In multicellular organisms, not all cells are created equal. Instead, organismal complexity is achieved by specialisation and division of labour between distinct cell types. Therefore, the organism depends on the presence, correct proportion and function of all cell types. It follows that early development is geared towards setting up the basic body plan and to specify cell lineages. Since plants employ a post-embryonic mode of development, the continuous growth and addition of new organs require a source of new cells, as well as a strict regulation of cellular composition throughout the entire life-cycle. To meet these demands, evolution has brought about complex regulatory systems to maintain and control continuously active stem cell systems. Here, we review recent work on the mechanisms of non cell-autonomous control of shoot stem cells in the model plant Arabidopsis thaliana with a strong focus on the cell-to-cell mobility and function of the WUSCHEL homeodomain transcription factor.

中文翻译：

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争取最高目标：拟南芥中茎干细胞的非细胞自主控制。

在多细胞生物中，并非所有细胞都是平等的。取而代之的是，有机体复杂性是通过不同细胞类型之间的专业化和分工实现的。因此，生物体取决于所有细胞类型的存在，正确的比例和功能。因此，早期的开发旨在建立基本的身体计划并指定细胞谱系。由于植物采用胚后发育方式，因此新器官的持续生长和添加需要新细胞的来源，以及在整个生命周期中对细胞组成的严格调节。为了满足这些需求，进化带来了复杂的调节系统来维持和控制持续活跃的干细胞系统。这里，