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Plant function and evolutionary biology
REVIEW

Review on shape formation in epidermal pavement cells of the Arabidopsis leaf

Eveline Jacques A B , Jean-Pierre Verbelen A and Kris Vissenberg A C
+ Author Affiliations
- Author Affiliations

A Department of Biology, Plant Growth and Development, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.

B Present address: Department of Plant Systems Biology, VIB-Ghent University, Technologiepark 927, 9052 Ghent, Belgium.

C Corresponding author. Email: kris.vissenberg@uantwerp.be

Functional Plant Biology 41(9) 914-921 https://doi.org/10.1071/FP13338
Submitted: 22 November 2013  Accepted: 22 April 2014   Published: 10 June 2014

Abstract

Epidermal pavement cells appear with a fascinating irregular wavy shape in the Arabidopsis thaliana leaf. This review addresses the questions of why this particular shape is produced during leaf development and how this is accomplished. To answer the first question most probably waviness offers some biomechanical benefits over other organisations. Different positions of lobe-formation are therefore explored and discussed. At the moment, however, no hard evidence that favours any one morphology is available. The latter question comprises the biomechanical accomplishment of shape and refers to the cell wall and cytoskeletal involvement herein. A current model for pavement cell development is discussed but remaining questions and pitfalls are put forward. Moreover, an overview of the genetic and biochemical regulatory pathways that are described up to date in the literature is presented.

Additional keywords: Arabidopsis thaliana, cell shape formation, cell wall, cytoskeleton, leaf development, pavement cell.


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