内胚层
皮质(解剖学)
拟南芥
拟南芥
生物
细胞生物学
背景(考古学)
植物根系
转录因子
大脑皮层
细胞内
植物
石碑
细胞
细胞分裂
神经科学
遗传学
基因
突变体
古生物学
作者
Shuang Wu,Chin-Mei Lee,Takuma Hayashi,Simara Price,Fanchon Divol,Sophia Henry,Germain Pauluzzi,Christophe Périn,Kimberly L. Gallagher
标识
DOI:10.1073/pnas.1407371111
摘要
Significance In nature, nearly all plants have only a single layer of endodermis. The number of cortex cell layers often varies between species and between roots on the same plant. Here we show that the expression of conserved SHORT-ROOT (SHR) protein, in the context of the root of Arabidopsis thaliana, is responsible for determining the number of cortex cell layers and that the number of cell layers is a function of the extent of SHR movement. These results provide a plausible model for regulating the number of cortex cell layers in plant roots that relies upon controlled intercellular movement of the SHR transcription factor.
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