Ethylene is a positive regulator of root hair development in Arabidopsis thaliana.
Evidence is provided that ethylene is a positive regulator of hair cell development in the root epidermis of Arabidopsis thaliana. Treatment of seedlings with increasing concentrations of the ethylene precursor, 1-aminocyclopropane-1-carboxylic acid (ACC) results in progressively more root hair cells developing in positions normally occupied by non-hair cells. Consistent with these findings are observations that treatments that block either ethylene synthesis or its perception reduce the number of root hairs. A model is proposed in which either ethylene or ACC is a signal involved in specifying the pattern of cell differentiation in the Arabidopsis root epidermis.
Tanimoto
M
M
Department of Cell Biology, John Innes Centre, Colney, Norwich, UK.
Roberts
K
K
Dolan
L
L
D017360:Arabidopsis / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D003515:Cycloleucine / Q000031:analogs & derivatives* / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D005030:Ethylenes / Q000494:pharmacology*; D006706:Homeostasis; D018517:Plant Roots
D005030:Ethylenes; D003515:Cycloleucine; C036361:1-amino-1,3-dicarboxycyclopentane; C036216:ethylene