title: Brassinosteroid signaling and BRI1 dynamics went underground.
abstract: Brassinosteroids (BRs) are a group of steroid molecules perceived at the cell surface and that act as plant hormones. Since their discovery as crucial growth substances, BRs were mainly studied for their action in above ground organs and the BR signaling pathway was largely uncovered in the context of hypocotyl elongation. However, for the past two years, most of the exciting findings on BR signaling have been made using roots as a model. The Arabidopsis root is a system of choice for cell biology and allowed detailed characterization of BR perception at the cell membrane. In addition, a series of elegant articles dissected how BRs act in tissue specific manners to control root growth and development.
authors.affiliation: Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, F-69342 Lyon, France. Electronic address: yvon.jaillais@ens-lyon.fr.
authors.forename: Yvon
authors.initials: Y
authors.lastname: Jaillais
authors.affiliation: Institute for Integrative Biology of the Cell (I2BC), CNRS/CEA/Univ. Paris Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette, France. Electronic address: Gregory.Vert@i2bc.paris-saclay.fr.
authors.forename: Grégory
authors.initials: G
authors.lastname: Vert
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000254:growth & development / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000235:genetics* / Q000378:metabolism; D060406:Brassinosteroids / Q000378:metabolism*; D018519:Meristem / Q000235:genetics / Q000254:growth & development / Q000502:physiology; D010937:Plant Growth Regulators / Q000378:metabolism*; D018517:Plant Roots / Q000235:genetics / Q000254:growth & development / Q000502:physiology*; D011494:Protein Kinases / Q000235:genetics* / Q000378:metabolism; D015398:Signal Transduction
chemical_list: D029681:Arabidopsis Proteins; D060406:Brassinosteroids; D010937:Plant Growth Regulators; D011494:Protein Kinases; C108270:BRI1 protein, Arabidopsis