Pre-prophase microtubule band The first sign of the forthcoming cell division is the aggregation of cortical microtubules into a girdle around the cell, forming the so-called pre-prophase band of microtubules as diagrammatically shown here in longitudinal (left) and cross-sectional (right) views. The band is formed at the site where the new cell wall between two sister cells appears at the end of the cytokinesis, and coincides with the future metaphase plate. This phase is short-lived as the microtubules become reassembled into the mitotic spindle at prophase of mitosis. |
![]() Illustration from: Weier, Stocking & Barbour, 1974, Botany: An Introduction to Plant Biology, 5th Ed. This material is used by permission of a subsidiary of John Wiley & Sons, Inc. |
||