DNA uptake by Arabidopsis induces changes in the expression of CLE peptides which control root morphology

Paungfoo-Lonhienne, Chanyarat, Lonhienne, Thierry G. A. and Schmidt, Susanne (2010) DNA uptake by Arabidopsis induces changes in the expression of CLE peptides which control root morphology. Plant Signaling & Behavior, 5 9: 1-3. doi:10.4161/psb.5.9.12477


Author Paungfoo-Lonhienne, Chanyarat
Lonhienne, Thierry G. A.
Schmidt, Susanne
Title DNA uptake by Arabidopsis induces changes in the expression of CLE peptides which control root morphology
Journal name Plant Signaling & Behavior   Check publisher's open access policy
ISSN 1559-2316
Publication date 2010-09
Sub-type Article (original research)
DOI 10.4161/psb.5.9.12477
Volume 5
Issue 9
Start page 1
End page 3
Total pages 3
Place of publication United States
Publisher Landes Bioscience
Collection year 2011
Language eng
Abstract The presence of externally supplied DNA in the growth medium enhances growth of lateral roots and root hairs in Arabidopsis. This phenomenon cannot be attributed to phosphorus (P) limitation because it is independent of the plants' P status. Rather, we hypothesized that DNA triggers a currently unknown signaling pathway. Analyzing the transcriptional changes of genes induced by externally supplied DNA, we show that 7 of the 17 studied CLAVATA3/ESRrelated (CLEs) genes were differentially regulated. CLEs are known peptide hormones that affect plant development including root morphology. While previous research had shown that overexpression of these CLE genes alters root morphology, changes in gene expression had not been linked to environmental triggers. The differential expression of these CLEs genes and accompanied changes of the root phenotype are indicative of a DNA-elicited signal pathway which affects root development. We conclude that DNA acts as a signaling compound which induces root proliferation in a way that would enhance the plant's ability to acquire nutrients from soil organic matter. Our study further confirms the importance of CLEs for controlling root morphology in response to specific environmental conditions, and draws attention to a novel role of DNA as a signaling compound. © 2010 Landes Bioscience.
Keyword Arabidopsis
Cles
Dna
Plant signaling
Root morphology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Biological Sciences Publications
 
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Created: Tue, 22 Mar 2011, 14:00:22 EST by Dr Chanyarat Paungfoo-lonhienne on behalf of School of Biological Sciences