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Lateral Root Inducible System in Arabidopsis and Maize
Published on: January 14, 2016
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CEP5 and XIP1/CEPR1 regulate lateral root initiation in Arabidopsis
Ianto Roberts1, Stephanie Smith2, Elisabeth Stes3
1Department of Plant Systems Biology, VIB, B-9052 Ghent, Belgium Department of Plant Biotechnology and Genetics, Ghent University, B-9052 Ghent, Belgium.
Journal of Experimental Botany
|June 15, 2016
Summary
Scientists discovered a new peptide signal, C-TERMINALLY ENCODED PEPTIDE 5 (CEP5), that helps plants form lateral roots. This peptide interacts with a receptor, influencing root development and nutrient uptake.
Area of Science:
- Plant Biology
- Molecular Biology
- Developmental Biology
Background:
- Lateral roots are crucial for plants to acquire water and nutrients from the soil.
- The precise mechanisms establishing sites for lateral root formation in elongating plant organs remain unclear.
Purpose of the Study:
- To identify novel signaling molecules involved in lateral root formation.
- To elucidate the molecular interactions regulating lateral root initiation.
Main Methods:
- Genetic analysis and expression data were used to identify and validate signaling components.
- Investigated the role of C-TERMINALLY ENCODED PEPTIDE 5 (CEP5) and its receptor.
Main Results:
- C-TERMINALLY ENCODED PEPTIDE 5 (CEP5), an auxin-repressed and phloem pole-expressed peptide, was identified as a key signal.
- Evidence suggests XYLEM INTERMIXED WITH PHLOEM 1 (XIP1)/CEP RECEPTOR 1 (CEPR1) acts as the receptor for CEP5.
- A peptide ligand-receptor kinase interaction was found to impact lateral root initiation.
Conclusions:
- A novel peptide signaling pathway involving CEP5 and XIP1/CEPR1 regulates lateral root initiation.
- This discovery advances the understanding of cellular communication in early lateral root development.
Keywords:
ArabidopsisCEP5XIP1.lateral root initiationpost-translationally modified peptidereceptor kinaseMore Related Videos
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