JXB Advance Access published online on April 28, 2003
Journal of Experimental Botany, doi:10.1093/jxb/erg166
© 2003 by Oxford University Press
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1 Institute of Plant Biology, Wroc
* To whom correspondence should be addressed. E-mail: dorotak{at}biol.uni.wroc.pl.
A non-destructive replica method and a 3-D reconstruction algorithm are used to analyse the geometry and expansion of the shoot apex surface. Surface expansion in the central zone of the apex is slow and nearly isotropic while surface expansion in the peripheral zone is more intense and more anisotropic. Within the peripheral zone, the expansion rate, expansion anisotropy, and the direction of maximal expansion vary according to the age of adjacent leaf primordia. For each plastochron, this pattern of expansion is rotated around the apex by the Fibonacci angle. Early leaf primordium development is divided into four stages: bulging, lateral expansion, separation, and bending. These stages differ in their geometry and expansion pattern. At the bulging stage, the site of primordium initiation shows an intensified expansion that is nearly isotropic. The following stages develop sharp meridional gradients of expansion rates and anisotropy. The adaxial primordium boundary inferred from the surface curvature is shifting until the separation stage, when a crease develops between the primordium and the apex dome. The cells forming the crease, i.e. the future leaf axil, expand along the axil and contract across it. Thus they are arrested in this unique position.
© 2003 Society for Experimental Biology
RESEARCH PAPER
Growth and morphogenesis at the vegetative shoot apex of Anagallis arvensis L
aw University, Kanonia 6/8, 50-328 Wrocaw, Poland
2 Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UK
Abstract 
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  D. Kwiatkowska and A.-L. Routier-Kierzkowska Morphogenesis at the inflorescence shoot apex of Anagallis arvensis: surface geometry and growth in comparison with the vegetative shoot J. Exp. Bot., August 1, 2009; 60(12): 3407 - 3418. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 F. Corson, O. Hamant, S. Bohn, J. Traas, A. Boudaoud, and Y. Couder From the Cover: Turning a plant tissue into a living cell froth through isotropic growth PNAS, May 26, 2009; 106(21): 8453 - 8458. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 O. Hamant, M. G. Heisler, H. Jonsson, P. Krupinski, M. Uyttewaal, P. Bokov, F. Corson, P. Sahlin, A. Boudaoud, E. M. Meyerowitz, et al. Developmental Patterning by Mechanical Signals in Arabidopsis Science, December 12, 2008; 322(5908): 1650 - 1655. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 L. Dupuy, J. Mackenzie, T. Rudge, and J. Haseloff A System for Modelling Cell-Cell Interactions during Plant Morphogenesis Ann. Bot., May 1, 2008; 101(8): 1255 - 1265. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Kwiatkowska Flowering and apical meristem growth dynamics J. Exp. Bot., February 5, 2008; (2008) erm290v1. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Barabe, C. Lacroix, and B. Jeune Following the Initiation and Development of Individual Leaf Primordia at the Level of the Shoot Apical Meristem: The Case of Distichous Phyllotaxis in Begonia Ann. Bot., March 1, 2007; 99(3): 555 - 560. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Kwiatkowska Flower primordium formation at the Arabidopsis shoot apex: quantitative analysis of surface geometry and growth J. Exp. Bot., February 1, 2006; 57(3): 571 - 580. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Li, T. Potuschak, A. Colon-Carmona, R. A. Gutierrez, and P. Doerner Arabidopsis TCP20 links regulation of growth and cell division control pathways PNAS, September 6, 2005; 102(36): 12978 - 12983. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. Kwiatkowska Structural integration at the shoot apical meristem: models, measurements, and experiments Am. J. Botany, September 1, 2004; 91(9): 1277 - 1293. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. V. Reddy, M. G. Heisler, D. W. Ehrhardt, and E. M. Meyerowitz Real-time lineage analysis reveals oriented cell divisions associated with morphogenesis at the shoot apex of Arabidopsis thaliana Development, September 1, 2004; 131(17): 4225 - 4237. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. I. Baskin, G. T.S. Beemster, J. E. Judy-March, and F. Marga Disorganization of Cortical Microtubules Stimulates Tangential Expansion and Reduces the Uniformity of Cellulose Microfibril Alignment among Cells in the Root of Arabidopsis Plant Physiology, August 1, 2004; 135(4): 2279 - 2290. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Kwiatkowska Surface growth at the reproductive shoot apex of Arabidopsis thaliana pin-formed 1 and wild type J. Exp. Bot., May 1, 2004; 55(399): 1021 - 1032. [Abstract] [Full Text] [PDF]
|
|