Abstract
CLE (CLAVATA/ESR-related) peptides play crucial roles as cell-cell communication factors in plant morphogenesis by regulating cell proliferation and differentiation. We found that TDIF (Tracheary Element Differentiation Inhibitory Factor), which belongs to the CLE family, inhibits differentiation of procambial cells into xylem vessel cells and promotes proliferation of procambial cells. However, it was still unknown if other CLE peptide(s) may function in vascular development. In this report, we searched the function of CLE peptides and found some other CLE peptides than TDIF caused vein discontinuity in leaf margin. TDIF suppressed the vein discontinuity caused to the peptides. Now efforts are underway to reveal the relationship between the CLE peptides and auxin transport.
