Shoot meristem maintenance is controlled by a GRAS-gene mediated signal from differentiating cells

  1. Jeroen Stuurman,
  2. Fabienne Jäggi, and
  3. Cris Kuhlemeier1
  1. Institute of Plant Sciences, University of Bern, Altenbergrain 21, CH-3013 Bern, Switzerland

Abstract

Plant shoot development depends on the perpetuation of a group of undifferentiated cells in the shoot apical meristem (SAM). In thePetunia mutant hairy meristem (ham), shoot meristems differentiate postembryonically as continuations of the subtending stem. HAM encodes a putative transcription factor of the GRAS family, which acts non-cell-autonomously from L3-derived tissue of lateral organ primordia and stem provasculature. HAM acts in parallel with TERMINATOR (PhWUSCHEL) and is required for continued cellular response to TERMINATOR andSHOOTMERISTEMLESS (PhSTM). This reveals a novel mechanism by which signals from differentiating tissues extrinsically control stem cell fate in the shoot apex.

Keywords

Footnotes

  • ↵1 Corresponding author.

  • E-MAIL cris.kuhlemeier{at}ips.unibe.ch; FAX 41-31-332-2059.

  • Article and publication are at http://www.genesdev.org/cgi/doi/10.1101/gad.230702.

    • Received March 11, 2002.
    • Accepted June 18, 2002.
| Table of Contents

This Article

  1. doi: 10.1101/gad.230702 Genes & Dev. 16: 2213-2218 Cold Spring Harbor Laboratory Press

Article Category

Share

Current Issue

  1. March 1, 2024, 38 (5-6)
  1. Current Issue
  1. Alert me to new issues of G&D

Life Science Alliance