生长素对植物维管分化的信号诱导作用

Signal induction of auxins on vascular differentiation in plant

植物维管系统与植物生长发育关系密切,维管组织的分化机制也因此倍受关注。生长素可诱导植物维管组织分化,它根据自身浓度的高低产生系列信号,从而通过这些信号来控制其所在部位及其周围区域维管组织的分化状况。该文重点论述了生长素在细胞间的极性运输方式及其信号转导途径、生长素对维管组织分化的信号诱导作用及其表现特征,以及生长素诱导植物维管组织分化的分子机理。

Plant vascular system is very important to the growth and development of plant. Therefore, the differentiation mechanism of vascular tissue has been paid more attention to. It is considered that auxins can induce vascular differentiation. According to their concentrations, auxins produce some signals. And by these signals, the vascular differentiation can be committed in the position that auxins are located or in the district around. This article focus on the polar transport of auxins through cells and the signal transduction of auxins in this process, the signal induction on vascular differentiation of auxins and their representing characters, and the molecular mechanism of auxin signal induction on vascular differentiation in plant.