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ABSTRACT
Twenty-five carpophores were sampled and the influence of various factors on concentration and distribution of principal neutral (phalloin, phalloidin, phallisin) and acid (phallacidin and phallisacin) phallotoxins in Amanita phalloides was investigated. The nature of the organ investigated is stressed; for phallotoxins, the volva is most toxic. In addition, specimens collected from ordinary lowland countryside contained twice the toxin quantities as those from a medium altitude site; these quantities depend on a high neutral molecule content and particularly phalloidin. Substantial variations in toxin levels between two consecutive collection operations during the mushroom season were also observed whatever the collection site. This indicated a fall in these values at the end of the seasonal cycle. Although toxin levels depended on collection date, predominance of neutral or acid molecules remained constant. Phallotoxin levels also varied by various stages of carpophore development. In specimens from the plain, this resulted in a different distribution of neutral and acid toxins at maturity. Determination of toxin levels at various stages of maturation varied according to the specimens analyzed.
