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Trends Plant Sci. 2008 Nov;13(11):596-601. doi: 10.1016/j.tplants.2008.08.007. Epub 2008 Sep 27.

Transposing phytochrome into the nucleus.

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  • 1Centre for Integrative Genomics, University of Lausanne, Genopode Building, Lausanne, Switzerland. christian.fankhauser@unil.ch

Abstract

To control many physiological responses, phytochromes directly modulate gene expression. A key regulatory event in this signal transduction pathway is the light-controlled translocation of the photoreceptor from the cytoplasm into the nucleus. Recent publications are beginning to shed light on the molecular mechanisms underlying this central control point. Interestingly, there is a specific mechanism for phytochrome A (phyA) nuclear accumulation. The dedicated phyA nuclear import pathway might be important for the distinct photosensory specificity of this atypical phytochrome. Recent studies in the field also provide a starting point for investigating how the different subcellular pools of phytochrome can control distinct responses to light.

PMID:
18824397
[PubMed - indexed for MEDLINE]
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