title: Activation of phenylpropanoid pathway in legume plants exposed to heavy metals. Part II. Profiling of isoflavonoids and their glycoconjugates induced in roots of lupine (Lupinus luteus) seedlings treated with cadmium and lead.
abstract: We examined changes in profiles of isoflavonoids in roots of lupine (Lupinus luteus L. cv. Juno) seedlings in response to treatment with two heavy metals: cadmium (at 10 mg/l) and lead (at 150 mg/l). Overall, 21 flavonoid conjugates were identified in root extracts, some of them with up to six positional isomers. The total amount of all isoflavonoids increased by about 15 % in cadmium-treated plants and by 46 % in lead-treated ones. Heavy metals markedly increased the content of two compounds: 2'-hydroxygenistein glucoside and 2'-hydroxygenistein 7-O-glucoside malonylated. Possible functions of the identified isoflavonoids in yellow lupine exposed to heavy metal stress are discussed.
authors.affiliation: Department of Plant Ecophysiology, Institute of Experimental Biology, Faculty of Biology Adam Mickiewicz University, Poznań, Poland.
authors.forename: Sylwia
authors.initials: S
authors.lastname: Pawlak-Sprada
authors.forename: Maciej
authors.initials: M
authors.lastname: Stobiecki
authors.forename: Joanna
authors.initials: J
authors.lastname: Deckert
mesh_terms: D002104:Cadmium / Q000494:pharmacology*; D005960:Glucosides / Q000378:metabolism*; D007529:Isoflavones / Q000378:metabolism*; D007854:Lead / Q000494:pharmacology*; D008031:Lignin / Q000378:metabolism; D031297:Lupinus / Q000187:drug effects* / Q000378:metabolism / Q000502:physiology; D053858:Metabolic Networks and Pathways / Q000187:drug effects*; D018517:Plant Roots / Q000187:drug effects* / Q000378:metabolism; D036226:Seedlings / Q000187:drug effects* / Q000378:metabolism; D013312:Stress, Physiological
chemical_list: D005960:Glucosides; D007529:Isoflavones; D002104:Cadmium; D007854:Lead; D008031:Lignin