生长素在拟南芥根尖干细胞中行驶两个相反的调控功能

Auxin Plays Two Opposite Regulatory Functions in Arabidopsis Root Meristem Stem Cells

生长素在拟南芥根尖干细胞调控中的作用是近年来植物学研究中的热点之一,受到了广泛的关注。现有实验证据表明生长素在拟南芥根尖干细胞调控中担负2个相反的功能,即既促进干细胞特性的维持,又促进干细胞的分化。生长素如何在同一细胞群中行驶这两个截然相反的调控功能的机理目前还不清楚。

The regulatory role of auxin in Arabidopsis root meristem stem cells has been a hot spot of plant science research and has attracted considerable interest. Current experimental evidence shows that auxin has two opposite regulatory functions in Arabidopsis root meristems, i.e. promoting the maintenance of stem cell properties and also promoting differentiation of some stem cells. The mechanisms by which auxin executes those two regulations in the same group of cells are currently unknown.