Contribution de l'étude du polymorphisme enzymatique à la systématique des Pleurotes des Ombellifères

Abstract

This study presents a contribution to the systematics of Pleurotus species growing on Umbellifers, which are classically divided into three types. Studies of enzyme polymorphism by electrophoresis performed on synthetized dikaryotic mycelia and their haploid components (homokaryons) allowed a genotypic determination of "wild" dikaryons, and a statistical treatment of homokaryotic genotypes. These results show a distinction between P. nebrodensis on one hand, and P. eryngii and P. ferulae on the other hand, and support the hypothesis of a division of P. nebrodensis into two types at least as distinct from each other as P. eryngii from P. ferulae. Different hypotheses related to internal dynamics and evolution of this group of Basidiomycetes are discussed.