|
|
|
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
First published online 12 September 2007
doi: 10.1242/dev.011510
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Section of Cell and Developmental Biology, University of California San Diego, La Jolla, CA 92093, USA.
* Author for correspondence (e-mail: marty{at}ucsd.edu)
Accepted 2 August 2007
Successful fertilization in plants requires the properly coordinated development of female reproductive tissues, including stigma, style, septum and transmitting tract. We have identified three closely related genes, HECATE1 (HEC1), HECATE2 (HEC2) and HECATE3 (HEC3), the expression domains of which encompass these regions of the Arabidopsis gynoecium. The HEC genes encode putative basic helix-loop-helix (bHLH) transcription factors with overlapping functionality. Depending on the amount of HEC function missing, plants exhibit varying degrees of infertility, defects in septum, transmitting tract and stigma development and impaired pollen tube growth. The observed phenotypes are similar to those reported for mutations in the SPATULA (SPT) gene, which also encodes a bHLH transcription factor required for development of the same female tissues. We show that the HEC proteins can dimerize with SPT in a yeast two-hybrid system, indicating that the HEC genes work in concert with SPT to coordinately regulate development of the female reproductive tract. Furthermore, when the HEC genes are ectopically expressed from the CaMV 35S promoter, some of the resulting transgenic plants show pin-shaped inflorescences, suggesting that the HEC genes are probably involved in auxin-mediated control of gynoecium patterning.
Key words: Arabidopsis, Development, Stigma, Transmitting tract, Pollen tube growth
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati 
Twitter What's this?
This article has been cited by other articles:
|
|
 |
|
  D. J. Lee, J. W. Park, H. W. Lee, and J. Kim Genome-wide analysis of the auxin-responsive transcriptome downstream of iaa1 and its expression analysis reveal the diversity and complexity of auxin-regulated gene expression J. Exp. Bot., September 1, 2009; 60(13): 3935 - 3957. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. P. Alvarez, A. Goldshmidt, I. Efroni, J. L. Bowman, and Y. Eshed The NGATHA Distal Organ Development Genes Are Essential for Style Specification in Arabidopsis PLANT CELL, May 1, 2009; 21(5): 1373 - 1393. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Trigueros, M. Navarrete-Gomez, S. Sato, S. K. Christensen, S. Pelaz, D. Weigel, M. F. Yanofsky, and C. Ferrandiz The NGATHA Genes Direct Style Development in the Arabidopsis Gynoecium PLANT CELL, May 1, 2009; 21(5): 1394 - 1409. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. C. Quiapim, M. S. Brito, L. A.S. Bernardes, I. daSilva, I. Malavazi, H. C. DePaoli, J. B. Molfetta-Machado, S. Giuliatti, G. H. Goldman, and M. H. S. Goldman Analysis of the Nicotiana tabacum Stigma/Style Transcriptome Reveals Gene Expression Differences between Wet and Dry Stigma Species Plant Physiology, March 1, 2009; 149(3): 1211 - 1230. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Ogawa, P. Kay, S. Wilson, and S. M. Swain ARABIDOPSIS DEHISCENCE ZONE POLYGALACTURONASE1 (ADPG1), ADPG2, and QUARTET2 Are Polygalacturonases Required for Cell Separation during Reproductive Development in Arabidopsis PLANT CELL, January 1, 2009; 21(1): 216 - 233. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Compiled by, F. Tooke, T. Chiurugwi, and N. Battey Flowering Newsletter bibliography for 2007 J. Exp. Bot., July 18, 2008; (2008) ern109v1. [Full Text] [PDF]
|
|
