Plant Physiol. Tips for Better Browsing
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on March 20, 2003; 10.1104/pp.102.018069

This Article
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow All Versions of this Article:
131/4/1903    most recent
pp.102.018069v1
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 Web of Science
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 Web of Science (12)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Garcia, D.
Right arrow Articles by Berger, F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Garcia, D.
Right arrow Articles by Berger, F.
Agricola
Right arrow Articles by Garcia, D.
Right arrow Articles by Berger, F.

Received December 8, 2002
Returned for revision January 3, 2003
Accepted January 13, 2003

Arabidopsis haiku Mutants Reveal New Controls of Seed Size by Endosperm

Damien Garcia , Virginie Saingery , Pierre Chambrier , Ulrike Mayer , Gerd Jürgens , and Frédéric Berger *

European Molecular Biology Organization (EMBO) YIP team, Unité Mixte de Recherche 5667, Ecole Normal Supérieure de Lyon, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Université Lyon I, 46 Allée d'Italie, F-69364 Lyon cedex 07, France (D.G., V.S., P.C., F.B.); and Entwicklungsgenetik, Zentrum für Molebula biologie der Pflanzen, Center of Plant Molecular Biology, Universität Tübingen, Auf der Morgenstelle 3, D-72076 Tübingen, Germany (U.M., G.J.)

* Corresponding author; email: frederic.berger{at}ens-lyon.fr.

In flowering plants, maternal seed integument encloses the embryo and the endosperm, which are both derived from double fertilization. Although the development of these three components must be coordinated, we have limited knowledge of mechanisms involved in such coordination. The endosperm may play a central role in these mechanisms as epigenetic modifications of endosperm development, via imbalance of dosage between maternal and paternal genomes, affecting both the embryo and the integument. To identify targets of such epigenetic controls, we designed a genetic screen in Arabidopsis for mutants that phenocopy the effects of dosage imbalance in the endosperm. The two mutants haiku 1 and haiku 2 produce seed of reduced size that resemble seed with maternal excess in the maternal/paternal dosage. Homozygous haiku seed develop into plants indistinguishable from wild type. Each mutation is sporophytic recessive, and double-mutant analysis suggests that both mutations affect the same genetic pathway. The endosperm of haiku mutants shows a premature arrest of increase in size that causes precocious cellularization of the syncytial endosperm. Reduction of seed size in haiku results from coordinated reduction of endosperm size, embryo proliferation, and cell elongation of the maternally derived integument. We present further evidence for a control of integument development mediated by endosperm-derived signals.




This article has been cited by other articles:


Home page
 GeneticsHome page
J. I. Mena-Ali and A. G. Stephenson
Segregation Analyses of Partial Self-Incompatibility in Self and Cross Progeny of Solanum carolinense Reveal a Leaky S-Allele
Genetics, September 1, 2007; 177(1): 501 - 510.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
S. Vilanova, M. L. Badenes, L. Burgos, J. Martinez-Calvo, G. Llacer, and C. Romero
Self-Compatibility of Two Apricot Selections Is Associated with Two Pollen-Part Mutations of Different Nature
Plant Physiology, October 1, 2006; 142(2): 629 - 641.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
X. Qin, B. Liu, J. Soulard, D. Morse, and M. Cappadocia
Style-by-style analysis of two sporadic self-compatible Solanum chacoense lines supports a primary role for S-RNases in determining pollen rejection thresholds
J. Exp. Bot., June 1, 2006; 57(9): 2001 - 2013.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2003 by the American Society of Plant Biologists