Patterning the axis in plants-auxin in control
Patterning the axis in plants-auxin in control
复制标题
DOI：
10.1016/j.gde.2007.04.012
复制
发表时间：
2007-08-01
影响因子：
4
通讯作者：
Juergens, Gerd
中科院分区：
文献类型：
--
作者：
De Smet, Ive;Juergens, Gerd
轴的形成和模式化是建立多细胞生物体组织的基本过程。在植物中，图案化并不局限于胚胎发生，而是继续产生新的结构-侧部器官-沿着生长的初级体轴，并启动次级体轴。信号分子生长素已被确定为植物轴向模式的关键球员。轴的茎段和根段似乎以不同的方式产生侧生器官。然而，最近的研究结果表明，在干细胞系统边缘的“能力区”中生长素的局部积累引发了分支的一般机制。如何将一般的生长素信号转化为器官特异性发育程序仍然是未来的主要挑战。
Axis formation and patterning are fundamental processes establishing the body organization of multicellular organisms. In plants, patterning is not confined to embryogenesis but continues to produce new structures - lateral organs - along the growing primary body axis and also initiates secondary body axes. The signalling molecule auxin has been identified as a key player in plant axial patterning. The shoot and root sections of the axis seem to produce lateral organs in different ways. However, very recent findings suggest a general mechanism of branching triggered by local accumulation of auxin in a 'zone of competence' at the margin of stem-cell systems. How the general auxin signal is converted into organspecific developmental programs remains a major challenge for the future.