title: Inhibition of strigolactones promotes adventitious root formation.
abstract: Roots that form from non-root tissues (adventitious roots) are crucial for cutting propagation in the forestry and horticulture industries. Strigolactone has been demonstrated to be an important regulator of these roots in both Arabidopsis and pea using strigolactone deficient mutants and exogenous hormone applications. Strigolactones are produced from a carotenoid precursor which can be blocked using the widely available but broad terpenoid biosynthesis blocker, fluridone. We demonstrate here that fluridone can be used to promote adventitious rooting in the model species Pisum sativum (pea). In addition, in the garden species Plumbago auriculata and Jasminium polyanthum fluridone was equally as successful at promoting roots as a commercial rooting compound containing NAA and IBA. Our findings demonstrate that inhibition of strigolactone signaling has the potential to be used to improve adventitious rooting in commercially relevant species.
authors.affiliation: Department of Plant Production, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium. razda5@gmail.com
authors.forename: Amanda
authors.initials: A
authors.lastname: Rasmussen
authors.forename: Christine A
authors.initials: CA
authors.lastname: Beveridge
authors.forename: Danny
authors.initials: D
authors.lastname: Geelen
mesh_terms: D007783:Lactones / Q000037:antagonists & inhibitors* / Q000378:metabolism; D018532:Pisum sativum / Q000187:drug effects / Q000254:growth & development; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development*; D011728:Pyridones / Q000494:pharmacology
chemical_list: D007783:Lactones; D011728:Pyridones; C013351:fluridone