Molecular analysis of the SCARECROW gene in maize reveals a common basis for radial patterning in diverse meristems.

Published

Journal Article

Maize and Arabidopsis root apical meristems differ in several aspects of their radial organization and ontogeny. Despite the large evolutionary distance and differences in root radial patterning, analysis of the putative maize ortholog of the Arabidopsis patterning gene SCARECROW (SCR) revealed expression localized to the endodermis, which is similar to its expression in Arabidopsis. Expression in maize extends through the quiescent center, a population of mitotically inactive cells formerly thought to be undifferentiated and to lack radial pattern information. Zea mays SCARECROW (ZmSCR), the putative maize SCR ortholog, was used as a molecular marker to investigate radial patterning during regeneration of the root tip after either whole or partial excision. Analysis of the dynamic expression pattern of ZmSCR as well as other markers indicates the involvement of positional information as a primary determinant in regeneration of the root radial pattern.

Full Text

Duke Authors

Cited Authors

  • Lim, J; Helariutta, Y; Specht, CD; Jung, J; Sims, L; Bruce, WB; Diehn, S; Benfey, PN

Published Date

  • August 2000

Published In

Volume / Issue

  • 12 / 8

Start / End Page

  • 1307 - 1318

PubMed ID

  • 10948251

Pubmed Central ID

  • 10948251

Electronic International Standard Serial Number (EISSN)

  • 1532-298X

International Standard Serial Number (ISSN)

  • 1040-4651

Digital Object Identifier (DOI)

  • 10.1105/tpc.12.8.1307

Language

  • eng