Receptor Kinases in Plant Meristem Development
Meristems are groups of cells that promote shoot and root growth, including the growth of new organs, and control vascular development throughout the life of a higher plant. Their continuous proliferation has to be coordinated with the growth requirements of the plant. Signalling systems that facilitate the intercellular communication in meristems have evolved to include the secretion of small signalling peptides, which are perceived by a set of corresponding receptor kinases. Studies on vascular, shoot and root meristems have uncovered surprising similarities and shared functions among these signalling components. One common feature of these meristems is their use of CLE peptides to signal, often via redundantly acting RLKs, to regulate the expression of homeodomain transcription factors. These peptide/RLK/homeodomain transcription factor modules control the proliferation and maintenance of stem cells in these meristems.
KeywordsRoot Meristem Floral Meristem Shoot Meristem Stem Cell Maintenance Columella Cell
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