cell plate การใช้

• In plant cells, a cell plate forms between the two nuclei.
• Once the cell plate reaches and fuses with the plasma membrane the phragmoplast disappears.
• The cell plate initially forms as a disc between the two halves of the phragmoplast structure.
• The building of cell plate and ultimately the new cell wall requires kinesin-like motor proteins.
• The growth of the cell plate eventually disrupts the telophase spindle ( see case 4 in picture ).
• The cell plate grows out centrifugally and eventually develops into a proper cell wall, separating the two nuclei.
• The construction of the new cell wall begins within the lumen of the narrow tubules of the young cell plate.
• The next component to be added is callose, which is polymerized directly at the cell plate by callose synthases.
• This structure directs packets of cell wall materials which coalesce into a disk-shaped structure called a cell plate.
• The microtubules and actin filaments within the phragmoplast serve to guide vesicles with cell wall material to the growing cell plate.
• However, its position marks the future fusion sites for the new cell plate with the existing cell wall during telophase.
• It serves as a scaffold for cell plate assembly and subsequent formation of a new cell wall separating the two daughter cells.
• A " colossal " crane of 60 tons was later built at Keyham, with a cell plate stiffened by four cells.
• If a phragmosome was present in the cell, the phragmoplast and cell plate will grow through the space occupied by the phragmosome.
• During mitosis, the new cell wall is built by the formation of a cell plate starting in the center of the cell.
• Cytokinesis in green algae occurs via a diverse range of mechanisms, including cleavage furrows in some algae and cell plates in others.
• When mitosis is completed, the cell plate and new cell wall form starting from the center along the plane occupied by the phragmosome.
• Nuclear envelopes reform and cleavage or cell plate formation eventually produces a total of four daughter cells, each with a haploid set of chromosomes.
• The first components to arrive are pectins, hemicelluloses, and arabinogalactan proteins carried by the secretory vesicles that fuse to form the cell plate.
• The cell plate grows outwards until it fuses with the cell wall of the dividing cell at exactly the spots predicted by the preprophase band.