title: Let there be light in the nucleus!
abstract: Ambient light conditions trigger both developmental transitions, such as the induction of flowering, and a suite of adaptive responses, exemplified by the shade-avoidance syndrome. These responses are initiated by three families of photoreceptors that are conserved in all higher plants: the phototropins, cryptochromes and phytochromes (phyA--phyE, cry1--cry3, phot1 and phot2 in Arabidopsis). Molecular genetic studies performed mainly in Arabidopsis indicate that photon capture by these light sensors usually initiates rapid changes in the gene expression profile, leading to plant adaptation to their environment. Interestingly, numerous transcription factors are early targets of light regulation, both at the transcriptional and post-transcriptional levels.
authors.affiliation: Centre for Integrative Genomics, University of Lausanne, Genopode Building, CH-1015 Lausanne, Switzerland.
authors.forename: Séverine
authors.initials: S
authors.lastname: Lorrain
authors.forename: Thierry
authors.initials: T
authors.lastname: Genoud
authors.forename: Christian
authors.initials: C
authors.lastname: Fankhauser
mesh_terms: D017360:Arabidopsis / Q000254:growth & development / Q000528:radiation effects*; D002467:Cell Nucleus / Q000502:physiology*; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant / Q000528:radiation effects; D008027:Light; D020411:Oligonucleotide Array Sequence Analysis; D018524:Phototropism / Q000502:physiology; D010834:Phytochrome / Q000378:metabolism; D036226:Seedlings / Q000254:growth & development / Q000528:radiation effects*
chemical_list: D010834:Phytochrome