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Sci. Signal., 9 December 2008
Vol. 1, Issue 49, p. pe53
[DOI: 10.1126/scisignal.149pe53]


Intercellular Peptide Signals Regulate Plant Meristematic Cell Fate Decisions

Julie E. Gray1*, Stuart Casson2, and Lee Hunt1

1 Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK.
2 School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, UK.

Abstract: Plant stem cells secrete peptides that, after processing to release the active form, prevent neighboring cells from adopting a stem cell fate by activating a leucine-rich repeat (LRR) receptor–mediated pathway. Other plant meristematic cell fate decisions, such as those made during the patterning of veins and stomata, also appear to be controlled by similar LRR receptor pathways that are activated by secreted peptide signals. It is therefore probable that peptide ligands regulate meristematic activity in many plant developmental processes.

* Corresponding author. E-mail, j.e.gray{at}

Citation: J. E. Gray, S. Casson, L. Hunt, Intercellular Peptide Signals Regulate Plant Meristematic Cell Fate Decisions. Sci. Signal. 1, pe53 (2008).

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