Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences Beijing, China.
Front Plant Sci. 2014 Jun 23;5:297. doi: 10.3389/fpls.2014.00297. eCollection 2014.
Stomata are two-celled valves that control epidermal pores whose opening and spacing optimizes shoot-atmosphere gas exchange. Arabidopsis stomatal formation involves at least one asymmetric division and one symmetric division. Stomatal formation and patterning are regulated by the frequency and placement of asymmetric divisions. This model system has already led to significant advances in developmental biology, such as the regulation of cell fate, division, differentiation, and patterning. Over the last 30 years, stomatal development has been found to be controlled by numerous intrinsic genetic and environmental factors. This mini review focuses on the signaling involved in stomatal initiation and in divisions in the cell lineage.
气孔是控制表皮孔的双细胞阀，其开度和间距优化了芽-大气的气体交换。拟南芥气孔的形成至少涉及一次不对称分裂和一次对称分裂。气孔的形成和模式形成受不对称分裂的频率和位置调节。这个模型系统已经在发育生物学中取得了重大进展，例如细胞命运、分裂、分化和模式形成的调控。在过去的 30 年中，发现气孔发育受许多内在遗传和环境因素的控制。这篇小综述重点介绍了参与气孔起始和细胞谱系分裂的信号转导。
