Jacques Eveline, Verbelen Jean-Pierre, Vissenberg Kris
Department of Biology, Plant Growth and Development, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
Funct Plant Biol. 2014 Sep;41(9):914-921. doi: 10.1071/FP13338.
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.
拟南芥叶片中的表皮铺板细胞呈现出迷人的不规则波浪状形态。本综述探讨了在叶片发育过程中为何会产生这种特殊形状以及如何实现这一形状的问题。为回答第一个问题，波浪状形态很可能比其他组织形态具有一些生物力学优势。因此，本文探讨并讨论了叶瓣形成的不同位置。然而，目前尚无确凿证据支持任何一种形态。后一个问题涉及形状的生物力学实现，指的是细胞壁和细胞骨架在其中的作用。本文讨论了当前的铺板细胞发育模型，但也提出了尚存的问题和缺陷。此外，还概述了文献中迄今所描述的遗传和生化调控途径。
