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Título : Geometric analysis of Arabidopsis root apex reveals a new aspect of the ethylene signal transduction pathway in development
Autor : Cervantes, Emilio ; Tocino, Ángel
Palabras clave : Arabidopsis
Bézier curve
Root apex
Fecha de publicación : 13-mar-2005
Editor: Elsevier
Citación : Journal of Plant Physiology 162(9): 1038-1045 (2005)
Resumen: Structurally, ethylene is the simplest phytohormone and regulates multiple aspects of plant growth and development. Its effects are mediated by a signal transduction cascade involving receptors, MAP kinases and transcription factors. Many morphological effects of ethylene in plant development, including root size, have been previously described. In this article a combined geometric and algebraic approach has been used to analyse the shape and the curvature in the root apex of Arabidopsis seedlings. The process requires the fitting of Bézier curves that reproduce the root apex shape, and the calculation of the corresponding curvatures. The application of the method has allowed us to identify significant differences in the root curvatures of ethylene insensitive mutants (ein2-1 and etr1-1) with respect to the wild-type Columbia.
Descripción : 8 pages, 4 figures.-- PMID: 16173465 [PubMed].-- Printed version published on Sep 14, 2005.
Versión del editor: http://dx.doi.org/10.1016/j.jplph.2004.10.013
URI : http://hdl.handle.net/10261/5949
DOI: 10.1016/j.jplph.2004.10.013
ISSN: 0176-1617
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