Plant Cell Hybrigenics The Protein Interactions Experts
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

First published online August 26, 2005; 10.1105/tpc.105.033415

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Supplemental Data
Right arrow All Versions of this Article:
17/10/2676    most recent
tpc.105.033415v1
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 ISI 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 ISI Web of Science (34)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Wang, H.
Right arrow Articles by Bouzayen, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Wang, H.
Right arrow Articles by Bouzayen, M.
Agricola
Right arrow Articles by Wang, H.
Right arrow Articles by Bouzayen, M.
The Plant Cell 17:2676-2692 (2005)
© 2005 American Society of Plant Biologists

The Tomato Aux/IAA Transcription Factor IAA9 Is Involved in Fruit Development and Leaf Morphogenesis{boxw}

Hua Wanga, Brian Jonesa, Zhengguo Lib, Pierre Frassea, Corinne Delalandea, Farid Regada, Salma Chaabounia, Alain Latchéa, Jean-Claude Pecha and Mondher Bouzayena,1

a Unité Mixte de Recherche 990, Institut National de la Recherche Agronomique/Institut National Polytechnique–Ecole Nationale Supérieure Agronomique Toulouse, Génomique et Biotechnologie des Fruits Pôle de Biotechnologie Végétale, 31326 Castanet-Tolosan Cedex, France
b Genetic Engineering Research Center, Chongqing University, 40030 Chongqing, China

1 To whom correspondence should be addressed. E-mail bouzayen{at}ensat.fr; fax 0033-5-62193573.

Auxin/indole-3-acetic acid (Aux/IAA) proteins are transcriptional regulators that mediate many aspects of plant responses to auxin. While functions of most Aux/IAAs have been defined mainly by gain-of-function mutant alleles in Arabidopsis thaliana, phenotypes associated with loss-of-function mutations have been scarce and subtle. We report here that the downregulation of IAA9, a tomato (Solanum lycopersicum) gene from a distinct subfamily of Aux/IAA genes, results in a pleiotropic phenotype, consistent with its ubiquitous expression pattern. IAA9-inhibited lines have simple leaves instead of wild-type compound leaves, and fruit development is triggered before fertilization, giving rise to parthenocarpy. This indicates that IAA9 is a key mediator of leaf morphogenesis and fruit set. In addition, antisense plants displayed auxin-related growth alterations, including enhanced hypocotyl/stem elongation, increased leaf vascularization, and reduced apical dominance. Auxin dose–response assays revealed that IAA9 downregulated lines were hypersensitive to auxin, although the only early auxin-responsive gene that was found to be upregulated in the antisense lines was IAA3. The activity of the IAA3 promoter was stimulated in the IAA9 antisense genetic background, indicating that IAA9 acts in planta as a transcriptional repressor of auxin signaling. While no mutation in any member of subfamily IV has been reported to date, the phenotypes associated with the downregulation of IAA9 reveal distinct and novel roles for members of the Aux/IAA gene family.




This article has been cited by other articles:


Home page
 Plant Physiol.Home page
M. I. Zanor, S. Osorio, A. Nunes-Nesi, F. Carrari, M. Lohse, B. Usadel, C. Kuhn, W. Bleiss, P. Giavalisco, L. Willmitzer, et al.
RNA Interference of LIN5 in Tomato Confirms Its Role in Controlling Brix Content, Uncovers the Influence of Sugars on the Levels of Fruit Hormones, and Demonstrates the Importance of Sucrose Cleavage for Normal Fruit Development and Fertility
Plant Physiology, July 1, 2009; 150(3): 1204 - 1218.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
M. de Jong, C. Mariani, and W. H. Vriezen
The role of auxin and gibberellin in tomato fruit set
J. Exp. Bot., April 1, 2009; 60(5): 1523 - 1532.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
S. Chaabouni, B. Jones, C. Delalande, H. Wang, Z. Li, I. Mila, P. Frasse, A. Latche, J.-C. Pech, and M. Bouzayen
Sl-IAA3, a tomato Aux/IAA at the crossroads of auxin and ethylene signalling involved in differential growth
J. Exp. Bot., March 1, 2009; 60(4): 1349 - 1362.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
Y. Berger, S. Harpaz-Saad, A. Brand, H. Melnik, N. Sirding, J. P. Alvarez, M. Zinder, A. Samach, Y. Eshed, and N. Ori
The NAC-domain transcription factor GOBLET specifies leaflet boundaries in compound tomato leaves
Development, March 1, 2009; 136(5): 823 - 832.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
B. Molesini, T. Pandolfini, G. L. Rotino, V. Dani, and A. Spena
Aucsia Gene Silencing Causes Parthenocarpic Fruit Development in Tomato
Plant Physiology, January 1, 2009; 149(1): 534 - 548.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
Z. Lin, L. Arciga-Reyes, S. Zhong, L. Alexander, R. Hackett, I. Wilson, and D. Grierson
SlTPR1, a tomato tetratricopeptide repeat protein, interacts with the ethylene receptors NR and LeETR1, modulating ethylene and auxin responses and development
J. Exp. Bot., November 1, 2008; 59(15): 4271 - 4287.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
M. Goetz, L. C. Hooper, S. D. Johnson, J. C. M. Rodrigues, A. Vivian-Smith, and A. M. Koltunow
Expression of Aberrant Forms of AUXIN RESPONSE FACTOR8 Stimulates Parthenocarpy in Arabidopsis and Tomato
Plant Physiology, October 1, 2007; 145(2): 351 - 366.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
E. G.W.M. Schijlen, C.H. R. de Vos, S. Martens, H. H. Jonker, F. M. Rosin, J. W. Molthoff, Y. M. Tikunov, G. C. Angenent, A. J. van Tunen, and A. G. Bovy
RNA Interference Silencing of Chalcone Synthase, the First Step in the Flavonoid Biosynthesis Pathway, Leads to Parthenocarpic Tomato Fruits
Plant Physiology, July 1, 2007; 144(3): 1520 - 1530.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
E. Costantini, L. Landi, O. Silvestroni, T. Pandolfini, A. Spena, and B. Mezzetti
Auxin Synthesis-Encoding Transgene Enhances Grape Fecundity
Plant Physiology, April 1, 2007; 143(4): 1689 - 1694.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
A. Hay, M. Barkoulas, and M. Tsiantis
ASYMMETRIC LEAVES1 and auxin activities converge to repress BREVIPEDICELLUS expression and promote leaf development in Arabidopsis
Development, October 15, 2006; 133(20): 3955 - 3961.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
M. Goetz, A. Vivian-Smith, S. D. Johnson, and A. M. Koltunow
AUXIN RESPONSE FACTOR8 Is a Negative Regulator of Fruit Initiation in Arabidopsis
PLANT CELL, August 1, 2006; 18(8): 1873 - 1886.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
F. Bai and D. A. DeMason
Hormone Interactions and Regulation of Unifoliata, PsPK2, PsPIN1 and LE Gene Expression in Pea (Pisum sativum) Shoot Tips
Plant Cell Physiol., July 1, 2006; 47(7): 935 - 948.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications THE PLANT CELL PLANT PHYSIOLOGY
Copyright © 2005 by the American Society of Plant Biologists