Integration of plant responses to environmentally activated phytohormonal signals

Science. 2006 Jan 6;311(5757):91-4. doi: 10.1126/science.1118642.

Abstract

Plants live in fixed locations and survive adversity by integrating growth responses to diverse environmental signals. Here, we show that the nuclear-localized growth-repressing DELLA proteins of Arabidopsis integrate responses to independent hormonal and environmental signals of adverse conditions. The growth restraint conferred by DELLA proteins is beneficial and promotes survival. We propose that DELLAs permit flexible and appropriate modulation of plant growth in response to changes in natural environments.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abscisic Acid / metabolism
  • Abscisic Acid / pharmacology
  • Arabidopsis / genetics
  • Arabidopsis / growth & development*
  • Arabidopsis / metabolism
  • Arabidopsis Proteins / genetics
  • Arabidopsis Proteins / metabolism
  • Arabidopsis Proteins / physiology*
  • DNA-Binding Proteins
  • Ethylenes / metabolism
  • Flowers / growth & development
  • Genes, Plant
  • Gibberellins / metabolism
  • Gibberellins / pharmacology
  • Mutation
  • Nuclear Proteins / metabolism
  • Plant Growth Regulators / metabolism*
  • Plant Growth Regulators / pharmacology
  • Plant Proteins / genetics
  • Plant Proteins / physiology
  • Plant Roots / growth & development
  • Signal Transduction*
  • Sodium Chloride / pharmacology*
  • Transcription Factors / genetics
  • Transcription Factors / metabolism
  • Transcription Factors / physiology
  • Transcription, Genetic

Substances

  • Arabidopsis Proteins
  • DNA-Binding Proteins
  • EIN3 protein, Arabidopsis
  • Ethylenes
  • GAI protein, Arabidopsis
  • Gibberellins
  • Nuclear Proteins
  • Plant Growth Regulators
  • Plant Proteins
  • RGL1 protein, Arabidopsis
  • RGL2 protein, Arabidopsis
  • Transcription Factors
  • Sodium Chloride
  • Abscisic Acid
  • ethylene