Squamanita fungus is a very rare type of parasitic fungus. The mature squamanita looks as if it is grafted on another kind of mushroom. Middle image). But in essence, the fungus gall umbrella strangles the”victim” (host) to death through the hyphae, in order to achieve the purpose of”resurrecting the soul”. In the past, only 12 species of this genus have been reported globally, and only 2 specimens have been recorded in my country. Due to the difficulty of obtaining research materials, the family-level affiliation of this genus and its related genera has not been finalized, and the concept of species is unclear. Previously, researchers generally inferred what the”victim” was based on appearance characteristics, but since the master (host) of the”transplantation” often changes the appearance of the”victim”, the inference results may not be reliable.
The research team on the diversity and adaptive evolution of fungal lichens, Kunming Institute of Botany, Chinese Academy of Sciences, established the genus Mycelium and its close relatives on the basis of extensive sampling, borrowing specimens from domestic and foreign herbarium collections, and cooperation with domestic and foreign counterparts The phylogenetic framework of the genus, the host and host have been studied, and the following progress has been made:1. The DNA sequence information of S. schreieri, a model species of S. schreieri, was obtained for the first time. Through the reconstruction of multi-gene phylogeny, the bacteria were found Gallus gallus, Cystoderma, Phaeolepiota, Floccularia and Leucopholiota are independent branches, and these 5 genera together constitute a higher support rate The main branch of the family, namely Squamanitaceae (Squamanitaceae). Combined with the results of previous studies, the scope of the subject was redefined clearly. 2. The genus Fructus gallbladder is closely related to the genus Lepidoptera and the genus Frostinoides. 3. Three new species of the genus Amanita have been discovered. Both morphological and molecular evidence indicate that their hosts are all Amanita species, but they are different. 4. It was found that the”S. umbonata” widely distributed in the northern hemisphere is not a single species. It includes at least 4 species and belongs to 2 different species complexes.
The research results were published in the flagship journal of the International Fungus Association IMA Fungus on March 3, 2021 under the title”Squamanitaceae and three new species of Squamanita parasitic on Amanita basidiomes”. Assistant engineer Liu Jianwei is the first author of the paper, and researcher Yang Zhuliang is the corresponding author. This research was supported by the Qinghai-Tibet Plateau Second Scientific Research Project (2019QZKK0503) and the Lancang-Mekong River Basin and Surrounding Macrofungi Diversity Research Project (31961143010).
Figure 1 The host Squamanita mira (Squamanita mira) and its host Amanita kitamagotake (Amanita kitamagotake). The host on the upper part and the host at the base are shown on the left, the host (marked as C) and the host (marked as B) and”grafting marks” are shown in the middle, and the healthy host is shown on the right.