Abstract
The structure and dynamics of microtubular cytoskeleton and of callose walls in normal pollen mother cells (PMC) of tobacco N. tabacum L. and in cells with intercellular translocation of nuclear material (cytomictic) was studied in the course of the cell cycle. The microtubular cytoskeleton was established as playing no obvious role in the process of cytomixis. The elevated level of cytomictic seems to be due to disturbances of synthesis of callose walls as a result of their attenuation and perforation. Possible causes of cytomictic in tobacco PMC at the cellular level are discussed.
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