Trichomes as models for studying plant cell differentiation
Trichomes as models for studying plant cell differentiation
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DOI：
10.1007/s00018-012-1147-6
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发表时间：
2013-06
影响因子：
8
通讯作者：
Changxian Yang;Z. Ye
中科院分区：
文献类型：
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作者：
Changxian Yang;Z. Ye
毛状体起源于表皮细胞，几乎存在于所有陆生植物上。它们以不同的形式存在，容易获得，并作为一个很好的模型系统，用于分析植物细胞分化的分子机制，包括细胞命运的选择，细胞周期控制和细胞形态发生。在拟南芥中，已经确定了两种在毛状体形成中平行起作用的调控模型：激活子-抑制子模型和激活子-耗尽模型。棉花纤维是一种类似的单细胞结构，由一些功能同源的拟棉纤维基因控制。多细胞毛状体，如在烟草和番茄中，可以通过与单细胞毛状体不同的途径形成。最近的研究表明，细胞周期控制参与毛状体的形成。本文综述了单细胞和多细胞毛状体形成的分子机制，并讨论了细胞周期在其启动和形态发生中的整合作用。
Trichomes, originating from epidermal cells, are present on nearly all terrestrial plants. They exist in diverse forms, are readily accessible, and serve as an excellent model system for analyzing the molecular mechanisms in plant cell differentiation, including cell fate choices, cell cycle control, and cell morphogenesis. InArabidopsis, two regulatory models have been identified that function in parallel in trichome formation; the activator–inhibitor model and the activator–depletion model. Cotton fiber, a similar unicellular structure, is controlled by some functional homologues ofArabidopsistrichome-patterning genes. Multicellular trichomes, as in tobacco and tomato, may form through a distinct pathway from unicellular trichomes. Recent research has shown that cell cycle control participates in trichome formation. In this review, we summarize the molecular mechanisms involved in the formation of unicellular and multicellular trichomes, and discuss the integration of the cell cycle in its initiation and morphogenesis.