Signal Crosstalk in the Control of Hypocotyl Elongation in Arabidopsis

  • Liesbeth De Grauwe
  • Filip Vandenbussche
  • Dominique Van Der Straeten
Chapter
First Online:
Part of the Plant Cell Monographs book series (CELLMONO, volume 6)

Abstract

Since plants are sessile organisms, environmental factors have a strong influence on their development. Hence, there is a need for adaptive mechanisms which integrate the multiple endogenous and environmental signals resulting in the most adequate biological response. Because of its morphological simplicity, the hypocotyl is often used as a model to study signal integration. Hypocotyl extension is a process regulated by a network of interacting signals, including light and hormones. Both are subject to reciprocal regulation, with hormonal factors influencing the biosynthesis and/or signalling of other hormones. In the following chapter, the current state of knowledge on the regulation of hypocotyl growth will be reviewed.

Keywords

Auxin Transport Hypocotyl Elongation DELLA Protein Hypocotyl Growth Signal Crosstalk 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations

ACC

1-Aminocyclopropane-1-carboxylic acid

ACO

ACC oxidase

AMP

Altered meristem program

ARF

Auxin response factor

ARR

Arabidopsis response regulator

BA

Benzyladenine

BAS1-D

phyB activation-tagged suppressor1-dominant

BR

Brassinosteroid

CAB

Chlorophyll A/B binding protein

CBB

Cabbage

CCA

Circadian clock-associated

CDD

cop10/det1/dbb1

COP

Constitutive photomorphogenesis

CPD

Constitutive photomorphogenesis and dwarfism

CRY

Cryptochrome

CSN

COP9-signalosome

DET

De-etiolated

EBR

Epibrassinolide

EIN

Ethylene insensitive

FUS

Fusca

GA

Gibberellin

GUS

β-Glucuronidase

HLS

Hookless

HPT

Hauptling

HSS

Hookless suppressor

HY

Long hypocotyl

IAA

Indol-3-acetic acid

LHY

Late elongated hypocotyl

LNM

Low-nutrient medium

LRE

Light-responsive element

MS

Murashige and Skoog

NPA

α-Naphthylphthalamic acid

NPH

Nonphototropic hypocotyl

PCK

Phosphoenolpyruvate carboxykinase

PHOT

Phototropin

PHY

Phytochrome

PIN

Pin-formed

PT

Primordial timing

SAX

Hypersensitive to abscisic acid and auxin

SCF

SKP1/Cullin/F-box

SPY

Spindly

TOC

Timing of CAB-expression

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Liesbeth De Grauwe
    • 1
  • Filip Vandenbussche
    • 1
  • Dominique Van Der Straeten
    • 1
  1. 1.Unit Plant Hormone Signalling and Bio-imaging, Department of Molecular GeneticsGhent UniversityGhentBelgium

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