Amanita muscaria: chemistry, biology, toxicology, and ethnomycology

Introduction

The fly agaric (Amanita muscaria) and the closely related A. pantherina are the principal species implicated in the so-called 'pantherina-muscaria' poisoning syndrome, a central nervous system disorder that is usually non‑fatal but can produce marked neuropsychiatric effects. Earlier work established the presence of isoxazole derivatives (notably ibotenic acid and muscimol) as the primary bioactive constituents, but uncertainties remained about the full chemical complement of the species, the biological mechanisms of action, variation in toxin content, and the cultural uses of the mushroom. Michelot sets out to synthesise current knowledge across multiple domains — medical, chemical, pharmacological, biological and ethnomycological — with particular emphasis on the chemistry and biological properties of the substances found in A. muscaria and related taxa. The review assembles clinical descriptions of poisoning, experimental toxicology, methods for detecting active compounds, pigment chemistry, and the mushroom's historical and cultural roles to provide a comprehensive account of its distinctive features.