ALTERING OF PHRAGMOPLAST ORIENTATION AS A RESULT OF EXCESSIVE CENTRIFUGAL MOVEMENT IN THE ABSENCE OF CELL PLATE
N. V. Shamina,1 N. M. Kovaleva,1 O. A. Shatskaya 2
1 Institute of Cytology and Genetics, SB RAS, Novosibirsk, and
2 P. P. Lukyanenko Agricultural Institute, Krasnodar;
e-mail: shamina@bionet.nsc.ru
The inability of phragmoplast to stop its centrifugal movement after reaching the mother cell membrane is
described in abnormal meiosis with the arrest of cell plate formation. The excess of phragmoplast expansion leads to
rotation of the whole telophase figure (phragmoplast with daughter nuclei) within the cell through 90°. It has been
suggested that this phenomenon may occur because of a the lack of signal stopping cytokinesis. Such a signal arises
due to formation of daughter cell membranes.
Key words: cell plate, cytokinesis, cytoskeleton, phragmoplast, plant cell division, meiosis
Back
Contents
Main
|
