Texas Journal of Microscopy - Texas Society for Microscopy

Plate 19. Representative SEM showing endosperm cells of Vitis. 1. Freeze fracture showing several endosperm cells with the
remainder of the cytoplasm. Some cells contain large protein bodies or globoids. Within three of the globoids a large calcium
oxalate druse (D) can be seen. Holes in the cytoplasmic matrix represent the position of lipid bodies, common in endosperms
cells. 2-3. Stereo pair showing a fractured druse inside a globoid. Note the individual CaOx crystals and the central “nucleating”
area around which the druse develops. 4. Fractured globoid druse treated with the protein-dissolving enzyme, pronase. Note
that many areas within the nucleating area are now missing. Adapted from Webb and Arnott, 1982.
52 Tex. J. Micros. 38: , 2007