<br>叶表皮的细胞生物学：命运规范、形态发生和协调,The Plant Cell

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叶表皮的细胞生物学：命运规范、形态发生和协调
The Plant Cell ( IF 10.0 ) Pub Date : 2021-10-07 , DOI: 10.1093/plcell/koab250
Daniel T Zuch ₁ , Siamsa M Doyle ₂ , Mateusz Majda ₃ , Richard S Smith ₃ , Stéphanie Robert ₂ , Keiko U Torii ₁

Affiliation

作为植物的最外层，表皮是植物与环境之间的关键界面。在叶子发育过程中，特殊表皮细胞类型（包括气孔保卫细胞、路面细胞和毛状体）的分化同时发生，每种细胞都为植物生长和生存提供独特且关键的功能。数十年的分子遗传学和生理学研究已经揭示了表皮分化的关键因素和激素信号传导。然而，大多数研究一次只关注一种细胞类型，并且这些不同的细胞类型如何作为一个单元进行协调还远未得到充分理解。在这里，我们对支持这些特殊细胞类型的命运规范、分化、形态发生和定位的调控机制的当前知识进行了回顾。重点是它们共同的发育起源、命运灵活性以及细胞周期和激素控制。此外，我们讨论了计算建模方法，以整合单个表皮细胞类型的机械特性和整个组织/器官特性如何相互影响。我们希望阐明协调细胞分化的潜在机制，最终产生功能性叶表皮。

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Cell biology of the leaf epidermis: Fate specification, morphogenesis, and coordination

As the outermost layer of plants, the epidermis serves as a critical interface between plants and the environment. During leaf development, the differentiation of specialized epidermal cell types, including stomatal guard cells, pavement cells, and trichomes, occurs simultaneously, each providing unique and pivotal functions for plant growth and survival. Decades of molecular-genetic and physiological studies have unraveled key players and hormone signaling specifying epidermal differentiation. However, most studies focus on only one cell type at a time, and how these distinct cell types coordinate as a unit is far from well-comprehended. Here we provide a review on the current knowledge of regulatory mechanisms underpinning the fate specification, differentiation, morphogenesis, and positioning of these specialized cell types. Emphasis is given to their shared developmental origins, fate flexibility, as well as cell cycle and hormonal controls. Furthermore, we discuss computational modeling approaches to integrate how mechanical properties of individual epidermal cell types and entire tissue/organ properties mutually influence each other. We hope to illuminate the underlying mechanisms coordinating the cell differentiation that ultimately generate a functional leaf epidermis.

更新日期：2021-10-07

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