| Pak. J. Bot., 34(4): 405-410, 2002 | Back to Contents | ||||
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Updated: 24-05-12 | ||||
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Mitotic apparatus movement and cell wall
patterning in root apical meristem of Allium cepa B. Sh. Behboodi and L. Samadi Abstract: The positioning of cell wall in a dividing cell is very crucial for organ development. It is determined by the cortical information of the cytoskeleton in G2 phase called Preprophase Band (PPB). The cell plate is also perpendicular to the Mitotic Apparatus (MA). Thus coordination of PPB, the MA orientation and the position of the aforesaid future cell wall is of critical importance in these cells. Cells with oblique MAs and their position in the apical meristem was studied by cytological techniques. The role of microfilaments in cell plate formation is described by application of Cytochalasin B. The oblique MAs have a developmental role in the formation of long cortex cells and the central cylinder. Actin filaments are responsible for organization of the cell wall position. |
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