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Updated: Feb 12, 2026

Lateral Root Inducible System in Arabidopsis and Maize
Published on: January 14, 2016
CEP peptide hormones: key players in orchestrating nitrogen-demand signalling, root nodulation, and lateral root
Michael Taleski1, Nijat Imin1, Michael A Djordjevic1
1Division of Plant Sciences, Research School of Biology, ANU College of Science, Australian National University, Canberra ACT, Australia.
Abstract:
Secreted peptide hormones play pivotal roles in plant growth and development. So far, CEPs (C-TERMINALLY ENCODED PEPTIDEs) have been shown to act through CEP receptors (CEPRs) to control nitrogen (N)-demand signalling, nodulation, and lateral root development. Secreted CEP peptides can enter the xylem stream to act as long-distance signals, but evidence also exists for CEPs acting in local circuits. Recently, CEP peptide species varying in sequence, length, and post-translational modifications have been identified. A more comprehensive understanding of CEP biology requires insight into the in planta function of CEP genes, CEP peptide biogenesis, the components of CEP signalling cascades and, finally, how CEP peptide length, amino-acid composition, and post-translational modifications affect biological activity. In this review, we highlight recent studies that have advanced our understanding in these key areas and discuss some future directions.
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