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


  • eng