Article

Light, phytochrome signalling and photomorphogenesis in Arabidopsis.

IFEVA, Faculty of Agronomy, University of Buenos Aires and National Research Council, Av. San Martín 4453, 1417 Buenos Aires, Argentina.
Photochemical and Photobiological Sciences (impact factor: 2.58). 07/2003; 2(6):625-36. pp.625-36
Source: PubMed

ABSTRACT The phytochromes is a family of plant photoreceptors that control growth and development in response to environmental cues. Red and far-red light are the most efficient wavebands to induce conformational changes of phytochromes and consequently modify their kinetics, nuclear/cytoplasmic partitioning, ability to phosphorylate substrates, and physical interaction with proteins that bind DNA. Many players in phytochrome signalling have been identified and a complex, highly regulated network is envisaged. Here we describe the connection between different features of the phytochrome signalling network and the versatile relationship between light signals and physiological outputs shown by phytochromes.

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Keywords

bind DNA
 
efficient wavebands
 
environmental cues
 
far-red light
 
induce conformational changes
 
light signals
 
nuclear/cytoplasmic partitioning
 
physical interaction
 
physiological outputs
 
phytochrome signalling
 
phytochrome signalling network
 
phytochromes
 
plant photoreceptors
 
players
 
versatile relationship