The role of hormones in shoot apical meristem function

Curr Opin Plant Biol. 2006 Oct;9(5):484-9. doi: 10.1016/j.pbi.2006.07.008. Epub 2006 Jul 28.

Abstract

Plant organs are produced in meristems in a continuous and predictable but nevertheless flexible manner. Phytohormones and transcription factors cooperate to balance meristem maintenance and organ production. Recent research has provided clues to the mechanisms underlying this cooperation. KNOTTED1-like homeobox (KNOX) and WUSCHEL (WUS) transcription factors facilitate high cytokinin activity in the shoot apical meristem (SAM), whereas high gibberellin and auxin activities promote the initiation of lateral organs at specific sites in the SAM flanks.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Arabidopsis / growth & development
  • Arabidopsis / metabolism
  • Arabidopsis / physiology*
  • Arabidopsis Proteins / physiology
  • Cytokinins / metabolism
  • Cytokinins / physiology
  • Down-Regulation
  • Gibberellins / metabolism
  • Homeodomain Proteins / physiology
  • Indoleacetic Acids
  • Meristem / growth & development
  • Meristem / metabolism
  • Meristem / physiology*
  • Plant Growth Regulators / metabolism
  • Plant Growth Regulators / physiology*
  • Plant Leaves / growth & development
  • Plant Proteins / physiology

Substances

  • Arabidopsis Proteins
  • Cytokinins
  • Gibberellins
  • Homeodomain Proteins
  • Indoleacetic Acids
  • Kn1 protein, plant
  • Plant Growth Regulators
  • Plant Proteins
  • WUSCHEL protein, Arabidopsis