Happy end in sight after 70 years of controversy.
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.
Yamamoto
Kotaro T
KT
Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan. kty@ees.hokudai.ac.jp
D015374:Biosensing Techniques; D018522:Gravitropism; D007210:Indoleacetic Acids / Q000032:analysis / Q000502:physiology*; D018519:Meristem / Q000502:physiology*; D008954:Models, Biological; D063245:Plant Development
D007210:Indoleacetic Acids