Figure 3.

Expression of C2 type I MADS-box gene reporter lines during endosperm development. Promoter-GFP activities were analyzed at 11 stages (separated by dashed lines) during endosperm development, including the coenocytic phase (endosperm stages I–VIII) and cellularized phases (endosperm stage IX, early torpedo stage [et], and early bent-cotyledon stage [ebc]). Five distinct expression patterns are represented by AGL46 (A), AGL48 (B), AGL96 (C), PHE2 (D), and AGL91 (E). All seeds are oriented with the micropylar end toward the bottom left. Arrows indicate the position of the chalazal domain at endosperm stage VIII. Bars = 100 µm.