title: Evolutionary insights into photoregulation of the cell cycle in the green lineage.
abstract: Plant growth depends solely on light energy, which drives photosynthesis. Thus, linking growth control to light signals during certain developmental events, such as seed or spore germination and organ formation, is a crucial feature that plants evolved to use energy efficiently. How light controls the cell cycle depends on growth habitats, body plans (unicellular vs. multicellular), and photosensors. For example, the photosensors mediating light signaling to promote cell division appear to differ between green algae and land plants. In this review, we focus on cell-cycle regulation by light and discuss the transition of its molecular mechanisms during evolution. Recent advances show that light-dependent cell-cycle control involves global changes in transcription of cell-cycle genes, and is mediated by auxin and cytokinin.
authors: Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan.
authors: Ryuichi
authors: R
authors: Nishihama
authors: Takayuki
authors: T
authors: Kohchi
mesh_terms: D005075:Biological Evolution; D002453:Cell Cycle / Q000528:radiation effects; D000460:Chlorophyta / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D003583:Cytokinins / Q000378:metabolism; D019669:Embryophyta / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D018506:Gene Expression Regulation, Plant; D007210:Indoleacetic Acids / Q000378:metabolism; D008027:Light; D055519:Photoreceptors, Plant / Q000235:genetics / Q000378:metabolism; D063245:Plant Development; D010937:Plant Growth Regulators / Q000378:metabolism; D010944:Plants / Q000235:genetics / Q000528:radiation effects*; D015398:Signal Transduction
chemical_list: D003583:Cytokinins; D007210:Indoleacetic Acids; D055519:Photoreceptors, Plant; D010937:Plant Growth Regulators