Positional information in root epidermis is defined during embryogenesis and acts in domains with strict boundaries
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منابع مشابه
Positional information in root epidermis is defined during embryogenesis and acts in domains with strict boundaries
BACKGROUND Cell position rather than cell lineage governs most aspects of development in plants. However, the nature and the origin of positional information remains elusive. Animal epidermal patterning relies in many cases on positional information provided by cell-cell communication. The epidermal layer of the Arabidopsis root is made of alternating files of two cell types and thus presents a...
متن کاملPositional information and mobile transcriptional regulators determine cell pattern in the Arabidopsis root epidermis.
The root epidermis is a model system for deciphering the mechanism underpinning the formation of cellular pattern in planar groups of cells. The epidermis comprises rows of hair cells (H) and non-hair-bearing epidermal cells (N). Laser ablation and clonal analysis have shown that the fates of epidermal cells are flexible through development and that positional information which may be located i...
متن کاملThe Transfer of Left-Right Positional Information during Chick Embryogenesis
The earliest known left-right asymmetric genes are expressed at Hensen's node during chick gastrulation. Gene expression following reorientation of the node shows asymmetry is instructed by adjacent tissue, hence left-right information originates outside the node. Subsequently, the node signals back to the lateral tissue, initiating a cascade leading to left-sided expression of nodal in the lat...
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ژورنال
عنوان ژورنال: Current Biology
سال: 1998
ISSN: 0960-9822
DOI: 10.1016/s0960-9822(98)70176-9