ISSN:
1615-6102
Keywords:
Biogenesis
;
Cytochemistry
;
Ribonucleoprotein bodies
;
Ribosomes
;
Timmiella barbuloides (Musci)
;
Ultrastructure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Vegetative cells of the gametophyte phase of the mossTimmiella barbuloides (Pottiales) are characterized by large cytoplasmic bodies of spherical shape (SBs) whose ribonucleoprotein composition is cytochemically demonstrated. SBs seem to be derived from massive aggregation of cytoplasmic ribosomes, with possible participation by rough endoplasmic reticulum elements. SBs have been found in stereids, parenchymatous cells and young hydroids of the gametophyte stem, and in euricysts of the leaf nerve. The SBs develop early in the course of cell differentiation and, once formed, persist until advanced stages of cell senescence.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01276264
