摘要: This review discusses current knowledge on division plane determination in plant cells and how divisionwithin this is executed during cytokinesis. Plants are unusual among eukaryotes that theirplanes of established prior to the onset mitosis. Factors contribute initialselection include extra-cellular signals, cell geometry polarity, nuclearposition. During G2 phase cycle, formation preprophase band (PPB), a corticalassembly microtubules microfilaments, signals future location plane. Factorsimportant for PPB maturation actin cytoskeleton, changes microtubule dynamics,and protein dephosphorylation. Prior its disassembly at prometaphase, functions more thanone way determine subsequent placement new wall. First, influences initial orientationof spindle, which facilitates wall within Second, thePPB thought direct cortical site persists after breakdownand interacts cytokinesis with expanding phragmoplast, cytoskeletal assembly directsthe deposition partitioning Both negative positive markers implicatedin maintaining memory former throughout mitosis
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