title: Plant tropisms: the ins and outs of auxin.
abstract: The Cholodny-Went hypothesis holds that gravitropic curvature of a growing plant organ depends on regulated transport of the plant hormone auxin; new studies of the agravitropic mutant aux1 of Arabidopsis provide strong evidence in support of this hypothesis.
authors.affiliation: Department of Biology, Indiana University, Bloomington 47405, USA.
authors.forename: M
authors.initials: M
authors.lastname: Estelle
mesh_terms: D017360:Arabidopsis / Q000378:metabolism; D029681:Arabidopsis Proteins; D018522:Gravitropism / Q000502:physiology*; D006133:Growth Substances; D007210:Indoleacetic Acids / Q000378:metabolism; D063245:Plant Development; D010937:Plant Growth Regulators / Q000235:genetics / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: C100794:AUX1 protein, Arabidopsis; C081977:AXR1 protein, Arabidopsis; D029681:Arabidopsis Proteins; D006133:Growth Substances; D007210:Indoleacetic Acids; D010937:Plant Growth Regulators; D010940:Plant Proteins