title: Strigolactones' ability to regulate root development may be executed by induction of the ethylene pathway.
abstract: The newly defined phytohormones strigolactones (SLs) were recently shown to act as regulators of root development. Their positive effect on root-hair (RH) elongation enabled examination of their cross talk with auxin and ethylene. Analysis of wild-type plants and hormone-signaling mutants combined with hormonal treatments suggested that SLs and ethylene regulate RH elongation via a common regulatory pathway, in which ethylene is epistatic to SLs. The SL and auxin hormonal pathways were suggested to converge for regulation of RH elongation; this convergence was suggested to be mediated via the ethylene pathway, and to include regulation of auxin transport.
authors.affiliation: Plant Sciences Institute, Agricultural Research Organization, Bet Dagan, Israel. hkoltai@agri.gov.il
authors.forename: Hinanit
authors.initials: H
authors.lastname: Koltai
mesh_terms: D017360:Arabidopsis / Q000187:drug effects* / Q000254:growth & development* / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000378:metabolism; D005030:Ethylenes / Q000378:metabolism*; D007210:Indoleacetic Acids / Q000378:metabolism; D007783:Lactones / Q000494:pharmacology*; D010937:Plant Growth Regulators / Q000494:pharmacology*; D018517:Plant Roots / Q000187:drug effects* / Q000254:growth & development* / Q000378:metabolism; D015398:Signal Transduction / Q000187:drug effects
chemical_list: D029681:Arabidopsis Proteins; D005030:Ethylenes; D007210:Indoleacetic Acids; D007783:Lactones; D010937:Plant Growth Regulators; C036216:ethylene