidence. Phylogenetically, based on ITS and nLSU regions, P. subrhizomorpha nested with two species belong to Perenniporia s.s. as a distinct lineage. Perenniporia subrhizomorpha is characterized by having an annual habit, resupinate and papery basidiomes, a dimitic hyphal system with crystal-covered generative hyphae in context, ellipsoid, truncated, dextrinoid basidiospores (5.7–6.5 × 4.3–5.5 μm), and absence of cystidia and cystidioles. Morphologically similar and phylogenetically related species to the new species are discussed.

Basidiocarps of Phylloporia are used as a source of natural medicine in China mainly in Shandong Province. Although the species diversity of Phylloporia has been well-studied worldwide, especially in China, the species identities of the medicinal basidiocarps are still unconfirmed. In this study, we sampled basidiocarps of Phylloporia from Shandong Province, China. On the basis of morphological and phylogenetic evidence as well as host-tree information, it is clarified that Phylloporia lonicerae on Lonicera japonica is the most widely used medicinal species of this genus, P. fontanesiae on Fontanesia fortunei is rarely used, and P. pulla on Pyrus is potentially used. The taxonomical status of these three species is briefly discussed, and P. lonicerae and P. pulla originally described from outside of China are described with illustrations based on specimens from Shandong Province, China. This clarification is crucial for medicinal studies and potential industry development of Phylloporia species.

Background: Sanghuangporus sanghuang (S. sanghuang) is a large wood-decaying mushroom that is considered a traditional Chinese herbal medicine because of its high medicinal value. The fundamental bioactive substances produced mainly include flavonoids, triterpenoids, and others. The expression of some specific genes in fungi can be effectively and selectively induced by fungal elicitors. Methods: To investigate the mechanism of fungal elicitors on the metabolites of S. sanghuang, we performed the metabolic and transcriptional profiling with elicitor treatment (ET) and without elicitor treatment (WET). A correlation analysis showed significant differences in triterpenoid biosynthetic pathways in the ET and WET groups. In addition, the structural genes associated with triterpenoids and metabolites of different triterpenoids in both groups were verified using quantitative real-time polymerase chain reaction (qRT-PCR) and high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Results: The results displayed that three triterpenoids betulinol, betulinic acid, and 2-hydroxyoleanolic acid were detected. After the excitation treatment, the level of betulinic acid reached 2.62 times that in the WET and that of 2-hydroxyoleanolic acid increased 114.67 times that in the WET. The qRT-PCR results of the expressions of the four genes related to secondary metabolic pathways, defense gene activation, and signal transduction showed significant variations between the ET and WET groups. Conclusions: the fungal elicitors have great potential to aggregate pentacyclic triterpenoid secondary metabolites in S. sanghuang.