Figure 4.

sgr1/scr and sgr7/shr inflorescence stems lack an endodermal layer. Left and middle: Schematic model of longitudinal section of inflorescence stem, as defined in figure 1B legend. Generally, wild-type inflorescence stem has one layer of epidermis, three layers of cortex, and one layer of endodermis (middle, and figure 1B). In contrast, inflorescence stems of sgr1/scr and sgr7/shr lack the endodermis (right).