Mise en évidence de la dissolution des cloisons dolipores préalable à la migration nucléaire chez Dacrymyces stillatus Nees : Fries (Basidiomycete)

Abstract

In the process of dicaryotisation of haploïd mycelium in Dacrymyces stillatus, the complex dolipore septum/parenthesomes desintegrates to open a way to the migrant nucleus. Ultrastructure images show that this disintegration begins first simultaneously at the level of parenthesomes and septal swellings, then at the level of the septum itself with the enlargement of its pore to enable the passage of the migrant nucleus, the role of which is to dicaryotize the cells of the haploïd mycelium.