Root development: signaling down and around.
Journal Article (Review;Journal Article)
Because of its elegant simplicity, the Arabidopsis root has become a model for studying plant organogenesis. In this review we focus on recent results indicating the importance of signaling in root development. A role for positional information in root cell specification has been demonstrated by ablation analyses. Through mutational analysis, genes have been identified that play a role in radial pattern formation. The embryonic phenotypes of these mutants raised the possibility that division patterns in post-embryonic roots are dependent on signaling that originates during embryonic development. Analysis of expression of the SCARECROW gene indicates that it may play a role in this 'top-down' signaling process. Characterization of root epidermis development has led to the identification of negative regulators of root-hair formation. These appear to set up a prepattern which is reinforced by signaling by plant hormones.
Full Text
Duke Authors
Cited Authors
- Wysocka-Diller, JW; Benfey, PN
Published Date
- November 1997
Published In
Volume / Issue
- 19 / 11
Start / End Page
- 959 - 965
PubMed ID
- 9394618
Electronic International Standard Serial Number (EISSN)
- 1521-1878
International Standard Serial Number (ISSN)
- 0265-9247
Digital Object Identifier (DOI)
- 10.1002/bies.950191105
Language
- eng