title: As above, so below: Auxin's role in lateral organ development.
abstract: Organogenesis requires the coordination of many highly-regulated developmental processes, including cell fate determination, cell division and growth, and cell-cell communication. For tissue- and organ-scale coordination, a network of regulators enables molecular events in individual cells to translate into multicellular changes in structure and functional capacity. One recurrent theme in plant developmental networks is a central role for plant hormones, especially auxin. Here, we focus first on describing recent advances in understanding lateral root development, one of the best-studied examples of auxin-mediated organogenesis. We then use this framework to examine the parallel process of emergence of lateral organs in the shoot-a process called phyllotaxy. This comparison reveals a high degree of conservation, highlighting auxin's pivotal role determining overall plant architecture.
authors.affiliation: Department of Biology, University of Washington, Seattle, WA 98195, USA. Electronic address: mmtt@uw.edu.
authors.forename: Mallorie
authors.initials: M
authors.lastname: Taylor-Teeples
authors.affiliation: Department of Biology, University of Washington, Seattle, WA 98195, USA. Electronic address: alanctot@uw.edu.
authors.forename: Amy
authors.initials: A
authors.lastname: Lanctot
authors.affiliation: Department of Biology, University of Washington, Seattle, WA 98195, USA. Electronic address: jn7@uw.edu.
authors.forename: Jennifer L
authors.initials: JL
authors.lastname: Nemhauser
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000254:growth & development; D003583:Cytokinins / Q000502:physiology; D018507:Gene Expression Regulation, Developmental; D018506:Gene Expression Regulation, Plant; D007210:Indoleacetic Acids / Q000378:metabolism; D056626:Inflorescence / Q000254:growth & development; D008954:Models, Biological; D063245:Plant Development / Q000235:genetics / Q000502:physiology*; D018517:Plant Roots / Q000254:growth & development; D018520:Plant Shoots / Q000254:growth & development; D012639:Seeds / Q000254:growth & development; D055153:Stem Cell Niche
chemical_list: D003583:Cytokinins; D007210:Indoleacetic Acids
keywords: Hormone signaling; Root branching; Shoot architecture