Skip Navigation


Plant and Cell Physiology Advance Access originally published online on July 24, 2005
Plant and Cell Physiology 2005 46(9):1549-1560; doi:10.1093/pcp/pci168
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
46/9/1549    most recent
pci168v1
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 Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (2)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Zhang, X.
Right arrow Articles by Oppenheimer, D. G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Zhang, X.
Right arrow Articles by Oppenheimer, D. G.
Agricola
Right arrow Articles by Zhang, X.
Right arrow Articles by Oppenheimer, D. G.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?


The IRREGULAR TRICHOME BRANCH loci regulate trichome elongation in Arabidopsis

Xiaoguo Zhang, Paris H. Grey, Sujatha Krishnakumar1 and David G. Oppenheimer*

Department of Botany, University of Florida Genetics Institute, and the Plant Molecular and Cellular Biology Program, University of Florida, 220 Bartram Hall, PO Box 118526, Gainesville, FL 32611-8526, USA

* Corresponding author: E-mail, doppen{at}botany.ufl.edu; Fax, +1 352-392-3993.

The proper control of cell expansion is vital to plant development. It is responsible for shaping individual cells and, together with cell division, it plays a lead role in shaping plant organs. Much of the underlying mechanism by which plant cells expand anisotropically is not understood. We are taking a genetic approach to cell expansion by isolating mutants that affect the branching pattern of Arabidopsis trichomes. Here we report the identification of four new loci that control trichome morphogenesis. These loci were named the IRREGULAR TRICHOME BRANCH (ITB) loci because of the deleterious effects on branch position and length in the mutants. Our analysis of branch expansion in itb mutants shows that the ITB genes act as positive regulators of branch elongation, and that the branch position defects are caused by altered expansion of the trichome stalk. The itb mutations display synergistic effects in double mutant combinations with certain branch number mutations, suggesting that the ITB genes also play key roles in branch initiation. These results demonstrate that the ITB genes are key regulators of anisotropic cell expansion in trichomes.

1 Present address: DNA Variation Group, Stanford Genome Technology Center, 855 California Ave, Stanford, CA 94305-8307, USA.

(Received January 6, 2005; Accepted July 10, 2005)
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
 J Exp BotHome page
S. Guimil and C. Dunand
Cell growth and differentiation in Arabidopsis epidermal cells
J. Exp. Bot., November 1, 2007; 58(14): 3829 - 3840.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
J. F. Uhrig, M. Mutondo, I. Zimmermann, M. J. Deeks, L. M. Machesky, P. Thomas, S. Uhrig, C. Rambke, P. J. Hussey, and M. Hulskamp
The role of Arabidopsis SCAR genes in ARP2-ARP3-dependent cell morphogenesis
Development, March 1, 2007; 134(5): 967 - 977.
[Abstract] [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.