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