stem cell nicheWOX5The presence of two meristematic cell populations in the root and shoot apex allows plants to grow indefinitely. Due to its simple and predictable tissue organization, the Arabidopsis root apical meristem remains an ideal model to study mechanisms such as stem cell specification,...
In the Arabidopsis root meristem, a pool of stem cells surrounding a stem cell organizer, named Quiescent Center (QC), gives rise to the specific root tissues. Among them, the columella stem cell niche that gives rise to the gravity-sensing columella cells has been used as a model system ...
Throughout the lifespan of a plant, which in some cases can last more than one thousand years, the stem cell niches in the root and shoot apical meristems provide cells for the formation of complete root and shoot systems, respectively. Both niches are superficially different and it has rema...
Cell (2008) L.Piet al. Organizer-Derived WOX5 Signal Maintains Root Columella Stem Cells through Chromatin-Mediated Repression ofCDF4Expression Dev. Cell (2015) C.Forzaniet al. WOX5 suppressesCYCLIN Dactivity to establish quiescence at the center of the root stem cell niche ...
A small organizing center, the quiescent center (QC), maintains stem cells in the Arabidopsis root and defines the stem cell niche. The phytohormone auxin influences the position of this niche by an unknown mechanism. Here, we identify the PLETHORA1 ( PLT1) and PLT2 genes encoding AP2 clas...
翻译:利用生长素和细胞分裂素建立拟南芥叶腋干细胞生态位。重点词汇释义 Stem Cell 干细胞 Niche 壁龛; 合适的位置; 有利可图的缺口，商机 in Leaf 生叶子的，叶茂盛的 Established 已建立的; 已设立的; 已制定的; 确定的; 确定; 建立( establish的过去式和过去分词); 使定植; 使成为 Auxin 茁长...
The root cap protects the stem cell niche of angiosperm roots from damage. In Arabidopsis, lateral root cap (LRC) cells covering the meristematic zone are regularly lost through programmed cell death, while the outermost layer of the root cap covering the tip is repeatedly sloughed. Efficient co...
Aida M, Beis D, Heidstra R, Willemsen V, Blilou I, Galinha C, Nussaume L, Noh Y-S, Amasino R, Scheres B (2004) The PLETHORA genes mediate patterning of the Arabidopsis root stem cell niche. Cell 119:109–120 CrossRef Galinha C, Hofhuis H, Luijten M, Willemsen V, Blilou I,...
In the root niche the quiescent centre cells, surrounded by the stem cells, express the homeobox gene WOX5 (WUSCHEL-RELATED HOMEOBOX 5), a homologue of the WUSCHEL (WUS) gene that non-cell-autonomously maintains stem cells in the shoot meristem. Loss of WOX5 function in the root meristem ...
We propose that RAX1 functions to positionally specify a stem cell niche for AM formation. RAX1 also affects the timing of developmental phase transitions by negatively regulating gibberellic acid levels in the shoot apex. RAX1 thus defines a novel activity that links the specification of AM ...