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Fig. 2 The different stages of somatic-type plant cytokinesis (see text for further de-
tails).AG2-M stage (premitotic).BLate mitotic anaphase – phragmoplast initials stage
of cytokinesis.CEarly telophase stage of caryokinesis – solid phragmoplast stage of
cytokinesis.DMid telophase stage of caryokinesis – transitional phragmoplast stage of
cytokinesis.ELate telophase stage of caryokinesis – ring phragmoplast stage of cyto-
kinesis.FG1 stage in the newly formed daughter cells. chr: chromosome; cpam: cell
plate assembly matrix; cw: cell wall; db: dumbbell-shaped intermediate; gs: golgi stack;
mt:microtubule;mvb:multivesicularbody;n:nucleus;ne:nuclearenvelope;nu:nucleo-
lus; pd: plasmodesmata; pfs: planar fenestrated sheet cell plate; pgz: peripheral cell plate
growth zone; pm: plasma membrane; ppb: pre-prophase band; tn: tubular network cell
plate; tvn: tubulo-vesicular network cell plate; v: golgi-derived vesicle
(Fig. 2B; Seguí-Simarro et al. 2004). Formation of the initials starts when the
chromosomes reach the pole regions and the nuclear envelope begins to re-
assemble. The largest MT arrays are associated with the solid phragmoplast
stage of cell plate formation (Figs. 2C, 3C). Based on tomographic data, the