title: Light signaling: back to space.
abstract: 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.
authors.affiliation: Departament de Genètica Molecular IBMB, Laboratori de Genètica Molecular Vegetal, Consorci CSIC-IRTA, c. Jordi Girona, 18-26, 08034 Barcelona, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Bou-Torrent
authors.forename: Irma
authors.initials: I
authors.lastname: Roig-Villanova
authors.forename: Jaime F
authors.initials: JF
authors.lastname: Martínez-García
mesh_terms: D018506:Gene Expression Regulation, Plant / Q000528:radiation effects*; D008027:Light; D008954:Models, Biological; D036226:Seedlings / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects