1887

Abstract

Summary: The fine structure of the septum in the vegetative hypha of the mycoparasite is described. The cross-wall, continuous with the inner electron-lucent layer of the hyphal wall, bears a central pore with a flared margin occupied by a biumbonate electron-dense plug. A globose body, surrounded by a zone of ribosome-free cytoplasm, is situated next to the septal pore on each side of the cross-wall. In the neck of the haustorium, a globose body is normally observed only on that side of the septal pore next to the appressorium. Globose bodies appear structureless; they are electron-dense when fixed in potassium permanganate and of variable electron density in aldehyde-osmium fixations. Cytoplasmic continuity is maintained through the septal pore by the plasmalemma. In the sporangiophore and sporiferous branchlets, the septal plug bears an upper globose pro-tuberance and a lower obconic one. The hyphal septum in is ultrastructurally similar to that of . The possible functional and taxonomic significance of such septa is indicated.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-111-2-303
1979-04-01
2019-10-23
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-111-2-303
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error