Cell polarity, auxin transport, and cytoskeleton-mediated division planes: who comes first?
Cell polarity, auxin transport, and cytoskeleton-mediated division planes: who comes first?
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DOI：
10.1007/s00709-005-0104-8
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发表时间：
2005-10-01
期刊：
影响因子：
2.9
通讯作者：
Friml, J
中科院分区：
文献类型：
--
作者：
Dhonukshe, P;Kleine-Vehn, J;Friml, J
在植物中，细胞极性是一个比其他系统更常见的问题，因为植物由于其适应性和灵活的发育，经常根据环境的内在线索和需求在胚胎后改变细胞极性。关于植物信号分子生长素定向运动的最新发现提供了个体细胞极性与组织、器官和全植物水平极性建立之间的独特联系。关于 PIN 生长素运输组件的亚细胞极性靶向的决定决定了细胞之间生长素流动的方向，从而介导多个发育事件。此外，基于 PIN 的生长素运输的突变或化学干扰会导致细胞分裂异常。因此，细胞极性建立、生长素运输、细胞骨架和定向细胞分裂之间的复杂联系现在开始显现。在这里，我们回顾了有关植物和动物细胞极性问题的现有文献，以扩展我们对植物细胞极性的产生、维持和传递的理解。
In plants, cell polarity is an issue more recurring than in other systems, because plants, due to their adaptive and flexible development, often change cell polarity postembryonically according to intrinsic cues and demands of the environment. Recent findings on the directional movement of the plant signalling molecule auxin provide a unique connection between individual cell polarity and the establishment of polarity at the tissue, organ, and whole-plant levels. Decisions about the subcellular polar targeting of PIN auxin transport components determine the direction of auxin flow between cells and consequently mediate multiple developmental events. In addition, mutations or chemical interference with PIN-based auxin transport result in abnormal cell divisions. Thus, the complicated links between cell polarity establishment, auxin transport, cytoskeleton, and oriented cell divisions now begin to emerge. Here we review the available literature on the issues of cell polarity in both plants and animals to extend our understanding on the generation, maintenance, and transmission of cell polarity in plants.