Mitosis, Cytokinesis and Colony Formation in Pediastrum boryanum

Publisher Website
Google Scholar
Abstract
Uninucleate cells of Pediastrum become multinucleate by a series of synchronous mitoses. Mitotic nuclei are enclosed by a perinuclear envelope of endoplasmic reticulum. Cytoplasmic cleavage of the multinucleate cells leads to the production of uninucleate, biflagellate zoospores (zooids) which are subsequently released into a lenticular vesicle through a rupture in the outer layer of the parental cell wall. Within the vesicle, presumably derived from part of the inner layer of parental wall, the zooids swarm actively before aggregating in a planar array. Bands of microtubules underlie the plasmalemma of the zooids which, when the zooids aggregate, are usually coplanar with the newly formed colony. The role of microtubules in patterned colony formation and in the development of the characteristic horns on peripheral cells of colonies of Pediastrum is discussed.

This publication has 0 references indexed in Scilit: