Serna Laura, Torres-Contreras Javier, Fenoll Carmen
Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, E-45071 Toledo, Spain.
New Phytol. 2002 Mar;153(3):399-404. doi: 10.1046/j.0028-646X.2001.00343.x. Epub 2002 Mar 5.
Stomata are bi-celled epidermal structures distributed in predictable patterns providing plants with pathways for gas exchange with the atmosphere. In Arabidopsis thaliana, stomatal formation is emerging as an elegant and powerful model system to study the genetic and molecular control of cell fate specification and pattern formation in multicellular organisms. In this review, we describe the mechanisms that regulate stomatal distribution in this model plant. The emerging view indicates that cellular interactions play a relevant role during stomatal pattern formation. These cellular interactions are not restricted to a cell layer and signalling within the epidermis, between the epidermis and the underlying tissues and between organs seem to play a relevant role during stomatal formation. Whatever the nature of the different signals, the stomatal pattern must arise as the result of the integration by the epidermal cells of multiple inputs. Uncovering the molecular nature of such signals and understanding the specific role during stomatal development provides a formidable task for the future.
气孔是分布呈可预测模式的双细胞表皮结构，为植物提供与大气进行气体交换的途径。在拟南芥中，气孔形成正成为一个优雅而强大的模型系统，用于研究多细胞生物体中细胞命运决定和模式形成的遗传和分子控制。在本综述中，我们描述了调控这种模式植物中气孔分布的机制。新出现的观点表明，细胞间相互作用在气孔模式形成过程中发挥着重要作用。这些细胞间相互作用并不局限于一个细胞层，表皮内、表皮与下层组织之间以及器官之间的信号传导似乎在气孔形成过程中发挥着重要作用。无论不同信号的性质如何，气孔模式必定是表皮细胞整合多种输入信号的结果。揭示此类信号的分子本质并了解其在气孔发育过程中的具体作用，是未来一项艰巨的任务。
