2024/12/30 by Qianquan Jiang, Z Kang, Xubo Wang +1 · 1 voice
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Mycorrhizal Fungi and Plant Interactions #Plant Pathogens and Fungal Diseases #Yeasts and Rust Fungi Studies
paper · pdf · doi:10.3897/mycokeys.111.125933
openalex publication_date 2024/12/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Three new fungal species, Septobasidium macrobasidium , S. puerense and S. wuliangshanense , are proposed based on a combination of the morphological features and molecular evidence. The taxon S. macrobasidium is characterized by the coriaceous basidiomata with a cream surface, cylindrical basidia, straight, 4-celled, subglobose or ovoid probasidia and thin-walled, narrowly cylindrical basidiospores with septa, measuring as 7–9 × 3.5–4.5 µm, the haustoria consisting of irregularly coiled hyphae; in addition, this fungus was found associated with the insect of Diaspididae. The species S. puerense is characterised by resupinate coriaceous basidiomata with a cinnamon brown to chestnut brown surface, cylindrical or slightly irregular basidia, 2-3-celled, slightly curved, subglobose to pyriform probasidia, probasidia cell persistent after the formation of the basidia and the haustoria with two types consisting of irregularly coiled hyphae and spindle-shape. The fungus was found associated with the insect species Pseudaulacaspis pentagona . The species S. wuliangshanense is characterised by the coriaceous basidiomata with a slightly brown surface, cylindrical or slightly irregular basidia, 2-3-celled, straight or slightly curved, pyriform, subglobose or ovoid and probasidia, haustoria consisting of irregularly coiled hyphae, associated with the insect genus Aulacaspis . Sequences of internal transcribed spacer region (ITS) were analysed maximum likelihood, maximum parsimony and Bayesian inference methods. The new species S. macrobasidium was clustered with S. maesae . Furthermore, S. puerense was retrieved as a sister to S. carestianum . The phylogenetic tree, inferred from the ITS sequences, highlighted that S. wuliangshanense was the sister to S. aquilariae with strong supports. Application of PHI test to the ITS tree-locus sequences revealed no recombination level within phylogenetically related species.