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Trends Plant Sci. 2008 Mar;13(3):108-14. doi: 10.1016/j.tplants.2007.12.003. Epub 2008 Feb 14.

Light signaling: back to space.

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Departament de Genètica Molecular IBMB, Laboratori de Genètica Molecular Vegetal, Consorci CSIC-IRTA, c. Jordi Girona, 18-26, 08034 Barcelona, Spain.


Recent work has increased our understanding of the molecular and cellular mechanisms of the phytochrome family of photoreceptors in controlling plant photomorphogenesis. However, the importance of long-distance communication in controlling light responses has received relatively little attention and is poorly understood. In this article, by taking a closer look at old and new experiments that extend the analysis of light signaling beyond the limits of the plant cell, we offer to look at the field in a new light. Furthermore, we discuss how intercellular and inter-organ communication might integrate with the transcriptional networks controlling light-regulated responses in plants, a novel view that might help to re-assess the parameters by which we screen for photomorphogenic mutants in the future.

[Indexed for MEDLINE]

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