Abstract
Previous studies demonstrated that the CLE41/44 (TDIF) peptide plays a critical role in vascular formation: TDIF is secreted from phloem cells and received by TDR-expressing procambial cells, in which TDIF-TDR signaling enhances proliferation of procambial cells and prevents xylem differentiation from procambial cells. CLE42 and CLE46 also possess a CLE motif similar to that of CLE41/44. Although CLE42 has the TDIF activity, CLE46 does not. Thus function of CLE46 is yet poorly understood.
To understand the function of CLE46, we first analyzed promoter activity of CLE46 in pCLE46:GUS transgenic plants. Next, we generated CLE46-overexpressed and RNAi-CLE46-suppressed transgenic plants. Based on these results, we discuss the function of CLE46 peptide.
