Fig. 3.

Cellular details of vascular tissues in hypocotyls treated with CLE peptides. Hypocotyls were sectioned directly above the collet and stained with ruthenium red. Seedlings were transferred 3 dag and grown for 15 days in liquid medium supplemented with (A) no peptide, (B) CLE6p, (C) CLE6p and CLE41p, and (D) CLE41p (n = 10). (A, B, and D) Black arrows indicate phloem poles. Initial concentration of each added peptide was 10 μM. (Scale bars, 50 μM.)