Figure 4.

TEM micrographs of a cytokinetic fra2 root cell at central longitudinal section. (a) Lower magnification view of the whole cell. The daughter nuclei (N) exhibit telophase morphology with condensed chromatin. (b–d) Higher magnification images of the corresponding areas, defined by rectangles in (a). Numerous phragmoplast microtubules (arrowheads) appear bending towards the nucleus, some of which extending up to the nuclear surface (b,c). The cell plate (defined by arrows in (a)) consists of numerous unaligned vesicles (arrows in (b); compare with the aligned cell plate vesicles in the wild-type in Figure 1). CW, cell wall. Bars: (a), 5 μm; (b–d), 200 nm.