Fuchs I, Philippar K, Hedrich R
Julius-von-Sachs-Institute, Molecular Plant Physiology and Biophysics, Biocenter Würzburg University, Julius-von-Sachs-Platz 2, 97082 Würzburg, Germany.
Plant Biol (Stuttg). 2006 May;8(3):353-9. doi: 10.1055/s-2006-924121.
The regulation of cell division and elongation in plants is accomplished by the action of different phytohormones. Auxin as one of these growth regulators is known to stimulate cell elongation growth in the aerial parts of the plant. Here, auxin enhances cell enlargement by increasing the extensibility of the cell wall and by facilitating the uptake of osmolytes such as potassium ions into the cell. Starting in the late 1990s, the auxin regulation of ion channels mediating K+ import into the cell has been studied in great detail. In this article we will focus on the molecular mechanisms underlying the modulation of K+ transport by auxin and present a model to explain how the regulation of K+ channels is involved in auxin-induced cell elongation growth.
植物中细胞分裂和伸长的调节是通过不同植物激素的作用来完成的。生长素作为这些生长调节因子之一，已知可刺激植物地上部分的细胞伸长生长。在这里，生长素通过增加细胞壁的伸展性以及促进诸如钾离子等渗透溶质进入细胞来增强细胞增大。从20世纪90年代末开始，介导钾离子进入细胞的离子通道的生长素调节已得到详细研究。在本文中，我们将重点关注生长素调节钾离子运输的分子机制，并提出一个模型来解释钾离子通道的调节如何参与生长素诱导的细胞伸长生长。
