Integration of plant responses to environmentally activated phytohormonal signals.
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.
Achard
Patrick
P
John Innes Centre, Norwich NR4 7UJ, UK.
Cheng
Hui
H
De Grauwe
Liesbeth
L
Decat
Jan
J
Schoutteten
Hermien
H
Moritz
Thomas
T
Van Der Straeten
Dominique
D
Peng
Jinrong
J
Harberd
Nicholas P
NP
D000040:Abscisic Acid / Q000378:metabolism / Q000494:pharmacology; D017360:Arabidopsis / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D004268:DNA-Binding Proteins; D005030:Ethylenes / Q000378:metabolism; D035264:Flowers / Q000254:growth & development; D017343:Genes, Plant; D005875:Gibberellins / Q000378:metabolism / Q000494:pharmacology; D009154:Mutation; D009687:Nuclear Proteins / Q000378:metabolism; D010937:Plant Growth Regulators / Q000378:metabolism* / Q000494:pharmacology; D010940:Plant Proteins / Q000235:genetics / Q000502:physiology; D018517:Plant Roots / Q000254:growth & development; D015398:Signal Transduction; D012965:Sodium Chloride / Q000494:pharmacology*; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism / Q000502:physiology; D014158:Transcription, Genetic
D029681:Arabidopsis Proteins; D004268:DNA-Binding Proteins; C106987:EIN3 protein, Arabidopsis; D005030:Ethylenes; C109555:GAI protein, Arabidopsis; D005875:Gibberellins; D009687:Nuclear Proteins; D010937:Plant Growth Regulators; D010940:Plant Proteins; C450824:RGL1 protein, Arabidopsis; C450823:RGL2 protein, Arabidopsis; D014157:Transcription Factors; D012965:Sodium Chloride; D000040:Abscisic Acid; C036216:ethylene