Plant Cell
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Cell Advance Online Publication
Published on February 28, 2007; 10.1105/tpc.106.049221

OPEN ACCESS ARTICLE
This Article
Free via Open Access: OA
Right arrow Full Text - TPC Advance Online Pub. (PDF)
Right arrow Supplemental Data
Right arrowOA All Versions of this Article:
19/2/433    most recent
tpc.106.049221v1
Right arrow Alert me when this article is cited
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 Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Liu, Y.
Right arrow Articles by Soppe, W. J.J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Liu, Y.
Right arrow Articles by Soppe, W. J.J.
Agricola
Right arrow Articles by Liu, Y.
Right arrow Articles by Soppe, W. J.J.

Received November 28, 2006
Returned for revision January 19, 2007
Accepted February 6, 2007

The Absence of Histone H2B Monoubiquitination in the Arabidopsis hub1 (rdo4) Mutant Reveals a Role for Chromatin Remodeling in Seed Dormancy

Yongxiu Liu 1, Maarten Koornneef 2, and Wim J.J. Soppe 1*

1 Department of Plant Breeding and Genetics, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany
2 Department of Plant Breeding and Genetics, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany; Laboratory of Genetics, Wageningen University, 6703 BD Wageningen, The Netherlands

* To whom correspondence should be addressed. E-mail: soppe{at}mpiz-koeln.mpg.de.

Seed dormancy is defined as the failure of a viable seed to germinate under favorable conditions. Besides playing an adaptive role in nature by optimizing germination to the most suitable time, a tight control of dormancy is important in crop plants. Extensive genetic and physiological studies have identified the involvement of several factors, but the molecular mechanisms underlying this process are still largely unknown. We cloned the HISTONE MONOUBIQUITINATION1 (HUB1) gene, of which the mutant (previously identified as reduced dormancy4) has reduced seed dormancy and several pleiotropic phenotypes. HUB1 encodes a C3HC4 RING finger protein. The Arabidopsis thaliana genome contains one HUB1 homolog, which we named HUB2. The hub2 mutant also has reduced seed dormancy and is not redundant with hub1. Homologs of HUB1 and HUB2 in other species are required for histone H2B monoubiquitination. In agreement with this, the ubiquitinated form of histone H2B could not be detected in the hub1 and hub2 mutants. In yeast and human cells, histone H2B monoubiquitination is associated with actively transcribed genes. The hub1 mutant showed altered expression levels for several dormancy-related genes. We propose a role for chromatin remodeling in seed dormancy by H2B monoubiquitination through HUB1 and HUB2.




This article has been cited by other articles:


Home page
 Plant Physiol.Home page
J. Thiel, D. Weier, N. Sreenivasulu, M. Strickert, N. Weichert, M. Melzer, T. Czauderna, U. Wobus, H. Weber, and W. Weschke
Different Hormonal Regulation of Cellular Differentiation and Function in Nucellar Projection and Endosperm Transfer Cells: A Microdissection-Based Transcriptome Study of Young Barley Grains
Plant Physiology, November 1, 2008; 148(3): 1436 - 1452.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
N. A. Eckardt
Two Tales of Chromatin Remodeling Converge on HUB1
PLANT CELL, February 1, 2007; 19(2): 391 - 393.
[Full Text] [PDF]

Home page
 Plant CellHome page
D. Fleury, K. Himanen, G. Cnops, H. Nelissen, T. M. Boccardi, S. Maere, G. T.S. Beemster, P. Neyt, S. Anami, P. Robles, et al.
The Arabidopsis thaliana Homolog of Yeast BRE1 Has a Function in Cell Cycle Regulation during Early Leaf and Root Growth
PLANT CELL, February 1, 2007; 19(2): 417 - 432.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications THE PLANT CELL PLANT PHYSIOLOGY
Copyright © 2007 by the American Society of Plant Biologists