Recent Advances in Arabidopsis CLE Peptide Signaling
2020
Fletcher, Jennifer C.
Like communities of people, communities of cells must continuously communicate to thrive. Polypeptide signaling molecules that act as mobile ligands are widely used by eukaryotic organisms to transmit information between cells to coordinate developmental processes and responses to environmental cues. In plants, the CLAVATA3/EMBRYO SURROUNDING REGION-RELATED (CLE) genes encode a large family of extracellular signaling peptides that stimulate receptor-mediated signal transduction cascades to modulate diverse developmental and physiological processes. This review highlights the emerging roles of Arabidopsisthaliana CLE peptide signaling pathways in shoot stem cell homeostasis and root xylem development, as well as in root protophloem cell differentiation, vascular cambium activity, and stomatal formation and closure.
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