Supplemental Data

Files in this Data Supplement:

• Supplemental Figure 1 - Confocal images of the dark-grown seedlings stained with antibodies for SPR1. (A) to (C) 3-day-old (A), 4-day-old (B), and 5-day-old (C) wild-type Col seedlings. (D) 4-day-old spr1-2 seedling. Arrows and triangles point to the positions of shoot apical meristems and hypocotyl/root junctions, respectively. Brackets in (B) and (C) indicate regions with strong immunofluorescent signal. Note that hypocotyl regions rich in small cells (as in [A]) are seen brighter due to autofluorescence from the cell walls. Bars = 1 mm.