spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search    

The fully linked HTML version of this article has now been published.
Development ePress online publication date 6 Jun 2007
doi: 10.1242/dev.006759

This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
dev.006759v1
134/14/2561    most recent
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 Google Scholar
Google Scholar
Right arrow Articles by Vidaurre, D. P.
Right arrow Articles by Berleth, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Vidaurre, D. P.
Right arrow Articles by Berleth, T.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

Research report

AMP1 and MP antagonistically regulate embryo and meristem development in Arabidopsis


Danielle P. Vidaurre, Sara Ploense, Naden T. Krogan, and Thomas Berleth*
* Author for correspondence (e-mail: thomas.berleth{at}utoronto.ca)

AUXIN RESPONSE FACTOR (ARF)-mediated signaling conveys positional information during embryonic and postembryonic organogenesis and mutations in MONOPTEROS (MP/ARF5) result in severe patterning defects during embryonic and postembryonic development. Here we show that MP patterning activity is largely dispensable when the presumptive carboxypeptidase ALTERED MERISTEM PROGRAM 1 (AMP1) is not functional, indicating that MP is primarily necessary to counteract AMP1 activity. Closer inspection of the single and double mutant phenotypes reveals antagonistic influences of both genes on meristematic activities throughout the Arabidopsis life cycle. In the absence of MP activity, cells in apical meristems and along the paths of procambium formation acquire differentiated identities and this is largely dependent on differentiation-promoting AMP1 activity. Positions of antagonistic interaction between MP and AMP1 coincide with MP expression domains within the larger AMP1 expression domain. These observations suggest a model in which auxin-derived positional information through MP carves out meristematic niches by locally overcoming a general differentiation-promoting activity involving AMP1.


Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?


This article has been cited by other articles:


Home page
 Plant Physiol.Home page
B. H. Lee, J.-H. Ko, S. Lee, Y. Lee, J.-H. Pak, and J. H. Kim
The Arabidopsis GRF-INTERACTING FACTOR Gene Family Performs an Overlapping Function in Determining Organ Size as Well as Multiple Developmental Properties
Plant Physiology, October 1, 2009; 151(2): 655 - 668.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
M. G. Sawchuk, T. J. Donner, P. Head, and E. Scarpella
Unique and Overlapping Expression Patterns among Members of Photosynthesis-Associated Nuclear Gene Families in Arabidopsis
Plant Physiology, December 1, 2008; 148(4): 1908 - 1924.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
J.-W. Wang, R. Schwab, B. Czech, E. Mica, and D. Weigel
Dual Effects of miR156-Targeted SPL Genes and CYP78A5/KLUH on Plastochron Length and Organ Size in Arabidopsis thaliana
PLANT CELL, May 1, 2008; 20(5): 1231 - 1243.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
M. Suzuki, S. Latshaw, Y. Sato, A. M. Settles, K. E. Koch, L. C. Hannah, M. Kojima, H. Sakakibara, and D. R. McCarty
The Maize Viviparous8 Locus, Encoding a Putative ALTERED MERISTEM PROGRAM1-Like Peptidase, Regulates Abscisic Acid Accumulation and Coordinates Embryo and Endosperm Development
Plant Physiology, March 1, 2008; 146(3): 1193 - 1206.
[Abstract] [Full Text] [PDF]


© The Company of Biologists Ltd 2007