Plant stem cell niches
Plant stem cell niches
复制标题
DOI：
10.1387/ijdb.041929ys
复制
发表时间：
2005-01-01
影响因子：
0.7
通讯作者：
Simon, R
中科院分区：
文献类型：
--
作者：
Stahl, Y;Simon, R
植物需要干细胞来维持其不确定的生长方式。分生组织是植物的干细胞小生境，其促进干细胞存活并产生注定要分化的后代。在茎分生组织中，干细胞的命运在群体水平上决定。分生组织顶端干细胞区域的大小取决于与下方组织中心细胞交换的信号。在根分生组织中，单个干细胞通过与位于紧邻的静止中心的细胞直接相互作用来控制。对干细胞小生境中的相互作用和信号传导过程的分析已经对所涉及的分子提供了一些见解，并揭示了植物干细胞的两个主要小生境比预期的更相似。
Stem cells are required to support the indeterminate growth style of plants. Meristems are a plant's stem cell niches that foster stem cell survival and the production of descendants destined for differentiation. In shoot meristems, stem cell fate is decided at the populational level. The size of the stem cell domain at the meristem tip depends on signals that are exchanged with cells of the organizing centre underneath. In root meristems, individual stem cells are controlled by direct interaction with cells of the quiescent centre that lie in the immediate neighbourhood. Analysis of the interactions and signaling processes in the stem cell niches has delivered some insights into the molecules that are involved and revealed that the two major niches for plant stem cells are more similar than anticipated.