THE ROLE OF MICROTUBULAR CYTOSKELETON AND CALLOSE WALLS IN THE CYTOMIXIS PROCESS IN TOBACCO
(NICOTIANA TABACUM L.) POLLEN MOTHER CELLS
Yu. V. Sidorchuk, E. V. Deineko, V. K. Shumny
Institute of Cytology and Genetics, Siberian Branch of RAS, Novosibirsk;
e-mail: sidorch@bionet.nsc.ru
We have studied the microtubule cytoskeleton structure and callose walls deposition in the course of meiosis
at the cytomictic and normal tobacco (N. tabacum L.) PMCs. It was ascertained that microtubule cytoskeleton
did not play an evident part in the process of cytomixis. Increased cytomixis frequency probably is determined
by irregular callose walls deposition. The possible reasons of nuclear material passage between tobacco
PMCs at the cellular level are discussed.
Key words: cytomixis, pollen mother cells, meiosis, cytoskeleton, callose walls
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