Skip Navigation



JXB Advance Access published online on May 25, 2006
Journal of Experimental Botany, doi:10.1093/jxb/erj169
This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow Supplementary Material
Right arrow All Versions of this Article:
57/9/2111    most recent
erj169v1
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 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 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?

© The Author [2006]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org
Received September 20, 2005
Accepted February 22, 2006

RESEARCH PAPER

MGOUN3: evidence for chromatin-mediated regulation of FLC expression

Soazig Guyomarc'h 1, Moussa Benhamed 2, Gaëtan Lemonnier 3, Jean-Pierre Renou 3, Dao-Xiu Zhou 2, and Marianne Delarue 2 *

1 Institut de Biotechnologie des Plantes, UMR CNRS 8618, Bât. 630. Université Paris XI, F-91405 Orsay cedex, France; Present address: Institut für Pflanzenwissenschaften, Altenbergrain 21, CH-3013 Bern, Switzerland
2 Institut de Biotechnologie des Plantes, UMR CNRS 8618, Bât. 630. Université Paris XI, F-91405 Orsay cedex, France
3 Unité de Recherche en Génomique Végétale, INRA, 2 rue Gaston Crémieux, F-91057 Evry, France

* To whom correspondence should be addressed.
Marianne Delarue, E-mail: delarue{at}ibp.u-psud.fr


  Abstract

The MGOUN3(MGO3)/BRUSHY1(BRU1)/TONSOKU(TSK) gene of Arabidopsis thaliana encodes a nuclear leucine-glycine-asparagine (LGN) domain protein that may be implicated in chromatin dynamics and genome maintenance. Mutants with defects in MGO3 display a fasciated stem and disorganized meristem structures. The transition to flowering was examined in mgo3 mutants and it was found that, under short days, the mutants flowered significantly earlier than the wild-type plants. Study of flowering-time associated gene expression showed that the floral transition inhibitor gene FLC was under-expressed in the mutant background. Ectopic expression of the flower-specific genes AGAMOUS (AG), PISTILLATA (PI), and SEPALLATA3 (SEP3) in mgo3 vegetative organs was also detected. Western blot and chromatin immunoprecipitation experiments suggested that histone H3 acetylation may be altered in the mgo3 background. Together, these data suggest that MGO3 is required for the correct transition to flowering and that this may be mediated by histone acetylation and associated changes in FLC expression.

Keywords: Arabidopsis thaliana; BRU1; chromatin dynamics; FLC; histone modifications; MGO3; TSK.
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
 Plant Physiol.Home page
M. Shoresh and G. E. Harman
The Molecular Basis of Shoot Responses of Maize Seedlings to Trichoderma harzianum T22 Inoculation of the Root: A Proteomic Approach
Plant Physiology, August 1, 2008; 147(4): 2147 - 2163.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
E. Ramirez-Parra and C. Gutierrez
E2F Regulates FASCIATA1, a Chromatin Assembly Gene Whose Loss Switches on the Endocycle and Activates Gene Expression by Changing the Epigenetic Status
Plant Physiology, May 1, 2007; 144(1): 105 - 120.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
Flowering Newsletter bibliography for 2006
J. Exp. Bot., April 20, 2007; (2007) erm028v2.
[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.