拟南芥根表皮细胞类型模式形成的基因调控网络。
The gene regulatory network for root epidermal cell-type pattern formation in Arabidopsis.
作者信息
Schiefelbein John, Kwak Su-Hwan, Wieckowski Yana, Barron Christa, Bruex Angela
机构信息
Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, 48109, USA.
出版信息
J Exp Bot. 2009;60(5):1515-21. doi: 10.1093/jxb/ern339. Epub 2009 Jan 27.
Abstract
A fundamental aspect of multicellular development is the patterning of distinct cell types in appropriate locations. In this review, the molecular genetic control of cell-type pattern formation in the root epidermis of Arabidopsis thaliana is summarized. This developmental system represents a simple and genetically tractable example of plant cell patterning. The distribution of the two epidermal cell types, root-hair cells and non-hair cells, are generated by a combination of positional signalling and lateral inhibition mechanisms. In addition, recent evidence suggests that reinforcing mechanisms are used to ensure that the initial cell fate choice is adopted in a robust manner.
摘要
多细胞生物发育的一个基本方面是在适当位置形成不同的细胞类型模式。在这篇综述中，总结了拟南芥根表皮细胞类型模式形成的分子遗传控制。这个发育系统代表了植物细胞模式形成的一个简单且易于进行遗传分析的例子。两种表皮细胞类型，即根毛细胞和非根毛细胞的分布，是由位置信号和侧向抑制机制共同作用产生的。此外，最近的证据表明，强化机制被用于确保初始细胞命运选择以稳健的方式被采用。
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