Formation and function of phragmoplast during successive cytokinesis stages in higher plant meiosis.

Cytoskeletal rearrangements were studied during meiotic telophase in a number of monocotyledonous plant species. Wild type and abnormal meiosis (in wide cereal hybrids, meiotic mutants and allolines) was analyzed. It was found that central spindle fibers that move centrifugally, along with newly-formed MTs, are the basis of phragmoplast formation and function in PMCs of monocotyledonous plant species with successive cytokinesis stages. A model for centrifugal movement of the meiotic phragmoplast is proposed; this model is a modification of the corresponding process during B-anaphase.