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  • Title: CLE peptides in vascular development.
    Author: Qiang Y, Wu J, Han H, Wang G.
    Journal: J Integr Plant Biol; 2013 Apr; 55(4):389-94. PubMed ID: 23473393.
    Abstract:
    The plant vascular system consists of two conductive tissues, phloem and xylem. The vascular meristem, namely the (pro-)cambium, is a stem-cell tissue that gives rise to both xylem and phloem. Recent studies have revealed that CLAVATA3/Embryo Surrounding Region-related (CLE) peptides function in establishing the vascular system through interaction with phytohormones. In particular, TDIF/CLE41/CLE44, phloem-derived CLE peptides, promote the proliferation of vascular cambium cells and prevent them from differentiating into xylem by regulating WOX4 expression through the TDR/PXY receptor. In this review article, we outline recent advances on how CLE peptides function in vascular development in concert with phytohormones through mediating cell-cell communication. The perspective of CLE peptide signaling in vascular development is also discussed.
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