Work

Morphology, multilocus phylogeny, and toxin analysis reveal two new species of Amanita section Amanita (Amanitaceae) from China

Year: 2025

Type: article

Abstract: Globally, many species of Amanita sect. Amanita (Amanitaceae, Agaricales) cause poisoning after consumption. Amanita flavomelleicepssp. nov. and Amanita parvisychnopyramissp. nov., two new species of A. section Amanita from China, are described here. Morphology and molecular phylogenetic analyses based on five genes (ITS, nrLSU, RPB2, TEF1-α, and TUB2) revealed these two taxa as distinct species. Amanita flavomelleicepssp. nov. is characterized by a yellowish-to-yellow pileus covered by verrucose volval remnants; a subglobose basal bulb with shortly limbate; subglobose to broadly ellipsoid, inamyloid basidiospores. Amanita parvisychnopyramissp. nov. is characterized by a brownish pileus covered by subconical volval remnants; an ovate basal bulb with a cream limbate; and subglobose-to-broadly ellipsoid, inamyloid basidiospores. Screening for the most notorious toxins by liquid chromatography tandem mass spectrometry (LC-MS/MS) revealed the presence of ibotenic acid (IBO) and muscimol (MUS) in A. parvisychnopyramis and the absence of these toxins in A. flavomelleiceps.

Source: MycoKeys

DOI: 10.3897/mycokeys.118.141080

Authors: Yu-Ting Su, Fei Xu, Ping Zhang, Peng-Tao Deng, Meng-Meng Lai, Zuo-Hong Chen

Institutions: Hunan Normal University, Yichun University, Ningxia Center for Diseases Prevention and Control

Language: English

Topic: Plant and Fungal Species Descriptions

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: gold

Estimated APC paid: $970

Funders: National Natural Science Foundation of China, Hunan Normal University, Natural Science Foundation of Hunan Province