DYNAMICS OF MICROTUBULAR CYTOSKELETON IN HIGHER PLANT MEIOSIS. VII. MECHANISMS OF THE SIMULTANEOUS CYTOKINESIS
N. V. Shamina, N. V. Dorogova
Institute of Cytology and Genetics, Novosibirsk;
e-mail: shamina@bionet.nsc.ru
Rearrangements of microtubular cytoskeleton during telophase in pollen mother cells of some dicotyledon plants
with the simultaneous cytokinesis during normal and abnormal meiosis were studied. At telophase I, a potentially
functional phragmoplast forms between daughter nuclei, but no cell plate is present. During interkinesis, the
phragmoplast plays the role of an interphase cytoskeleton array. Dynamics of microtubule reorganization in polar
regions of the telophase spindle is discussed in addition to the role played by microtubule convergence centers in
cytoskeleton rearrangements during meiosis.
Key words: microtubules, pollen mother cells, meiosis simultaneous cytokinesis, spindle poles,
phragmoplast
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