title: Roles for farnesol and ABA in Arabidopsis flower development.
abstract: The Arabidopsis FOLK (At5g58560) gene encodes farnesol kinase, which phosphorylates farnesol to farnesyl phosphate. Loss-of-function mutations in the FOLK gene are associated with enhanced sensitivity to abscisic acid (ABA), suggesting that FOLK negatively regulates ABA signaling. Moreover, folk flowers develop supernumerary carpels under water stress, providing evidence for a molecular link between farnesol metabolism, abiotic stress signaling and flower development. Here, we show that farnesol increases ABA sensitivity and that ABA affects flower development in Arabidopsis.
authors.affiliation: Department of Biological Sciences, Idaho State University, Pocatello, ID, USA.
authors.forename: A Heather
authors.initials: AH
authors.lastname: Fitzpatrick
authors.forename: Nisha
authors.initials: N
authors.lastname: Shrestha
authors.forename: Jayaram
authors.initials: J
authors.lastname: Bhandari
authors.forename: Dring N
authors.initials: DN
authors.lastname: Crowell
mesh_terms: D000040:Abscisic Acid / Q000502:physiology*; D017360:Arabidopsis / Q000201:enzymology / Q000235:genetics / Q000254:growth & development*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D005204:Farnesol / Q000378:metabolism*; D035264:Flowers / Q000254:growth & development*; D018506:Gene Expression Regulation, Plant; D017853:Phosphotransferases (Alcohol Group Acceptor) / Q000235:genetics / Q000378:metabolism
chemical_list: D029681:Arabidopsis Proteins; D005204:Farnesol; D000040:Abscisic Acid; D017853:Phosphotransferases (Alcohol Group Acceptor); C112478:farnesol kinase