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Solving the Puzzle of Shape Regulation in Plant Epidermal Pavement Cells
Annual Review of Plant Biology ( IF 21.3 ) Pub Date : 2021-06-18 , DOI: 10.1146/annurev-arplant-080720-081920
Sijia Liu 1 , François Jobert 1 , Zahra Rahneshan 1 , Siamsa M Doyle 1 , Stéphanie Robert 1
Affiliation  

The plant epidermis serves many essential functions, including interactions with the environment, protection, mechanical strength, and regulation of tissue and organ growth. To achieve these functions, specialized epidermal cells develop into particular shapes. These include the intriguing interdigitated jigsaw puzzle shape of cotyledon and leaf pavement cells seen in many species, the precise functions of which remain rather obscure. Although pavement cell shape regulation is complex and still a long way from being fully understood, the roles of the cell wall, mechanical stresses, cytoskeleton, cytoskeletal regulatory proteins, and phytohormones are becoming clearer. Here, we provide a review of this current knowledge of pavement cell morphogenesis, generated from a wealth of experimental evidence and assisted by computational modeling approaches. We also discuss the evolution and potential functions of pavement cell interdigitation. Throughout the review, we highlight some of the thought-provoking controversies and creative theories surrounding the formation of the curious puzzle shape of these cells.

中文翻译:


解开植物表皮铺面细胞形状调控之谜

植物表皮具有许多基本功能,包括与环境的相互作用、保护、机械强度以及组织和器官生长的调节。为了实现这些功能,特化的表皮细胞发育成特定的形状。这些包括在许多物种中看到的有趣的子叶和叶铺面细胞的交错拼图形状,其确切功能仍然相当模糊。尽管路面细胞形状调节很复杂,而且距离完全理解还有很长的路要走,但细胞壁、机械应力、细胞骨架、细胞骨架调节蛋白和植物激素的作用正变得越来越清晰。在这里,我们回顾了目前关于路面细胞形态发生的知识,这些知识是从大量实验证据中产生的,并在计算建模方法的帮助下进行。我们还讨论了路面单元交叉的演变和潜在功能。在整个审查过程中,我们重点介绍了围绕这些细胞奇怪的拼图形状的形成的一些发人深省的争议和创造性理论。

更新日期:2021-06-19
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