Skip Navigation


JXB Advance Access originally published online on February 13, 2004
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
55/397/673    most recent
erh069v1
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (15)
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by Guyomarc’h, S.
Right arrow Articles by Delarue, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Guyomarc’h, S.
Right arrow Articles by Delarue, M.
Agricola
Right arrow Articles by Guyomarc’h, S.
Right arrow Articles by Delarue, M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Journal of Experimental Botany, Vol. 55, No. 397, pp. 673-684, March 1, 2004
© 2004 Oxford University Press

Regulation of Growth, Development and Whole Organism Physiology

MGOUN3, an Arabidopsis gene with TetratricoPeptide-Repeat-related motifs, regulates meristem cellular organization

Received 25 June 2003; Accepted 13 November 2003

Soazig Guyomarc’h1, Teva Vernoux2, Jan Traas2, Dao-Xiu Zhou1 and Marianne Delarue1,*

1 Institut de Biotechnologie des Plantes, CNRS UMR 8618, Bât. 630, Université Paris-Sud, F-91405 Orsay, France
2 Laboratoire de Biologie Cellulaire, INRA, Route de St-Cyr, F-78026 Versailles cedex, France

* To whom correspondence should be addressed. Fax: +33 1 69 15 34 25. E-mail: delarue{at}ibp.u-psud.fr
Abbreviations: FST, flanking sequence tag; LGN, leucine, glycine, asparagine-rich protein; RAM, root apical meristem; SAM, shoot apical meristem; TPR, TetratricoPeptide Repeats.

In order to understand the functioning of apical meristems in Arabidopsis more clearly, a new mutant, mgoun3 (mgo3), affected in the structural organization and the functional regulation of both shoot and root meristems has been isolated. mgo3 plants display perturbations in leaf morphogenesis, in the spatial and the temporal formation of primordia, and frequent fasciation of the inflorescence stem. Cellular analysis showed that both cellular organization and cell identity patterning are impaired in the mutant meristems. The MGO3 gene has been isolated by positional cloning. The protein deduced from the cDNA sequence contains TetratricoPeptide Repeats (TPR) and Leucine-Rich Repeats (LRR), two motifs that are thought to act in protein–protein interactions. This gene appears to be unique in the Arabidopsis genome. Although the MGO3 protein presents TPR as in the Arabidopsis proteins HOBBIT and SPINDLY, the MGO3 motifs are more similar to those present in LGN-related proteins, which are regulators for some of the asymmetric cell divisions in animal development. These features suggest a key role for MGO3 in meristematic cell divisions and would be of interest for the comparison between plant and animal development.

Key words: Arabidopsis, fasciation, meristem, MGOUN3, TPR.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Mol PlantHome page
W.-H. Shen and L. Xu
Chromatin Remodeling in Stem Cell Maintenance in Arabidopsis thaliana
Mol Plant, July 1, 2009; 2(4): 600 - 609.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
C. Xu and B. Huang
Root proteomic responses to heat stress in two Agrostis grass species contrasting in heat tolerance
J. Exp. Bot., November 13, 2008; (2008) ern258v1.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
M. FAMBRINI, E. BONSIGNORI, F. RAPPARINI, G. CIONINI, V. MICHELOTTI, D. BERTINI, R. BARALDI, and C. PUGLIESI
stem fasciated, a Recessive Mutation in Sunflower (Helianthus annuus), Alters Plant Morphology and Auxin Level
Ann. Bot., October 1, 2006; 98(4): 715 - 730.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
S. Guyomarc'h, M. Benhamed, G. Lemonnier, J.-P. Renou, D.-X. Zhou, and M. Delarue
MGOUN3: evidence for chromatin-mediated regulation of FLC expression
J. Exp. Bot., June 1, 2006; 57(9): 2111 - 2119.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
S. Inagaki, T. Suzuki, M.-a. Ohto, H. Urawa, T. Horiuchi, K. Nakamura, and A. Morikami
Arabidopsis TEBICHI, with Helicase and DNA Polymerase Domains, Is Required for Regulated Cell Division and Differentiation in Meristems
PLANT CELL, April 1, 2006; 18(4): 879 - 892.
[Abstract] [Full Text] [PDF]

Home page
 GENES CELLSHome page
T. Ono, H. Kaya, S. Takeda, M. Abe, Y. Ogawa, M. Kato, T. Kakutani, O. M. Scheid, T. Araki, and K.-i. Shibahara
Chromatin assembly factor 1 ensures the stable maintenance of silent chromatin states in Arabidopsis
Genes Cells, February 1, 2006; 11(2): 153 - 162.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
R. Xia, J. Wang, C. Liu, Y. Wang, Y. Wang, J. Zhai, J. Liu, X. Hong, X. Cao, J.-K. Zhu, et al.
ROR1/RPA2A, a Putative Replication Protein A2, Functions in Epigenetic Gene Silencing and in Regulation of Meristem Development in Arabidopsis
PLANT CELL, January 1, 2006; 18(1): 85 - 103.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
T. Suzuki, S. Nakajima, A. Morikami, and K. Nakamura
An Arabidopsis Protein with a Novel Calcium-binding Repeat Sequence Interacts with TONSOKU/MGOUN3/BRUSHY1 Involved in Meristem Maintenance
Plant Cell Physiol., September 1, 2005; 46(9): 1452 - 1461.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
T. Suzuki, S. Nakajima, S. Inagaki, M. Hirano-Nakakita, K. Matsuoka, T. Demura, H. Fukuda, A. Morikami, and K. Nakamura
TONSOKU is Expressed in S Phase of the Cell Cycle and its Defect Delays Cell Cycle Progression in Arabidopsis
Plant Cell Physiol., May 1, 2005; 46(5): 736 - 742.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
C. C. Carles, D. Choffnes-Inada, K. Reville, K. Lertpiriyapong, and J. C. Fletcher
ULTRAPETALA1 encodes a SAND domain putative transcriptional regulator that controls shoot and floral meristem activity in Arabidopsis
Development, March 1, 2005; 132(5): 897 - 911.
[Abstract] [Full Text] [PDF]

Home page
 Genes Dev.Home page
S. Takeda, Z. Tadele, I. Hofmann, A. V. Probst, K. J. Angelis, H. Kaya, T. Araki, T. Mengiste, O. M. Scheid, K.-i. Shibahara, et al.
BRU1, a novel link between responses to DNA damage and epigenetic gene silencing in Arabidopsis
Genes & Dev., April 1, 2004; 18(7): 782 - 793.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.