Fig. 4. TEM of glo1-1 endosperms. (A) Endoplasmic reticulum (er) is regularly associated with cell walls (cw) in the wild-type. (B-F) glo1-1 endosperms. (B) Cell walls are often thickened and incomplete in glo1-1. (C) Cell wall stub located in central cytoplasm (cy). (D) Cell with three nuclei (n). (E) Poor cell-cell adhesion (arrow) and multivesicular bodies (mvb). (F) Disrupted starchy endosperm (se) with an aleurone-like cell (al) adjacent to the lacuna (l). Scale bars: 200 nm in A-C,E; 1 µm in D; 10 µm in F.

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