CEP5 and XIP1/CEPR1 regulate lateral root initiation in Arabidopsis

Roberts, Ianto; Smith, Stephanie; Stes, Elisabeth; De Rybel, Bert; Staes, An; van de Cotte, Brigitte; Njo, Maria Fransiska; Dedeyne, Lise; Demol, Hans; Lavenus, Julien; Audenaert, Dominique; Gevaert, Kris; Beeckman, Tom; De Smet, Ive (2016). CEP5 and XIP1/CEPR1 regulate lateral root initiation in Arabidopsis. Journal of Experimental Botany, 67(16), pp. 4889-4899. Oxford University Press 10.1093/jxb/erw231

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Roots explore the soil for water and nutrients through the continuous production of lateral roots. Lateral roots are formed at regular distances in a steadily elongating organ, but how future sites for lateral root formation become established is not yet understood. Here, we identified C-TERMINALLY ENCODED PEPTIDE 5 (CEP5) as a novel, auxin-repressed and phloem pole-expressed signal assisting in the formation of lateral roots. In addition, based on genetic and expression data, we found evidence for the involvement of its proposed receptor, XYLEM INTERMIXED WITH PHLOEM 1 (XIP1)/CEP RECEPTOR 1 (CEPR1), during the process of lateral root initiation. In conclusion, we report here on the existence of a peptide ligand−receptor kinase interaction that impacts lateral root initiation. Our results represent an important step towards the understanding of the cellular communication implicated in the early phases of lateral root formation.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant Development
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Lavenus, Julien

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0022-0957

Publisher:

Oxford University Press

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

16 Nov 2016 13:45

Last Modified:

16 Nov 2016 13:45

Publisher DOI:

10.1093/jxb/erw231

PubMed ID:

27296247

Uncontrolled Keywords:

Arabidopsis, CEP5, lateral root initiation, post-translationally modified peptide, receptor kinase, XIP1

BORIS DOI:

10.7892/boris.90027

URI:

https://boris.unibe.ch/id/eprint/90027

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