ULTRASTRUCTURE OF AERIAL HYPHAE IN LINDERINA PENNISPORA

Ultrathin sections of the aerial hyphae of Linderina pennispora, fixed in glutaraldehyde, show the wall to be composed of an outer electron-dense layer and an inner less-dense one. The fully developed septum is plugged by electrondense material. A similar septum exists at the base of the pseudophialide. Cytoplasmic continuity on both sides of the septum is maintained by the plasmalemma which passes through the septal pore around the periphery of the plug. Membrane-lined vesicles may occur in the wall, between the wall and the plasmalemma and internal to the plasmalemma. Ribosome-like particles are numerous in the cytoplasm and endoplasmic reticulum is virtually absent. © 1969 OXFORD UNIVERSITY PRESS.