Molecular control of stomatal development.
Molecular control of stomatal development.
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DOI：
10.1042/bcj20170413
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发表时间：
2018-01-31
期刊：
影响因子：
--
通讯作者：
Gray JE
中科院分区：
文献类型：
--
作者：
Zoulias N;Harrison EL;Casson SA;Gray JE
植物已经进化出发育可塑性，当新叶出现时，可以上调或下调光合作用和失水能力。这种发育可塑性使植物能够最大限度地适应并在不同的环境下生存。气孔在这一适应过程中发挥着关键作用。叶子表皮中的这些微孔控制着植物与其周围环境之间的气体交换。气孔发育涉及受调节的细胞命运决定，以确保最佳的气孔密度和间距，从而实现有效的气体交换。细胞模式形成过程受到涉及细胞外配体-受体相互作用的复杂信号通路的调节，这反过来又调节气孔形成所必需的三个主转录因子的活性。在这里，我们回顾了目前对表皮模式因子配体和富含亮氨酸重复受体激酶 ERECTA 家族之间生化相互作用的理解。我们讨论了这如何导致激酶级联的激活、bHLH 转录因子 SPEECHLESS 及其相关因子的调节，并最终改变气孔的产生。
Plants have evolved developmental plasticity which allows the up- or down-regulation of photosynthetic and water loss capacities as new leaves emerge. This developmental plasticity enables plants to maximise fitness and to survive under differing environments. Stomata play a pivotal role in this adaptive process. These microscopic pores in the epidermis of leaves control gas exchange between the plant and its surrounding environment. Stomatal development involves regulated cell fate decisions that ensure optimal stomatal density and spacing, enabling efficient gas exchange. The cellular patterning process is regulated by a complex signalling pathway involving extracellular ligand–receptor interactions, which, in turn, modulate the activity of three master transcription factors essential for the formation of stomata. Here, we review the current understanding of the biochemical interactions between the epidermal patterning factor ligands and the ERECTA family of leucine-rich repeat receptor kinases. We discuss how this leads to activation of a kinase cascade, regulation of the bHLH transcription factor SPEECHLESS and its relatives, and ultimately alters stomatal production.