Light and electron microscopy immunolocalization
of VLXA, VLXB, and VLXC in 3-week-old soybean pod walls. Note the
accumulation of these isoforms in a single cell layer, which confirms
the observations seen in Figure 4. Sections were developed using
affinity-purified antipeptide antisera for VLXA, VLXB, and VLXC. VLXA,
VLXB, and VLXC colocalized to a distinct cell layer in the middle
region of the mesocarp. Sections taken from regions III and IV (refer
to Fig. 3B) illustrate this cellular localization. A through C,
Sections taken from mesocarp region III stained with antisera against
VLXA, VLXB, and VLXC, respectively. D through F, Sections taken from
mesocarp region IV stained with antisera against VLXA, VLXB, and VLXC,
respectively. Scale bar = 50 μm (A–F). G through I, TEM showing
subcellular localization of VLXA, VLXB, and VLXC (respectively) in the
cytosol of these cells. Scale bar = 500 nm (G–I). C, Cytoplasm;
CW, cell walls; M, mitochondria; V, vacuole.