Fig. 2.

Hypocotyl phenotype of wox4 IRX3::CLE41 lines. (A-D) Vascular tissue from 6-week-old hypocotyls. Upper and middle panels show Toluidine Blue-stained thin sections. Upper section is transverse, middle section is longitudinal. Lower panels are Analine Blue-stained hand sections viewed under a UV light. (A) Col wild-type vascular tissue with phloem (ph), cambium (c) and xylem (x) marked. (B) IRX3::CLE41 plants with intercalated xylem and phloem. (C) wox4 plants are organised similarly to wild type. (D) wox4 IRX3::CLE41 lines, organised similarly to IRX3::CLE41 but with smaller spaces between differentiated xylem and phloem. Scale bars: 50 μm (top and middle); 100 μm (bottom).