Root patterning: SHORT ROOT on the move
نویسنده
چکیده
The radial pattern of the plant root is determined by the action of two transcription factors, SHORT ROOT and SCARECROW, which are produced in different cell types. The SHORT ROOT protein has now been shown to move from cell to cell, regulating transcription of the downstream SCARECROW gene in the target cells.
منابع مشابه
SHORT - ROOT is a key regulator of root development
SHORT-ROOT (SHR) is a well characterised regulator of radial patterning and indeterminacy of the Arabidopsis primary root. However, its role during the elaboration of root system architecture (RSA) remains unclear. We report that the indeterminate wild-type Arabidopsis root system was transformed into a determinate root system in the short-root (shr) mutant when growing in soil or agar. The roo...
متن کاملGenome-wide direct target analysis reveals a role for SHORT-ROOT in root vascular patterning through cytokinin homeostasis.
SHORT-ROOT (SHR) is a key regulator of root growth and development in Arabidopsis (Arabidopsis thaliana). Made in the stele, the SHR protein moves into an adjacent cell layer, where it specifies endodermal cell fate; it is also essential for apical meristem maintenance, ground tissue patterning, vascular differentiation, and lateral root formation. Much has been learned about the mechanism by w...
متن کاملA broad competence to respond to SHORT ROOT revealed by tissue-specific ectopic expression.
In plants, cell fate specification depends primarily on position rather than lineage. Recent results indicate that positional information can be transmitted through intercellular trafficking of transcription factors. The SHORT ROOT (SHR) gene, a member of the GRAS family of putative transcription factors, is involved in root radial patterning in Arabidopsis. Correct radial patterning depends on...
متن کاملShort-Root regulates primary, lateral, and adventitious root development in Arabidopsis.
Short-Root (SHR) is a well-characterized regulator of radial patterning and indeterminacy of the Arabidopsis (Arabidopsis thaliana) primary root. However, its role during the elaboration of root system architecture remains unclear. We report that the indeterminate wild-type Arabidopsis root system was transformed into a determinate root system in the shr mutant when growing in soil or agar. The...
متن کاملIdentification of SHRUBBY, a SHORT-ROOT and SCARECROW interacting protein that controls root growth and radial patterning.
The timing and extent of cell division is particularly important for the growth and development of multicellular organisms. Roots of the model organism Arabidopsis thaliana have been widely studied as a paradigm for organ development in plants. In the Arabidopsis root, the plant-specific GRAS family transcription factors SHORT-ROOT (SHR) and SCARECROW (SCR) are key regulators of root growth and...
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عنوان ژورنال:
- Current Biology
دوره 11 شماره
صفحات -
تاریخ انتشار 2001