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Plant and Cell Physiology Advance Access originally published online on November 8, 2007
Plant and Cell Physiology 2007 48(12):1821-1825; doi:10.1093/pcp/pcm154
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© The Author 2007. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved.
The online version of this article has been published under an open access model. Users are entitled to use, reproduce, disseminate, or display the open access version of this article for non-commercial purposes provided that: the original authorship is properly and fully attributed; the Journal and the Japanese Society of Plant Physiologists are attributed as the original place of publication with the correct citation details given; if an article is subsequently reproduced or disseminated not in its entirety but only in part or as a derivative work this must be clearly indicated. For commercial re-use, please contact journals.permissions@oxfordjournals.org

Short Communication

Gain-of-Function Phenotypes of Chemically Synthetic CLAVATA3/ESR-Related (CLE) Peptides in Arabidopsis thaliana and Oryza sativa

Atsuko Kinoshita1, Yasukazu Nakamura2, Erika Sasaki3, Junko Kyozuka3, Hiroo Fukuda1 and Shinichiro Sawa1,*

1 University of Tokyo, Graduate School of Science, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
2 Laboratory of Plant Genome Informatics, Kazusa DNA Research Institute, Kisarazu, Chiba, 292-0818 Japan
3 University of Tokyo, Graduate School of Agricultural and Life Sciences, Yayoi 1-1-1, Bunkyo-ku, Tokyo, 113-0033 Japan

*Corresponding author: E-mail, sawa{at}biol.s.u-tokyo.ac.jp; Fax, +81-3-5841-4462.


  Abstract

Using 26 chemically synthetic CLAVATA3/ESR (CLE) peptides, which correspond to the predicted products of the 31 Arabidopsis CLE genes, we investigated the CLE peptide function in Arabidopsis and rice. Treatment with some CLE peptides inhibited root elongation in rice as well as in Arabidopsis. It also reduced the size of the shoot apical meristem in Arabidopsis but not in rice. Database searches revealed 47 putative CLE genes in the rice genome and multiple CLE domains in some CLE genes, indicating diverse CLE function in these plants.

Keywords: Arabidopsis thaliana - CLE peptides - Oryza sativa - Shoot apical meristem

Abbreviations: CLE, CLAVATA3/ESR-related; LRR, leucine-rich repeat; RAM, root apical meristem; SAM, shoot apical meristem; TDIF, tracheary element differentiation inhibitory factor

(Received October 9, 2007; Accepted November 6, 2007)
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