title: Happy end in sight after 70 years of controversy.
abstract: Differential auxin transport from the columella to lateral root cap cells as a result of root gravitropism has recently been shown using a GFP-based auxin biosensor. Together with the recent finding of gravity-dependent localization of an auxin efflux carrier, these results strongly support the Cholodny-Went hypothesis for the tropic response, which has been disputed for 70 years.
authors.affiliation: Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan. kty@ees.hokudai.ac.jp
authors.forename: Kotaro T
authors.initials: KT
authors.lastname: Yamamoto
mesh_terms: D015374:Biosensing Techniques; D018522:Gravitropism; D007210:Indoleacetic Acids / Q000032:analysis / Q000502:physiology*; D018519:Meristem / Q000502:physiology*; D008954:Models, Biological; D063245:Plant Development
chemical_list: D007210:Indoleacetic Acids